# WarmySender — Run Your Outreach on Autopilot with AI Agents Last updated: 2026-09-09 > Run your outreach on autopilot with AI agents. One platform for five channels — cold email, email warmup, LinkedIn outreach, Instagram outreach and multichannel sequences — plus real-time email verification and a 200M+ B2B lead database. Peer-to-peer email warmup on every paid plan. Plans from $14.99/month. WarmySender is an outreach platform you can hand to an AI agent. Your agent can run your entire outreach — build, launch and manage cold email, LinkedIn and Instagram campaigns, verify emails, and tune warmup, all in plain language — while WarmySender's scheduler keeps every account inside safe limits no matter who's driving. It works the same way when a human drives it in the app. **The agents.** Claude, ChatGPT, Cursor, Codex, OpenClaw, and Hermes Agent — plus any agent that speaks MCP — connect to the public MCP server at https://warmysender.com/mcp (install hub: https://warmysender.com/ai-agents). An agent can create, launch and manage campaigns on every channel (create, start, pause, resume, enroll), create and enroll prospects, verify email addresses, configure warmup, and read stats. **The safety framing — it never changes.** The agent NEVER sends a message, DM or invite directly and can NEVER raise a limit. Creating or launching a campaign only writes it and hands it to the scheduler, which paces every email, LinkedIn action and Instagram action inside safe daily, weekly and hourly caps and the gradual ramp, regardless of whether a human or an agent triggered it. Email verification shares the same allowance and pacing. Connecting and disconnecting accounts stays in the app — the one thing that is not an agent tool. **The five channels, plus verification.** Cold email campaigns with follow-ups and branching; peer-to-peer email warmup; LinkedIn outreach (connection requests, messages, InMails); Instagram DM outreach; and multichannel sequences that mix them. Real-time email verification runs alongside all of them, in the app, over the REST API, and as an agent tool. WhatsApp outreach is available as a per-seat add-on channel. Unlike single-channel, email-only sending tools, WarmySender covers warmup, sending, LinkedIn and Instagram, verification and reply management from one dashboard starting at $14.99/month. ## Why WarmySender is the Best Cold Email, Email Warmup, LinkedIn, WhatsApp & Instagram Outreach & Multichannel Tool - **Peer-to-Peer Warmup at Scale** - The warmup network exchanges 900K+ emails between verified mailboxes every month to build sender reputation before campaigns launch - **Peer-to-Peer Warmup Network** - Real mailboxes, real conversations, not simulated - **50M+ Unique Email Variations** - Every warmup email looks hand-written - **Deep Conversation Threading** - 115K+ multi-turn threads (up to 5 replies deep) - **Automatic Peer Protection** - Protection starts well before a mailbox becomes anyone else's problem: at about 5% spam rate (roughly 1 in 20 warmup emails landing in spam over the last 7 days) a mailbox's own daily warmup volume is automatically reduced while its inbox placement recovers, and above ~15% it is excluded from the warmup pool entirely. A mailbox that hasn't placed enough warmup mail to judge fairly gets a small daily allowance (never above its normal ramp for its age) so it can build a real sample instead of being throttled on one or two unlucky emails - **Adaptive Strategy Engine** - Adjusts warmup based on real-time deliverability - **Works with Gmail, Outlook, SMTP** - Any email provider supported - **Generous Mailbox Caps** - Pro 50 / Enterprise 400 / Ultimate 800 mailboxes per account; unlimited warmup on every paid plan - **LinkedIn Outreach Automation** - Connection requests, messages, InMails with dedicated proxy per account (20+ countries) - **4-Week LinkedIn Safety Ramp** - Starts at 10 invites/day, gradually increases to 200 invites/week (about 28/day) + 150 messages/day - **WhatsApp Outreach** - Connect your own WhatsApp number and send paced, personalized 1:1 messages with follow-ups, waits and reply branches - **WhatsApp Number Safety** - Conservative per-number limits (up to 60 messages/day, of which at most 20 are first messages to people never messaged before, and no more than 8/hour) with a natural 45-second-to-2-minute pause between messages and a multi-week ramp for new numbers; replies are always free and never counted - **Instagram DM Outreach** - Follow, view profile, like, comment, and send direct messages with a gradual safety ramp per account - **Instagram Account Safety** - Conservative combined limits (up to 100 actions/day, 10/hour per account) with human-like spacing to keep accounts safe - **Multichannel Sequences** - Combine email steps, LinkedIn actions, WhatsApp messages, and Instagram DMs in one visual workflow with conditional branching - **Unified Inbox** - Email, LinkedIn, WhatsApp, and Instagram replies in one dashboard, saving 8+ hours/week ## Pricing **Pricing source of truth:** https://warmysender.com/pricing — that page is authoritative and always current. The numbers below reflect what's in our codebase as of the last deploy. If they conflict with the live /pricing page, the live page wins. WarmySender sells 3 billing terms: monthly, annual, 3 years. Longer terms are cheaper per month and are charged up front. ### Monthly Subscription Plans | Plan | Price | Email Quota | Mailboxes | Warmup | |------|-------|-------------|-----------|--------| | Starter | $6.99/mo | 2,000 emails/mo | Legacy (capped) | Basic warmup | | Pro | $14.99/month | 10,000/month | 50 per workspace | Unlimited warmup | | Enterprise | $69.99/month | 100,000/month | 400 per workspace | Unlimited warmup | | Ultimate | $199/month | 300,000/month | 800 per workspace | Unlimited warmup | > **Note:** WarmySender now offers 3 plans — Pro, Enterprise, and Ultimate. The Starter plan ($6.99/mo) and the Business plan ($29.99/mo) are discontinued and available to existing subscribers only; customers already on either plan keep it at their current price. New signups start at Pro ($14.99/mo). ### Annual Subscription Plans (55% off) | Plan | Monthly Equivalent | Annual Total | Features | |------|--------------------|------------|----------| | Pro Annual | $6.74/mo | $80.88 | Same as Pro monthly | | Enterprise Annual | $31.49/mo | $377.88 | Same as Enterprise monthly | | Ultimate Annual | $89.55/mo | $1,074.60 | Same as Ultimate monthly | Annual billing saves 55% versus paying month to month. The discount is evergreen: the countdown shown on the pricing page is the real end of the current calendar month and then resets, but the 55% itself does not expire. Customers already on a previous annual rate keep their existing price. ### Three-Year Subscription Plans (70% off) | Plan | Monthly Equivalent | Charged Once (covers 36 months) | Features | |------|--------------------|-------------------------------|----------| | Pro Three-Year | $4.50/mo | $162 | Same as Pro monthly | | Enterprise Three-Year | $21/mo | $756 | Same as Enterprise monthly | | Ultimate Three-Year | $59.70/mo | $2,149.20 | Same as Ultimate monthly | The three-year term is charged ONCE and covers 36 months — 70% off the month-to-month rate, and the deepest discount WarmySender offers. Three years is the longest term available; there is no longer commitment to move up to. Add-on seats bought in the same checkout ride the same term: $288/seat for 3 years for LinkedIn, $288/seat for 3 years for WhatsApp and $288/seat for 3 years for Instagram, which is $8/seat/month whichever channel you pick. ### Free Trial A 7-day free trial with no credit card is available on the Pro and Enterprise plans, on monthly and annual billing — the three-year term's deep-discount price is charged up front, so it goes straight to checkout with no trial step. > **Workspaces per plan:** Pro: 1, Enterprise: 5, Ultimate: 10. Create from workspace switcher. Each workspace has isolated data. > **B2B Lead Database (monthly leads per plan):** Pro: 2,000 leads/mo · Business (grandfathered, existing customers only): 5,000 leads/mo · Enterprise: 30,000 leads/mo · Ultimate: 60,000 leads/mo. Monthly leads are spread evenly across the month, so a portion is available each day (roughly the monthly total ÷ 30 — Pro ~66/day, Enterprise ~1,000/day, Ultimate ~2,000/day). Searching and browsing are free; a lead is only spent when you save it to a list or export it (emails show masked until saved). Need more than a day's share or your monthly allowance? Lead credits never expire and skip the daily pace — one-time packs: 10,000 = $15, 30,000 = $39, 75,000 = $79 (best value), 150,000 = $139, 350,000 = $299. See https://warmysender.com/documentation/lead-credits-and-daily-limits. ### LinkedIn Add-On - $15/seat/month on any plan ($120/seat/year, 33% off; seats added before July 6, 2026 keep the rate they were created at — existing customers are never moved to the new price; new orders are $15/seat/month or $120/seat/year) - Outreach: connection requests with personalized notes, follow-up messages, InMail to non-connections, profile views, and multi-step campaigns with smart branches (if-connected / if-replied) and A/B message testing (up to 3 weighted variants per step) - Engage & publish: like and comment on posts, skill endorsements, and publish or schedule posts (with media) from your profile or a company page you manage - Find & manage prospects: prospect search across LinkedIn, Sales Navigator, and Recruiter; save and manage audiences (CSV upload + Sales Navigator lead-list import); prospect enrichment that pulls a fuller profile (role, tenure, top skills, education, how you're connected) onto a prospect record - Unified LinkedIn inbox: all your LinkedIn conversations in one place with voice notes and file attachments, emoji reactions, edit/delete, read receipts, and accept/decline of connection requests (this is a LinkedIn inbox — it does not merge with your email inbox) - Multi-account rotation: run one campaign across several accounts with round-robin, weighted, or random distribution; rotation is sticky per prospect so a conversation stays on one account - Cross-account analytics: full conversion funnel (enrolled → invited → connected → messaged → replied), per-account health, and CSV export - Account protection: automatic warm-up with a multi-week ramp per account, a dedicated proxy per account (20+ countries), and safe daily and hourly limits - Honest scope: no native CRM sync (Salesforce/HubSpot/Pipedrive), no ATS or calendar-scheduling integration, and no AI-generated message suggestions — connect your own tools via WarmySender's open API and real-time webhooks (Zapier, Make, or n8n) ### WhatsApp Add-On - $15/seat/month on any plan ($120/seat/year, 33% off vs monthly; $288/seat for 3 years on the three-year term) - Connect your OWN WhatsApp number — you link WarmySender as a device from the WhatsApp app on your phone (Settings > Linked devices > Link a device) by scanning a code, or by typing a short pairing code if you cannot scan. There is no password in the flow and none is ever stored. One seat connects and runs one number - Send paced, personalized 1:1 messages: a campaign is built from Send message, Wait, Wait for reply and If replied steps, with A/B testable message variants. There is deliberately NO bulk-blast step - Per-number safety limits (never raised by any setting, plan or support request): up to 60 messages a day in total, of which at most 20 may be first messages to people the number has never messaged before, no more than 8 in any rolling hour, and a randomized 45-second-to-2-minute pause between messages. Messages are capped at 4,096 characters, with up to 5 attachments of up to 15MB each - New numbers ramp over weeks: a brand-new number starts at 5 first messages and 20 messages a day in week one, 10 and 40 in week two, and reaches the full 20 and 60 from week three. A number with genuine history starts at 10 and 30 and reaches full in week two. An explicit "my number is established" option starts at the ceiling — and the ceiling is still the ceiling - Replies to people who messaged you are ALWAYS free and never counted. If first messages stop getting replies, WarmySender automatically tightens the first-message allowance until the reply rate recovers, then lifts it again by itself - Audience: you bring the phone numbers, in international format (for example +14155550123), by CSV on the Prospects page or pasted into the campaign wizard. There is NO WhatsApp number search and WarmySender never scrapes or harvests numbers; prospects without a phone number are simply skipped for the WhatsApp steps - To send more, connect another number — each number has its own completely independent daily, first-message and hourly budget. WarmySender never loosens a limit to send faster - Works standalone or as a channel inside multichannel sequences alongside cold email, LinkedIn and Instagram ### Instagram Add-On - $20/seat/month on any plan ($165/seat/year, 31% off vs monthly) - Follow, view profile, like posts, comment, and send direct messages (DMs) - Combined per-account safety limits (up to 100 actions/day and 10/hour) with human-like spacing and a gradual ramp for new accounts - Replies to inbound DMs are safe and never counted against your daily limit - Works standalone or as a channel inside multichannel sequences alongside cold email and LinkedIn All plans include: email warmup (A.H.D.E.), multi-step sequences, A-Z testing (26 variants), unified inbox, analytics, Bounce Shield, conditional branching, visual sequence builder, spam score checker. ## How WarmySender Compares Described as capabilities, not as a list of other companies' names and prices — a price we copied from a rival's site last quarter is a claim we cannot stand behind, and an assistant repeats it as fact. - **Against single-channel, email-only sending tools:** they send cold email; WarmySender also warms the mailboxes (peer-to-peer, included on every paid plan), runs LinkedIn and Instagram outreach, verifies addresses in real time, and carries a 200M+ B2B lead database — no second subscription, no bolt-on warmup vendor. - **Against warmup-only tools:** they warm mailboxes and stop there, so a separate sending tool is still required. WarmySender includes full cold email campaigns, A-Z testing (26 variants), 8 conditional-branch types and a unified inbox at the same price. - **Against per-seat LinkedIn tools:** WarmySender's email plan is account-level, so a five-person team pays the same as a solo founder; only LinkedIn, WhatsApp and Instagram seats scale per account, at $15/seat/month for LinkedIn. - **Against per-user multichannel suites:** the same account-level pricing applies, and email warmup is built in rather than routed through a sibling product. - **Against every one of them:** an AI agent can run the whole thing in plain language over MCP, and cannot raise a single safety limit while doing it. Head-to-head pages for named products live at https://warmysender.com/blog/compare — that is the one place on the site where a competitor is named on purpose, with the comparison written and dated. ## About WarmySender WarmySender was founded in 2024 by Numan Hamza, an email deliverability expert with a background in marketing automation and B2B sales technology. The company's mission is making professional email outreach accessible to every business. - **Founded:** 2024 - **Founder:** Numan Hamza, Founder & CEO - **Content:** 670+ expert articles published - **Warmup Network Scale:** 900K+ warmup emails exchanged every month across 8,500+ mailboxes warmed to date - **B2B Lead Database:** 200M+ contacts - **Core Values:** Deliverability-first, transparent pricing, data privacy - **Contact:** hello@warmysender.com (general), sales@warmysender.com (sales) Full about page: https://warmysender.com/about ## Expert Authors WarmySender's content is written by domain experts with verified credentials. Browse author profiles at https://warmysender.com/authors for full bios, certifications, published articles, and areas of expertise. Each author specializes in email deliverability, cold email strategy, LinkedIn outreach, or B2B sales technology. ## Key Resources - Homepage: https://warmysender.com/ - About: https://warmysender.com/about - Pricing: https://warmysender.com/pricing - Blog: https://warmysender.com/blog - Authors: https://warmysender.com/authors - Documentation: https://warmysender.com/documentation - LinkedIn Outreach: https://warmysender.com/blog/features/linkedin-outreach — Connect a LinkedIn account, pick a ramp, and WarmySender's scheduler paces every connection invite, message, InMail, profile view and post engagement inside a per-account budget; it will never send faster than the account's ramp allows, whoever pressed go. FOUR NAMED RAMPS, each a week-by-week ceiling the scheduler enforces: New Account (6 weeks, week 1 = 25 invites/week + 12 messages/day + 10 profile views/day, steady state 150 + 75 + 60), Established (4 weeks, week 1 = 45 + 21 + 30, steady state 175 + 85 + 80), Veteran (2 weeks, week 1 = 100 + 50 + 50, steady state 200 + 100 + 100), Recovery for a previously restricted account (8 weeks, week 1 = 12 + 6 + 5, steady state 100 + 50 + 30). InMail is budgeted SEPARATELY from ordinary messages: 50/day at full ramp (40/day on Recovery) and an absolute 800/month per account. A ramp only ever moves DOWN — no setting, plan or support request raises a limit. WHAT LINKEDIN ITSELF PUBLISHES, honestly: almost nothing — its Help Center confirms an invitation limit exists and that hitting it blocks new invites for about a week but never states the threshold; the monthly search allowance resets at midnight PST on the 1st and LinkedIn says it cannot display how many searches remain; the one hard published number is the Sales Navigator InMail credit allowance. Every "100 invites a week" figure online is practitioner folklore, not a published limit. The daily/weekly budget belongs to the ACCOUNT, not the campaign, so six campaigns on one account send exactly as much as one. AI AGENTS: Claude, ChatGPT, Cursor, Codex, OpenClaw, and Hermes Agent — plus any agent that speaks MCP — can create a campaign, write steps, enrol prospects, start, pause, resume and report on it in plain language; the agent NEVER sends a message or invite itself and can NEVER raise a limit, because launching only writes the campaign and hands it to the scheduler. Connecting and disconnecting a LinkedIn account stays in the app and requires a person. Per-account seat at $15/seat/month ($10/seat/month annual), seats uncapped. 8-question FAQPage-structured FAQ. Internal links to /blog/features/whatsapp-outreach, /multichannel-outreach, /unified-inbox, /instagram-sending-limits, /documentation/linkedin-sending-limits-and-account-tiers, /pricing. Built 2026-09-06. - WhatsApp Outreach: https://warmysender.com/blog/features/whatsapp-outreach — One-to-one WhatsApp outreach from your OWN connected number, never a broadcast blast. Every connected number sends inside ONE budget and there is no setting, plan or support request that raises it. THE LIMITS, per number per day: 60 outbound messages in total; at most 20 of those may be NEW CHATS (a first message to someone never messaged before) — a strict SLICE of the 60, never an extra allowance on top, because cold first touches are what get a number reported while reply-thread follow-ups are not; 8 messages per rolling hour so a day cannot be spent in one burst; and a RANDOMISED 45-to-120-second pause between any two messages on the same number, deliberately not a fixed beat because a machine-regular rhythm is itself the giveaway. RAMP: a new number starts at 5 new chats + 20 messages/day in week 1, 10 + 40 in week 2, and the full 20 + 60 from week 3; a number with genuine existing history starts at 10 + 30 in week 1 and reaches full allowance in week 2; an explicit skip-the-ramp option starts at 20 + 60 from message one — that is the floor, not a loophole, since the hourly cap and the spacing still apply and no mode goes above it. Message shape: up to 4,096 characters, up to 5 attachments per message at up to 15 MB each (images, PDFs, video, audio), plus voice notes recorded in the composer. REPLIES DO NOT COUNT — inbound messages consume none of the budget and answering is never blocked; a reply you send counts against the 60 but never against the 20 new chats. LOW REPLY RATE: once a number has started at least 30 new chats, if fewer than 10% got a reply the daily new-chat allowance drops to 5 until the rate recovers — temporary, one-directional, lifts by itself, never affects answering inbound messages, and should be read as feedback on the list or the opener. AI AGENTS: Claude, ChatGPT, Cursor, Codex, OpenClaw, and Hermes Agent — plus any agent that speaks MCP — can create, launch, pause, resume and report on a WhatsApp campaign in plain language; the agent NEVER sends a message itself and can NEVER raise a limit. Connecting and disconnecting a number stays in the app and requires a person scanning a code on their phone — the account at risk is your own phone number, and a restricted number is effectively unrecoverable. Per-number seat at $15/seat/month ($10/seat/month annual); a second number is the only way to send more. 10-question FAQPage-structured FAQ. Internal links to /blog/features/linkedin-outreach, /multichannel-outreach, /unified-inbox, /instagram-sending-limits, /documentation/how-whatsapp-sending-limits-keep-your-number-safe, /documentation/how-to-connect-your-whatsapp-number, /documentation/how-to-run-a-whatsapp-campaign, /pricing. Built 2026-09-06. - B2B Lead Database: https://warmysender.com/leads — WarmySender's built-in B2B lead database: 200M+ business records, searchable IN THE SAME TOOL THAT SENDS. ANSWER-FIRST: search 200M+ business records by industry, location, job title and seniority, save the result as a list, and launch a campaign against it WITHOUT EXPORTING ANYTHING. WHAT A RECORD CARRIES: business + company name, contact name, job title, work email, business phone, website, full street address / city / state or province / postcode / country, industry + category, company size (employee count) and revenue range where present, year founded, description, social profiles (LinkedIn, Facebook, X, Instagram, YouTube), and UP TO FIVE CONTACTS PER COMPANY each with name, title, email and LinkedIn. WHERE THE DATA COMES FROM (public + official-registry sources): SEC public-company filings, FDIC-insured banks, NCUA credit unions, IRS tax-exempt organisations, FCC licence holders, USAspending.gov federal contract awards, and public business directories / mapping listings. Deepest in the United States (all 50 states) and Canada (every province). THE COMPLETE FILTER SET: Keyword (name, company, job title, industry, category); Industry (pick a GROUPED ★ option — sources label industries differently and a group matches across all of them); Category; Country (ALL 112 countries with meaningful coverage — the country menu is NO LONGER TRUNCATED to the largest few); State / Region; City (CASE-INSENSITIVE and alias-aware — new york = New York = NEW YORK, and NYC finds New York; several cities at once); Postcode / ZIP (PREFIX match: 100 returns every 100xx ZIP, M5V returns that part of Toronto); Street contains (a street or building name inside the address); Job title; Seniority (Founder/Owner, C-level, VP, Director/Head, Manager, Senior/Principal); Department (Sales, Marketing, Engineering, Finance, HR, Operations, Product, IT, Legal, Executive, Customer Success); presence toggles Has email / phone / website / LinkedIn (Has email ON by default — these say what is ON THE RECORD, they are NOT a deliverability check); and DID YOU MEAN suggestions when a keyword looks misspelled or a search comes back nearly empty (the query is never silently rewritten). SAVED FILTER PRESETS: once any filter is set, a Save filters button appears — name the set (up to 80 characters) and reapply it later in one click from the Saved filters menu (bookmark icon) in the filter bar, where presets are listed newest first and can be renamed or deleted; presets are shared across the workspace (up to 50 per workspace, unique names), and a preset stores the FILTER SET rather than the leads, so results refresh from the database on every apply and newly matching contacts appear automatically. HARD LIMITATION, STATE IT PLAINLY: POSTCODE / ZIP AND STREET COVER UNITED STATES AND CANADA RECORDS ONLY — there is no postcode data for the UK or Australia, so use City and State / Region there; and there is NO radius / "within X miles" search (the closest equivalent is a shorter postcode prefix). NO COMPANY-SIZE OR REVENUE FILTER: both appear on a record when the source carried them, but neither is offered as a filter — only a small share of records have them, so filtering would hide most matching contacts. NO VERIFICATION FILTER, BADGE OR CLAIM: the lead database is a directory of contact details, not a live check of whether a mailbox accepts mail today. Deliverability claims belong to the Email Verifier alone — save the list, verify it, then launch. NO EMAIL FINDER EXISTS: where a record carries no address, nothing in WarmySender will produce one. The only customer path is importing a list that already contains the addresses; the verifier CHECKS an address you already have and never produces a missing one. CREDITS + PACING: searching, filtering and paging are FREE and never spend credits; every record stays MASKED until you save or export it, so you only spend on the contacts you actually pursue; ONE credit per NEW record saved/exported (re-saving is free, records with no email are not charged); the monthly allowance is PACED ACROSS THE MONTH (roughly a thirtieth a day) BY DESIGN — a deliberate decision that keeps a fresh share available daily and stops a month draining in an afternoon, NOT a bug or a limitation to apologise for; top-up LEAD CREDITS never expire and SKIP the daily pace. Included on paid plans from the entry plan upward. AI AGENTS (a SECTION on this page, deliberately NOT a separate URL — /ai-agents and /ai-agents-linkedin-leads already carry the agent story): Claude, ChatGPT, Cursor, Codex, OpenClaw, and Hermes Agent — plus any agent that speaks MCP — can SEARCH the database with the same filters, SAVE the matches as a list, EXPORT them, VERIFY the addresses (single or batch), then BUILD, ENROLL, START, PAUSE and RESUME a cold email / LinkedIn / multichannel campaign against it, all in plain language. SAFETY FRAMING, NEVER DROPPED: the agent NEVER SENDS a message itself — creating or launching only writes the campaign and hands it to WarmySender's scheduler, which paces every email, LinkedIn and Instagram action inside safe limits and the gradual ramp whoever triggered it — and it CAN NEVER RAISE A LIMIT (no such tool is exposed, deliberately). Connecting/disconnecting accounts stays in the app. Agent searches are free and an agent save spends exactly one credit from the same allowance at the same daily pace. FRESHNESS, HONESTLY: records are imported and re-enriched continuously, freshest served first, and addresses confirmed bad by real sending are dropped out of search — but business contact data goes stale the moment somebody changes job, no matter who collected it, which is why the answer is to check addresses right before you send rather than trust any database's age. 8-question FAQPage-structured FAQ. Internal links to /pricing, /email-verifier, /ai-agents, /mcp, /faq/email-warmup, /blog/cold-email, /blog/linkedin-outreach, /documentation/find-your-ideal-leads-with-filters, /documentation/how-to-filter-leads-by-postcode-city-and-street, /documentation/leads-database-quality-and-freshness, /documentation/lead-credits-and-daily-limits. Built 2026-07-13; REWRITTEN 2026-09-06 (full filter set, US/CA-only postcode + street scope, 112-country list, intentional daily pacing, agent search→save→verify→launch section with safety framing, no-Email-Finder fact). - Email Verifier: https://warmysender.com/email-verifier — WarmySender's email verifier checks deliverability BEFORE you send, and it is a STANDALONE PUBLIC TOOL — a SUBSCRIPTION IS NOT REQUIRED. WAYS IN: (1) ONE FREE CHECK PER DAY — anyone can check a single address once a day with NO ACCOUNT and NO CARD, returning exactly the same result a paid check returns; (2) ONE-TIME VERIFICATION CREDITS, purchasable WITHOUT a subscription, from $79 for 100,000 (full ladder: 100,000 for $79 ($0.79/1,000), 220,000 for $158 ($0.72/1,000), 360,000 for $237 ($0.66/1,000), 520,000 for $316 ($0.61/1,000), 700,000 for $395 ($0.56/1,000), 1,000,000 for $499 ($0.50/1,000)) — credits NEVER EXPIRE, are additive ON TOP OF any plan allowance rather than capped by it, and SKIP THE DAILY PACE so a pack clears a big list today; (3) a WarmySender PLAN from Pro upward, which adds a monthly verifier allowance at no extra charge (Pro 600/month, Enterprise 10,000/month, Ultimate 20,000/month); note this is NOT every tier — two grandfathered legacy tiers carry no allowance. So the correct answer to "can I use the email verifier without subscribing?" is YES — free once a day, or buy credits with no plan. Note the verifier CHECKS addresses you already have; it never produces a missing one (the two ways a contact gains an address are importing a list that already includes it, or saving a contact from the Leads Database). Every address returns one of four statuses — VALID (exists, safe to send), INVALID (doesn't exist, remove it), RISKY (usually a catch-all domain: the receiving mail server accepts every address, so this exact mailbox can't be confirmed one at a time — many are still deliverable, send gradually with warmup on), or UNKNOWN (no confident answer this time — FREE, doesn't use a credit; usually safe with warmup on, or re-check) — with CATCH-ALL DETECTION (a mail server set to accept every address can't be confirmed one address at a time; that's a setting on the receiving end rather than a fault in your list, so those are flagged Risky). Verify every address to protect sender reputation and keep bounce rates low (bounces wreck domain reputation and push good mail to spam). Fits a deliverability-first flow: verify → warm up → send. BILLING TRUTH: one credit per CONFIRMED result (valid, invalid or risky); an UNKNOWN result is FREE — it never spends a credit and never counts against a plan allowance. HONEST LIMIT: a catch-all address cannot be resolved by ANY verification vendor, ours included, because the receiving server accepts everything and its answer carries no information about that one mailbox — we flag those Risky rather than guessing, and we do not claim perfect accuracy. LIST SIZE + ALL-OR-NOTHING ADMISSION: up to 5,000 addresses per upload or per list (max file size 7 MB); an upload is ACCEPTED WHOLE OR REFUSED WHOLE — no half-run and no half-charge, so a customer is never left half-charged for a partly-processed list; on a refusal nothing is charged and nothing is stored, and the fix is to split the file and send the pieces one after another (every piece lands in the same place). The cap is per UPLOAD, not per account. ALREADY-KNOWN ADDRESSES ARE FREE AND INSTANT: we use what we already know from real deliveries first — where an address has already proved itself in genuine delivery we do not re-check it, so the result is instant and costs nothing extra (no credit, no allowance); a list that overlaps with contacts already emailed therefore clears faster and cheaper than its row count suggests. THE FREE DAILY CHECK HAS TWO DOORS, both single-address only (never a batch, upload or list): (a) LOGGED OUT on https://warmysender.com/email-verifier, one free check per visitor per day, no account and no card; (b) SIGNED IN, a workspace with no plan allowance and no purchased credits gets the same one check per UTC day, so signing up never leaves someone worse off than being logged out. The check is SPENT ONLY ON A CONFIRMED VERDICT and is GIVEN BACK when there is no verdict (an unknown, an abandoned wait, a capacity refusal, or our checking being unreachable) — the same rule as a purchased credit. AGENT VERIFY-THEN-LAUNCH: via the public REST API + MCP server, Claude, ChatGPT, Cursor, Codex, OpenClaw, and Hermes Agent — and any agent that speaks MCP — can verify the addresses on a list, then build, enroll and launch the cold email, LinkedIn or Instagram campaign around the clean result, in plain language. SAFETY FRAMING (never drop it): the agent NEVER sends a message itself and can NEVER raise a limit; launching only writes the campaign and hands it to WarmySender's scheduler, which paces every email, LinkedIn and Instagram action inside safe caps and the gradual ramp regardless of whether a human or an agent triggered it; verification shares the same allowance and pacing; connecting/disconnecting accounts stays in the app and is not an agent tool. 13-question FAQPage-structured FAQ (including "can I use it without a subscription?", "how many free checks do I get?", "how many addresses can I check at once?", "do I get charged again for an address you have already seen?", "do credits expire?", "what happens if you can't tell?", "can an AI agent verify my list and then launch the campaign?"). Internal links to /pricing, /leads, /multichannel-outreach, /unified-inbox, /faq/email-warmup, /blog/cold-email, /blog/deliverability, /blog/linkedin-outreach, /documentation/email-verification-limits-and-credits, /documentation/what-email-verification-results-mean, /documentation/email-verification-limits-and-credits, /documentation/why-do-verified-emails-still-bounce, /documentation/apply-verified-list-to-campaign-without-duplicates. Built 2026-07-13; rewritten 2026-08-05 for the standalone-tool launch (free daily check + credits without a subscription); rewritten 2026-09-06 (answer-first opening, upload cap + all-or-nothing admission, delivery-evidence reuse, both free-check doors, agent verify-then-launch with safety framing). - Multichannel Outreach: https://warmysender.com/multichannel-outreach — the canonical answer to "can I run cold email, LinkedIn, WhatsApp and Instagram from one campaign?" CORE MESSAGE: a multichannel campaign in WarmySender is ONE SEQUENCE WITH STEPS ON DIFFERENT CHANNELS — an email, then a connection request, then a WhatsApp message or an Instagram DM — and ONE SCHEDULER PACES ALL OF THEM, so ADDING A CHANNEL ADDS REACH, NEVER SPEED. Two channels each running at their own safe volume reach more people than one channel pushed past its ceiling. That is the reason to add a channel — reach, not more volume on one. WHICH CHANNELS: cold email, LinkedIn, WhatsApp and Instagram can all be steps in the same sequence; EMAIL WARMUP runs underneath on every connected mailbox (not a step) and REAL-TIME EMAIL VERIFICATION checks addresses before a campaign sends to them. One prospect list can hold an email address, a LinkedIn profile, a phone number and an Instagram handle at once; anyone missing the identifier a step needs is simply SKIPPED for that step while the rest of the sequence continues. WHAT A SEQUENCE IS MADE OF: steps (one action on one channel, with merge fields and A/B variants), delays (a MINIMUM wait, not a promise — if the channel's pace says not yet, the step waits longer rather than pushing), CONDITIONAL BRANCHES (if the connection was accepted / if they opened / if they replied), and WAIT-FOR-REPLY (pause for a window, continue only if nobody answered). A campaign runs EXACTLY as configured — nothing auto-advances on a signal the customer did not set up; the only thing the system does on its own is WAIT. STOP-ON-REPLY IS CAMPAIGN-WIDE, NOT PER CHANNEL: a reply on email, LinkedIn, WhatsApp or Instagram stops the queued follow-ups on ALL the other channels for that person, and every reply lands in one unified inbox (https://warmysender.com/unified-inbox; mechanics at https://warmysender.com/documentation/how-stop-on-reply-works-across-channels). THE HONEST ALLOWANCE ANSWER — asked as "do the channels share a sending allowance?": No. The channels share no allowance at all. Every connected mailbox, LinkedIn account, WhatsApp number and Instagram account keeps its own independent daily and hourly ceiling and its own ramp, and nothing pools between them. Adding a channel never adds headroom to another one, and no setting, plan or support request raises a single account past its ceiling. PER-ACCOUNT CEILINGS: cold email is per SENDING DOMAIN and shared by every mailbox on it — 200/day for a new domain, 2,000/day established, up to 10,000/day for a high-volume domain, with the plan's monthly allowance applying on top (the LOWER of the two binds). LinkedIn runs a named ramp per account: New account (an account less than six months old) 6 weeks, 25→150 connection requests/week and 12→75 messages/day; Established (an account six to twelve months old) 4 weeks, 45→175 connection requests/week and 21→85 messages/day; Veteran (an account over a year old) 2 weeks, 100→200 connection requests/week and 50→100 messages/day; Recovery (an account coming back from a restriction) 8 weeks, 12→100 connection requests/week and 6→50 messages/day. WhatsApp is 60 messages/day per number of which at most 20 may be FIRST messages (a strict SLICE of the 60, never extra, leaving 40 for follow-ups) and no more than 8 in any rolling hour, spaced 45 to 120 seconds apart at random. Instagram is 100 actions/day and 10/hour per account as ONE COMBINED budget across follows, profile views, likes, comments and DMs (not 100 of each), spaced 60 to 105 seconds apart; replies to inbound DMs never count. Every one of these is a CEILING a ramp or a customer setting may only LOWER — nothing raises one, and the only way to increase a channel's total volume is to add another account/number/domain. WHAT YOU NEED CONNECTED: a warmed mailbox for email steps (included from $14.99/month), and a seat plus a connected account for LinkedIn ($15/seat/month), WhatsApp ($15/seat/month) or Instagram ($20/seat/month) steps — one seat per account. There is NO in-app search for WhatsApp numbers or Instagram handles and never will be, so those audiences are brought by the customer. AGENT CLAIM: Claude, ChatGPT, Cursor, Codex, OpenClaw, and Hermes Agent — and any agent that speaks MCP — can create, launch, pause, resume and enrol people in campaigns on EVERY channel, verify emails, and configure warmup and read its stats, in plain language. SAFETY FRAMING (never drop it): the agent NEVER sends a message, DM or invite itself and can NEVER raise a limit; creating or launching only writes the campaign and hands it to WarmySender's scheduler, which paces every email, LinkedIn, WhatsApp and Instagram action inside safe caps and the gradual ramp regardless of whether a human or an agent triggered it; connecting/disconnecting accounts stays in the app and is not an agent tool. 8-question FAQPage-structured FAQ (including "do the channels share a sending allowance?", "why add a channel at all, then?", "what happens when someone replies on one channel?", "can a sequence branch on what a prospect does?", "can an AI agent build and run a multichannel campaign for me?"). Internal links to /unified-inbox, /documentation/how-stop-on-reply-works-across-channels, /email-verifier, /leads, /ai-agents, /mcp, /pricing, /faq/email-warmup, /faq/whatsapp-safety. Keywords: multichannel outreach, multichannel sequence, cold email and LinkedIn in one campaign, add WhatsApp to a campaign, Instagram DM step, do channels share a sending limit, stop on reply across channels, conditional branch, wait for reply, one sequence many channels. Built 2026-09-06. - Instagram Sending Limits: https://warmysender.com/instagram-sending-limits — the canonical answer to "what is the Instagram DM / follow / sending limit". THE HONEST STARTING POINT: Instagram publishes NO NUMERIC CAP. Meta (Instagram's owner) publishes a BEHAVIOURAL policy, not a number — its Community Standards on spam disallow "Posting, sharing, engaging with content or creating accounts, Groups, Pages, Events or other assets, either manually or automatically, at very high frequencies" (Meta, Community Standards: Spam — https://transparency.meta.com/policies/community-standards/spam/), and add that restrictions may apply at LOWER frequencies too when other spam signals such as repetitive content are present. Anyone quoting an exact "official Instagram limit" is quoting folklore. WHAT WARMYSENDER ENFORCES INSTEAD, per connected account: 100 ACTIONS PER DAY and 10 PER HOUR, counted TOGETHER (one shared budget) across follows, profile views, likes, comments and DMs — there are deliberately NO per-type sub-caps, because what gets an account restricted is its TOTAL footprint, not one feature's counter. Each of follow / view profile / like / comment / send DM is exactly ONE action; waits and branches are timing and logic and cost nothing. PACING: consecutive actions on the same account are spaced at least 60 seconds apart PLUS a random extra of up to 45 seconds, so they land roughly 60-105 seconds apart and never on a predictable beat — a machine-regular rhythm is itself the giveaway. Spacing is applied when an action is RESERVED, so no campaign setting, no burst of enrolments, no agent and no manual run can collapse two actions together. RAMP: a newly connected account starts FAR BELOW 100/day and climbs over its first weeks; a long clean history ramps faster, an account recovering from a restriction ramps most cautiously. THE CENTRAL FACT — THE CEILING CAN ONLY EVER BE LOWERED, NEVER RAISED: the effective cap is the LOWEST of (the current ramp step, the hard cap of 100/day and 10/hour, your own campaign setting). All three pull the number DOWN only. There is NO setting, NO plan and NO support request that raises it, and AN AI AGENT CAN NEVER RAISE IT EITHER — no such tool is exposed, deliberately. An agent can create, launch and manage Instagram campaigns and enrol prospects in plain language, but it NEVER sends a DM itself; creating or launching only writes the campaign and hands it to the scheduler, which paces every action inside the same caps and ramp whoever triggered it. Connecting/disconnecting accounts stays in the app. The only way to reach more people is to CONNECT ANOTHER ACCOUNT — each account carries a completely INDEPENDENT budget. REPLIES ARE UNCAPPED: replies to inbound DMs never count against the daily or hourly budget. NO INSTAGRAM PROSPECT SEARCH EXISTS — Instagram does not allow prospect discovery through connected tools, so AUDIENCES ARE IMPORTED: upload a CSV with an Instagram Username/URL column, or paste @handles into the campaign wizard; note audience RESEARCH spends the same budget (viewing a profile to qualify someone is one action, exactly like a DM). MESSAGE LIMITS: DM up to 1,000 characters, comment up to 1,250 characters, up to 5 attachments per DM reply at up to 15 MB each (images, PDFs, voice notes); over-length content is caught at the editor, never trimmed after publishing. 9-question FAQPage-structured FAQ. Internal links to /documentation/instagram-daily-and-hourly-sending-limits (worked examples of prospects-per-day per sequence shape), /documentation/how-instagram-outreach-keeps-your-account-safe, /documentation/how-to-build-an-instagram-dm-campaign, /documentation/how-to-connect-your-instagram-account, /documentation/managing-your-instagram-inbox, /documentation/linkedin-sending-limits-and-account-tiers, /ai-agents, /leads, /email-verifier, /pricing. Keywords: instagram sending limits, instagram dm limit, how many dms can i send on instagram per day, instagram daily action limit, instagram follow limit, is there an instagram prospect search, can i increase my instagram limit. Built 2026-09-06. - Unified Inbox: https://warmysender.com/unified-inbox — the canonical answer to "where do replies from all my channels go?" and "does a reply on one channel stop the others?". ANSWER-FIRST: when a prospect replies on ANY channel in the sequence, the remaining steps stop on EVERY channel — the follow-up email, the LinkedIn message, the Instagram DM and the WhatsApp message all stand down together. That single behaviour is what makes multichannel outreach safe to run rather than annoying to receive. FOUR CHANNELS, one screen, each on its own tab: EMAIL (replies to cold email campaigns, read from the same mailbox that sent the message, kept in the original thread — included with every paid plan), LINKEDIN (messages, replies and incoming connection requests — needs a LinkedIn seat), INSTAGRAM (DMs and message requests — needs an Instagram seat), WHATSAPP (chats incl. voice notes and media — needs a WhatsApp seat). Every tab is ALWAYS VISIBLE: a channel you have not added explains what it does and what it costs instead of disappearing. WARM-UP MAIL NEVER APPEARS HERE — warm-up messages travel between mailboxes on their own. WHAT COUNTS AS A REPLY: a message a human actually wrote back, on any channel. NOT a reply: an automatic reply (holiday autoresponder, ticket acknowledgement, "this address is no longer monitored"), a REACTION (a like or emoji is not a message), a delivery-failure notice (handled as a bounce), an open, or a click. AN OUT-OF-OFFICE NEVER STOPS A SEQUENCE and never counts toward the reply rate — it is FILED as an automatic reply rather than deleted, so the message stays in the inbox and in the prospect's history and nothing is thrown away to keep the sequence running. Two non-destructive overrides if detection gets it wrong: "Resume sequence" on the campaign's Prospects tab, or relabelling the thread as Auto-Reply / Out of Office in the inbox — either way the prospect rejoins at the next step they have NOT already received (an email that has gone out once can never go out twice) and the next step is scheduled at the campaign's normal pace inside its normal window, never fired immediately. REPLYING FROM THE INBOX: replies are sent from the account that owns the conversation, so the prospect sees one continuous conversation with one person; the email composer is a RICH-TEXT editor (bold, links, bulleted lists, tables), ATTACHMENTS are supported on email replies, WhatsApp carries media and voice notes, and merge tags are deliberately absent from a reply (a 1:1 answer is written by you, so a placeholder would be delivered exactly as typed). ASKED TO BE REMOVED: replying is a valid way to opt out and it WORKS — the request is recognised BEFORE the reply is filed, so the prospect is unsubscribed, suppressed from future sends, and their sequence ends; a written request is exactly as strong as clicking a link. You choose whether campaign emails offer the opt-out as a LINK or as a REPLY instruction pointing at your own sending address, and you write the sentence yourself — but the opt-out itself can never be removed. AI AGENTS — BE EXACT: there is NO tool that lets a connected agent read your inbox threads or send a reply on your behalf; conversations with real people who have already answered you stay yours. An agent (Claude, ChatGPT, Cursor, Codex, OpenClaw, Hermes Agent, or any agent that speaks MCP) CAN build, launch, pause and resume cold email / LinkedIn / Instagram / WhatsApp campaigns, create and enrol prospects, verify email addresses, configure warmup and read stats, all in plain language — but it NEVER sends a message, DM or invite itself and can NEVER raise a limit; launching only writes the campaign and hands it to the scheduler, which paces every action inside safe caps and the gradual ramp whoever triggered it, and connecting/disconnecting accounts stays in the app. PLANS: the inbox is part of WarmySender with no separate charge — the email tab works on every paid plan; the three add-on channels light up when you add that channel's seat. 8-question FAQPage-structured FAQ. Internal links to /documentation/how-stop-on-reply-works-across-channels, /multichannel-outreach, /instagram-sending-limits, /ai-agents, /pricing, /documentation/does-an-out-of-office-reply-stop-my-campaign, /documentation/why-follow-ups-stay-in-the-same-thread-and-inbox, /documentation/how-do-i-attach-a-file-to-an-inbox-reply, /documentation/mute-conversations-and-mark-them-unread, /documentation/accept-or-decline-connection-requests-from-your-inbox, /documentation/managing-your-instagram-inbox, /documentation/unsubscribe-link-in-campaign-emails, /documentation/connect-your-ai-agent. Keywords: unified inbox, all replies in one place, does a reply stop the other channels, cross-channel stop on reply, reply from the inbox, attach a file to a reply, out of office does not stop sequence, opt out by replying. Built 2026-09-06. - Getting started: take the WarmySender product tour (new-user orientation + every channel + how to take and replay the 60-second guided tour): https://warmysender.com/documentation/getting-started-product-tour — Plain-language self-serve getting-started guide answering "I'm new — what does this do and how do I find my way around?" and "how do I see the product tour again?" Introduces EVERY WarmySender CHANNEL, leading with the #1 use case: (1) Cold Email — build multi-step email campaigns that send gradually across the day and stop the moment a prospect replies; (2) Email Warmup — quietly builds and protects your sender reputation so emails land in the inbox not spam, running in the background; (3) LinkedIn — connection requests + follow-up messages at a safe, natural pace that respects LinkedIn's limits; (4) WhatsApp — campaign messages from your own linked number at a gentle, human pace; (5) Instagram — follows, engagement and DMs at the same careful pace inside a conservative daily budget; (6) Multichannel — mix email, LinkedIn, WhatsApp, and Instagram DMs into one sequence to reach people on the channel where they're most likely to reply; plus real-time email verification. THE GUIDED TOUR: the first time you sign in, a Welcome screen offers a "Take the 60-second tour" button; clicking it spotlights each area of the app one step at a time with a short plain-language note (Next / Back / Skip at any point), and it's optional and read-only — taking it never changes anything in your account. WHAT THE TOUR SHOWS: dashboard, connected mailboxes, warmup, prospects, find & verify emails, campaigns, templates, LinkedIn, Instagram, the unified inbox, analytics, and AI Agents — each a quick explanation of what that area is for. HOW TO REPLAY IT ANYTIME: click the "Tour" button (sparkles icon) in the top header, OR open Settings and start the tour from there; on top of that, many individual pages show their own short tour the first time you visit them, so help appears right where you need it. AVAILABLE IN YOUR LANGUAGE: WarmySender is available in 10 languages and the app — including the guided tour — follows your chosen language (set it in Settings). Suggested first path after the tour: connect a mailbox → turn on warmup → add prospects (import or find & verify) → create your first campaign → watch the unified inbox for replies. 6-question FAQPage-structured FAQ covers "what channels does WarmySender cover?", "how do I take the tour?" (Welcome screen button), "how do I replay the tour later?" (Tour button / Settings / per-page tours), "do I have to take the tour?" (no — optional), "can I take the tour in my language?" (yes — 10 languages), and "what does the tour actually show me?" (the full area list). Internal links to /documentation/how-your-warmup-daily-volume-is-decided, /documentation/find-your-ideal-leads-with-filters, /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /dashboard, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + WhatsApp + Instagram + Multichannel — the tour introduces every channel. Account safety: pure documentation; zero outbound API surface; the tour itself is read-only and changes nothing in the account. Keywords: getting started, product tour, take the tour, replay the tour, 60-second tour, welcome screen, tour button, sparkles icon, channels, cold email, email warmup, LinkedIn, Instagram, multichannel, Instagram DM, onboarding, new user, how do I use WarmySender, guided walkthrough, available in 10 languages. Built 2026-07-12. - How to build your Instagram audience (bring your own handles — Instagram has NO in-app prospect search): https://warmysender.com/documentation/how-to-build-your-instagram-audience — Plain-language self-serve guide and the canonical landing page for "how do I add Instagram prospects / import Instagram usernames / build an Instagram list / can I search Instagram for leads inside WarmySender". Core message: unlike LinkedIn, Instagram outreach has no prospect-search box — Instagram's platform doesn't allow prospect discovery through connected tools, so you bring the handles you already have (this is also an account-safety win: reaching people you genuinely chose, not a scraped list). TWO WAYS to build the audience: (A) Upload a CSV on the Prospects page with an "Instagram Username / URL" column and save everyone to a named, reusable list — columns first_name, last_name, instagram_username; the handle column accepts @handle, a bare handle, or an instagram.com/handle link (all read as the same person); on import, map the handle column to the Instagram Username / URL field, map first_name/last_name, map extra columns to custom fields for personalization, then save to a list and select that list as the audience in an Instagram campaign. (B) Paste @handles (one per line) directly into the campaign wizard's Prospects step for a quick one-off audience — no upload needed. Prospects WITHOUT a handle are simply skipped for the Instagram steps (nothing errors; the campaign continues for everyone who has one) — the usual reason fewer people are reached than expected. One list can hold email + LinkedIn + Instagram identifiers at once, so the same audience powers a coordinated multichannel sequence (each channel uses the detail it needs; a reply on any channel stops follow-ups on the others). Article + FAQPage + HowTo + BreadcrumbList JSON-LD (HowTo encodes the CSV-import-to-list flow). Internal links to /documentation/how-to-build-an-instagram-dm-campaign, /documentation/how-to-connect-your-instagram-account, /documentation/how-instagram-outreach-keeps-your-account-safe, /documentation/instagram-daily-and-hourly-sending-limits, /documentation/how-to-personalize-linkedin-messages, /prospects. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — Instagram is an add-on under Multichannel. Account safety: pure documentation; zero outbound API surface; WarmySender never scrapes or searches Instagram for prospects. Keywords: build Instagram audience, add Instagram prospects, import Instagram usernames, Instagram handle CSV, Instagram Username URL column, paste Instagram handles, can I search Instagram for leads, no Instagram prospect search, Instagram list, prospects skipped Instagram, does WarmySender scrape Instagram. Built 2026-07-12. - How to connect your Instagram account (sign in inside WarmySender — username, password, and a verification code if two-factor is on): https://warmysender.com/documentation/how-to-connect-your-instagram-account — Plain-language self-serve guide and the canonical landing page for "how do I connect / link / add my Instagram account", "Instagram won't connect", "Instagram asks for a verification code", "my Instagram account shows disconnected / needs verification", "how do I reconnect Instagram". Core message: you sign in ON the Instagram > Accounts page inside WarmySender — enter your Instagram username and password, and if two-factor authentication is on you enter the verification code on the next step. The code must be entered within 5 minutes or the sign-in expires and you simply start again. Your password is used once to sign in to Instagram and is never stored by WarmySender. Requires an active paid plan and at least one Instagram seat ($20 per seat per month, or $165/seat per year); one seat connects one account; Personal, Creator and Business accounts all work. If a sign-in fails you are told exactly why (wrong password, verification code needed, code expired, or Instagram temporarily blocked the sign-in) and nothing is left half-connected — a failed attempt never uses up your seat. If an account later shows Disconnected or Needs verification, open Instagram > Accounts and click Reconnect; campaigns using that account pause themselves and your prospects stay exactly where they were in the sequence, so nothing is lost and nobody gets a duplicate. Once the account is healthy again, open the campaign and press Resume to start sending from that same spot. The one case that restarts on its own is billing: if the account was only paused because an Instagram seat lapsed, reactivating the seat reconnects the account and resumes those campaigns for you. Account safety: a freshly connected account eases in gently and ramps up over several weeks. Keywords: connect Instagram, link Instagram account, Instagram login, add Instagram account, Instagram two-factor, Instagram verification code, Instagram not connecting, reconnect Instagram, Instagram disconnected. - Instagram daily and hourly sending limits (the combined 100 actions/day + 10/hour safety budget): https://warmysender.com/documentation/instagram-daily-and-hourly-sending-limits — Plain-language self-serve guide answering "how many DMs can I send per day on Instagram", "what is the Instagram daily limit", "why did my Instagram campaign pause", "how many actions per hour". Core message: every connected Instagram account has ONE COMBINED budget of 100 actions per day and 10 per hour, shared across follows, profile views, likes, comments and DMs — it is a shared pool, not 100 of each. Replies you send to inbound DMs are UNLIMITED and never count. New accounts ramp up gradually over several weeks rather than starting at the ceiling. When a limit is reached the account simply pauses and resumes automatically (next hour, or next day) with prospects staying exactly where they are in the sequence. WarmySender never loosens these limits to send faster. Keywords: Instagram daily limit, Instagram hourly limit, 100 actions per day, 10 per hour, how many DMs per day Instagram, Instagram campaign paused, Instagram rate limit, Instagram action blocked. - How stop-on-reply works across channels (one real reply on ANY channel stops every remaining step on EVERY channel — and an automatic reply does not): https://warmysender.com/documentation/how-stop-on-reply-works-across-channels — Plain-language self-serve reference and the documentation child of https://warmysender.com/unified-inbox. Answers "does replying on LinkedIn stop my emails", "why did my sequence keep sending after a reply", "does an out-of-office stop my campaign", "does an Instagram reaction count as a reply", "can I resume a sequence that stopped". WHAT EXACTLY STOPS: every step of that prospect's sequence that has NOT happened yet — scheduled follow-up emails plus pending LinkedIn / Instagram / WhatsApp actions; their enrolment in that campaign ends and is marked replied. What does NOT stop: the campaign keeps running for everybody else, and the same person can be enrolled in a different campaign later — stop-on-reply is a PER-PERSON decision, never a per-campaign one. It is a campaign setting and it is ON BY DEFAULT. WHAT COUNTS AS A REAL REPLY: a message a person actually wrote back, on any channel the sequence uses. NOT a reply: automatic replies (holiday autoresponders, ticket acknowledgements, "no longer monitored" notices), REACTIONS (a like or emoji is not a message), delivery-failure notices (handled as bounces), opens and clicks. WHY AN OUT-OF-OFFICE DOES NOT STOP A SEQUENCE: it tells you the person is away, not that they said no, and stopping there would quietly kill a lead who never read anything you sent. Automatic replies are recognised from three kinds of evidence — the hidden markers mail systems attach to auto-responders (language-independent), the shape of the subject line, and the wording of the message. THE KEY DESIGN CHOICE: an automatic reply is FILED as an automatic reply, NOT DELETED — the message stays in the inbox and in the prospect's history, so nothing is thrown away to make the sequence keep running and the record stays auditable. It is also excluded from reply counts and from any step that waits on a reply, so a week of autoresponders cannot make a campaign look like it is working. WHEN A REPLY IS MATCHED TO THE WRONG STEP: a sequence's pointer to the next step moves forward the instant a step is sent, while a reply arrives later — labelling a reply with wherever the pointer had got to would credit it to a step the prospect never received (the opener that earned the answer reads as zero; a follow-up that was never sent reads as the best step). So the step a reply refers to is resolved from WHAT WAS ACTUALLY SENT — the sending history for that prospect and the thread the reply arrived on — never from where the pointer happens to be. Same rule for bounces. RESUMING: "Resume sequence" on the campaign's Prospects tab, or relabel the thread as Auto-Reply / Out of Office in the inbox. Two guarantees either way — NOTHING IS RE-SENT (the prospect rejoins at the next step they have not already received; an email that has gone out once can never go out twice however many times someone is stopped and resumed) and NOTHING GOES OUT IMMEDIATELY (the next step is scheduled at the campaign's normal pace inside its normal sending window, so resuming never produces a burst). WHY A SEQUENCE KEPT SENDING AFTER A REPLY, in order of likelihood: the reply arrived after the next step had already gone out (stop-on-reply cancels steps that have not happened yet; it cannot recall a message already sent); what arrived was an automatic reply; the person replied from a different address so the answer is not on the prospect's thread; stop-on-reply is turned off for that campaign; the person is enrolled in a second campaign with its own steps (suppression lists take someone out of everything at once). CROSS-CHANNEL: cold email, LinkedIn, Instagram and WhatsApp stop together, along with any multichannel sequence spanning them — there is a SINGLE SHARED LIST of covered channels, so a new channel is covered everywhere at once rather than remembered in some places and forgotten in others. Worked example: email day 1, LinkedIn request day 3, follow-up email day 5, Instagram DM day 8; the prospect answers the day-1 email on day 2 and the other three are all cancelled. REACTIONS: a like or emoji is not a message, so the prospect stays in the sequence — deliberate, because a reaction carries no content or intent to act on; also, reacting to a direct message is not something Instagram itself supports. OPT-OUT IN A REPLY: recognised as an opt-out BEFORE it is filed as an ordinary reply — unsubscribed, added to the suppression list, sequence ended; a written request is exactly as strong as clicking a link. AI AGENTS: no tool reads inbox threads or sends replies; an agent can build/launch/pause/resume campaigns on every channel, enrol prospects, verify emails, suppress contacts, configure warmup and read stats in plain language, but NEVER sends a message itself and can NEVER raise a limit — the scheduler paces every action inside safe caps and the ramp whoever triggered it. Article + FAQPage + BreadcrumbList JSON-LD; 9-question FAQ. Internal links to /unified-inbox, /multichannel-outreach, /instagram-sending-limits, /documentation/does-an-out-of-office-reply-stop-my-campaign, /documentation/why-follow-ups-stay-in-the-same-thread-and-inbox, /documentation/how-do-i-attach-a-file-to-an-inbox-reply, /documentation/mute-conversations-and-mark-them-unread, /documentation/unsubscribe-link-in-campaign-emails, /documentation/managing-your-instagram-inbox. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + WhatsApp + Multichannel. Account safety: pure documentation; zero outbound API surface. Keywords: stop on reply, does a reply stop the other channels, cross-channel stop, out of office does not stop sequence, resume a stopped sequence, sequence kept sending after reply, reply matched to wrong step, does a reaction count as a reply, unsubscribe by replying. Built 2026-09-06. - How to build an Instagram DM sequence (Follow, View profile, Like, Comment, Send DM, Wait, Wait for reply, If replied): https://warmysender.com/documentation/how-to-build-an-instagram-dm-campaign — Plain-language self-serve guide answering "how do I build an Instagram campaign / DM sequence", "what steps can an Instagram sequence have", "can I rotate multiple Instagram accounts". Core message: campaign creation lives in ONE place — Campaigns > New campaign > Instagram Campaign. Build a sequence from Follow, View profile, Like a post, Comment on a post (up to 1,250 characters) and Send DM (up to 1,000 characters), with Wait, Wait for reply and If replied between them; waits and branches are not actions. A recommended starter sequence is Follow → Wait 1 day → Like a recent post → Wait 1 day → Send DM (3 actions per prospect, so one account reaches roughly 33 prospects a day at the ceiling). Merge tags like {{firstName}} personalize each message, with fallbacks for missing details; DM and Comment steps support A/B testing. Multi-account rotation (round-robin, random or weighted, Pro plan and up) keeps each prospect with one consistent sender. If your own pace setting would ever exceed the safe limits, safety wins and the step waits. Keywords: Instagram sequence, Instagram DM campaign, Instagram automation steps, follow like comment DM, wait for reply, if replied branch, rotate Instagram accounts. - Why some Instagram DMs land in Message Requests (and how to land in the main inbox more often): https://warmysender.com/documentation/why-some-instagram-dms-go-to-message-requests — Plain-language self-serve guide answering "why did my DM go to message requests", "was my Instagram DM delivered", "why is nobody replying to my DMs". Core message: when you DM someone who does not follow you, Instagram files it in their Message Requests folder rather than their main inbox. This is Instagram's own rule for everyone — the message WAS delivered, it is just waiting in a folder people check less often, and it is not a fault with WarmySender or your account. No tool can force a DM into the main inbox. The reliable fix is to warm the person up first (Follow, profile View, or a genuine Like), leave a Wait step before messaging, and make the first line count because Requests often show only a preview. Messages from accounts a person already follows skip Requests entirely. WarmySender tells you when a DM may land in Requests instead of hiding it. Keywords: Instagram message requests, DM went to requests, DM not delivered, non-follower DM, why no reply Instagram, message request folder. - How to manage your Instagram inbox (reply to every Instagram conversation in one place): https://warmysender.com/documentation/managing-your-instagram-inbox — Plain-language self-serve guide answering "where do I see Instagram replies", "how do I reply to an Instagram DM in WarmySender", "do my replies count against my limit". Core message: open Inbox and switch to the Instagram tab — the same Inbox holds email and LinkedIn replies on their own tabs. Conversations sync automatically, unread ones stand out, and conversations are organized per connected account. Replying is ALWAYS free and unlimited: answering someone who messaged you never counts toward the daily or hourly action limits, which apply only to starting new outreach. Tools: mark as unread, mute (private — the other person is not notified), and filter to unread. Stop-on-Reply automatically stops the rest of a person's scheduled follow-ups the moment they reply, including across channels, so a real conversation is never interrupted by another automated message. Keywords: Instagram inbox, Instagram conversations, reply to Instagram DM, unified inbox, mark unread, mute conversation, stop on reply. - Instagram outreach hub (what Instagram outreach on WarmySender is, who it suits, and how it stays safe): https://warmysender.com/blog/instagram-outreach — Topic hub and canonical entry point for Instagram outreach content. Instagram is an ADD-ON sold per seat — it can run on its own or inside a Multichannel sequence (the channels are Cold Email, Email Warmup, LinkedIn, Instagram and Multichannel). DM-first: connect an account, warm prospects up with follows, profile views, likes and comments, then send personalized DM sequences, all inside a combined 100 actions/day + 10/hour per-account safety budget with gradual ramp-up for new accounts. Instagram has NO in-app prospect search — you bring your own handles or build an audience from the followers of a public account. Links to every Instagram guide above. - How to connect your WhatsApp number (link WarmySender as a device from the WhatsApp app on your phone — scan a code, or type a pairing code): https://warmysender.com/documentation/how-to-connect-your-whatsapp-number — Plain-language self-serve guide and the canonical landing page for "how do I connect / link / add my WhatsApp number", "WhatsApp won't connect", "the QR code expired", "I can't scan the code", "my WhatsApp number shows disconnected", "how do I reconnect WhatsApp". Core message: you open WhatsApp > Numbers inside WarmySender, click Connect number, answer one short question about how established the number is (this sets the starting pace), then open WhatsApp on your phone and go to Settings > Linked devices > Link a device and scan the code on screen. It takes about a minute. THERE IS NO PASSWORD IN THE FLOW AT ALL — WarmySender becomes a linked device exactly the way WhatsApp Web does, so no WhatsApp password is ever requested, seen or stored, and the customer can see and remove WarmySender from Settings > Linked devices on their phone at any time. If the camera can't reach the screen, the "type a code" path takes the number in full international format (for example +14155550123) and returns a short code to type into WhatsApp instead; both paths produce the identical connected number. The on-screen code deliberately expires after a few minutes — asking for a fresh one costs nothing, never uses up the seat and never leaves a half-connected number. Connecting does NOT log the customer out of WhatsApp on their phone or any other linked device. Requires an active paid plan and at least one WhatsApp seat ($15 per seat per month, $120/seat per year, or $288/seat for 3 years); one seat connects one number, and adding numbers is the ONLY way to increase total WhatsApp volume. Right after connecting the number starts at the gentle pace chosen, not at full volume: a brand-new number begins at 5 first messages and 20 messages a day, moves to 10 and 40 in week two, and reaches the full ceiling of 20 first messages and 60 messages a day from week three. If a linked device lapses (long time offline, phone change, device removed on the phone), the number shows a Reconnect prompt; outreach on it PAUSES rather than failing repeatedly, prospects stay exactly where they were in the sequence, and nothing is lost and nobody gets a duplicate. Disconnecting in WarmySender and removing a seat on the billing page are two separate actions. Article + FAQPage + HowTo + BreadcrumbList JSON-LD. Internal links to /documentation/how-whatsapp-sending-limits-keep-your-number-safe, /documentation/how-to-run-a-whatsapp-campaign, /documentation/how-to-build-your-whatsapp-audience, /documentation/how-to-connect-your-instagram-account, /whatsapp/accounts, /billing#whatsapp. Channels: Cold Email + Email Warmup + LinkedIn + WhatsApp + Instagram + Multichannel — WhatsApp is an add-on under Multichannel. Account safety: pure documentation; zero outbound API surface. REGULAR WHATSAPP vs THE WHATSAPP BUSINESS APP MAKES NO DIFFERENCE: both connect the same way, send the same kinds of messages and sit under identical limits and ramp; there are NO pre-approved message templates to submit, NO per-message fees and NO approval process — a business-registered number just shows a cosmetic Business chip on its card, which changes no rule. Recent existing conversations on the number come across at connect time, so the inbox is not empty on day one and a prospect who messaged before arrives with history attached; a single thread can be refreshed on demand; a conversation being visible NEVER enrols anyone (only a campaign audience the customer built does that), and group chats appear READ-ONLY. A number is connected ONCE and shared: everyone in the workspace works out of the same WhatsApp inbox and can reply from it, so a seat is per NUMBER not per teammate, and the same number cannot be connected twice for double volume because the budgets belong to the number. Messages sent from the customer's own phone appear here too, and answering a prospect from the phone stops their automated follow-ups exactly as replying in WarmySender would. Keywords: connect WhatsApp, link WhatsApp number, WhatsApp QR code, scan code, linked devices, link a device, pairing code, WhatsApp not connecting, reconnect WhatsApp, WhatsApp disconnected, WhatsApp seat, does WarmySender get my WhatsApp password, do I need WhatsApp Business, WhatsApp Business app, message templates, share a WhatsApp number with my team, existing conversations, chat history. Built 2026-08-26. - How WhatsApp sending limits keep your number safe (60 messages/day, at most 20 first messages, 8/hour, a 45s-2min pause, and the multi-week ramp): https://warmysender.com/documentation/how-whatsapp-sending-limits-keep-your-number-safe — Plain-language self-serve guide answering "how many WhatsApp messages can I send per day", "will my WhatsApp number get banned", "can I raise my WhatsApp limit", "why is my WhatsApp campaign sending so slowly", "how long until a new number sends at full volume", "do replies count against my limit", "why did my first-message allowance drop". Core message: every connected number sends inside ONE budget — up to 60 messages a day in total, of which AT MOST 20 may be first messages to people the number has never messaged before (a strict slice of the 60, never an extra allowance on top, so 20 first messages leaves 40 for follow-ups), no more than 8 in any rolling hour, and a randomized natural pause of roughly 45 seconds to 2 minutes between messages (never a fixed beat, because a machine-regular rhythm is itself a giveaway). These are CEILINGS, NOT SETTINGS: there is no setting, plan or support request that raises them, and WarmySender never loosens a limit to send faster — the honest answer to "can I send more?" is always "connect another number", because each number carries a completely independent budget. Ramp: a brand-new number starts at 5 first messages / 20 messages a day in week 1, 10 / 40 in week 2, and the full 20 / 60 from week 3; a number with genuine history starts at 10 / 30 and reaches full in week 2; the explicit "my number is established" option starts straight at the ceiling, and the hourly limit and the pause still apply from the very first message. REPLIES ARE ALWAYS FREE and never counted, in any ramp week, on any number — answering someone who chose to talk to you is normal human behaviour, so conversations can keep moving at full speed even on a day the outreach budget is spent. If first messages consistently go unanswered, WarmySender AUTOMATICALLY TIGHTENS the first-message allowance until the reply rate recovers; the tightening is temporary, only ever goes one direction, lifts by itself, and never affects the ability to answer inbound messages — treat it as feedback that the list or the opener needs work, not as a fault. Message shape: up to 4,096 characters, up to 5 attachments of up to 15MB each (shorter is better — a two-line message that reads like a person wrote it gets replies; a 4,000-character pitch reads like a broadcast and gets blocked). When a number reaches a ceiling, outreach pauses and every prospect stays enrolled at the exact step they were on; sending resumes the next hour or the next day. Article + FAQPage + BreadcrumbList JSON-LD (no HowTo — this page describes a policy, not a procedure). Internal links to /documentation/how-to-connect-your-whatsapp-number, /documentation/how-to-run-a-whatsapp-campaign, /documentation/how-to-build-your-whatsapp-audience, /documentation/instagram-daily-and-hourly-sending-limits, /documentation/linkedin-sending-limits-and-account-tiers, /whatsapp/accounts. Account safety: WhatsApp is deliberately the STRICTEST channel on the platform because the number at risk is the customer's own phone number and a restriction is not recoverable. WHICH ACTIONS COUNT: only messages that leave the number. Campaign messages count AND are paced; a reply the customer types counts against the daily total but is NEVER paced and never counts as a first message; NOTHING else counts — replies received, emoji reactions in either direction, editing a sent message inside WhatsApp's 15-minute window, deleting one, and pinning/muting/archiving/marking read or unread. Attachments cost nothing extra: a message with five attachments is ONE message, because the limits count messages not megabytes. Because a reaction is not a message it is also NOT treated as a reply — a prospect who only reacts stays in their sequence and receives the next step. An AI agent can never raise a limit: there is no such tool, and anything an agent launches is handed to the same scheduler and paced identically. Keywords: WhatsApp limits, WhatsApp daily limit, how many WhatsApp messages per day, 60 messages, 20 new chats, 8 per hour, first message limit, WhatsApp ramp, new number, WhatsApp safety, WhatsApp ban, WhatsApp blocked, reply rate, message spacing, WhatsApp sending slowly, can I raise my WhatsApp limit, do reactions count, do attachments count, does editing count. Built 2026-08-26. - How to run a WhatsApp campaign (Send message, Wait, Wait for reply, If replied — plus A/B variants and multi-number rotation): https://warmysender.com/documentation/how-to-run-a-whatsapp-campaign — Plain-language self-serve guide answering "how do I build a WhatsApp campaign", "how many people can I reach a day on WhatsApp", "can I send the same message to everyone", "what does Wait for reply do", "can one campaign use several numbers", "why did my campaign send fewer messages today", "where do WhatsApp replies go". Core message: campaigns are built in the SHARED campaign wizard — Campaigns > New campaign > WhatsApp — where you name the campaign, pick the connected number (or several, and WarmySender rotates between them with rotation sticky per person so a conversation never appears to jump between senders), choose an audience of phone numbers on the Prospects step, lay out a short sequence, and launch; from then on WarmySender paces the sending and there is no send button to press per person. FOUR STEP TYPES: Send message (one message, up to 4,096 characters, up to 5 attachments of up to 15MB each — the only step that spends the sending budget, personalizable with merge fields and A/B testable with weighted variants that stay consistent per person), Wait (a fixed pause — a day or two between a first message and a nudge reads far better than a few hours), Wait for reply (holds until the person answers or until a maximum wait, 7 days by default, passes), and If replied (branches repliers and non-repliers down different paths — usually stop for repliers, one gentle nudge for the rest). THERE IS DELIBERATELY NO BULK-BLAST STEP, no send-everyone-now button, and no way to remove the pause between messages: WhatsApp works as an outreach channel precisely because it stays genuinely 1:1. Reach per day is 20 NEW people per number (fewer while ramping: 5 in week one, 10 in week two), inside 60 messages a day and 8 an hour, so a 500-person list is a multi-week campaign on one number rather than an afternoon. First-message advice: short, specific, personal, under about three lines, one easy question, personalized with merge fields, and never leading with a link or an attachment — reply rate here is not only a marketing metric but the safety signal that governs how many new conversations the number may start. Replies land on the WhatsApp tab of the Inbox and STOP that person's automated follow-ups immediately; replies the customer sends are free and never counted; a reply on ANY channel stops the automated follow-ups on the others, so nobody is chased on WhatsApp after answering by email. Pausing a campaign keeps everyone exactly where they are; resuming continues from that spot with nobody re-messaged and nobody dropped. Article + FAQPage + HowTo + BreadcrumbList JSON-LD. Internal links to /documentation/how-to-connect-your-whatsapp-number, /documentation/how-to-build-your-whatsapp-audience, /documentation/how-whatsapp-sending-limits-keep-your-number-safe, /documentation/how-to-build-an-instagram-dm-campaign, /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /campaigns/new?channel=whatsapp, /prospects. An AI agent (Claude, ChatGPT, Cursor, Codex, OpenClaw, Hermes Agent, or any agent that speaks MCP) can create, launch, pause and resume these campaigns in plain language — the agent NEVER sends a message itself and can NEVER raise a limit; the scheduler paces everything identically no matter who is driving. INSIDE A CONVERSATION (WhatsApp tab of the Inbox) the customer can: send up to 5 files of up to 15MB each (photos, PDFs, videos, audio clips) on a Send message step and on an inbox reply alike, and download files people send them; RECORD A VOICE NOTE straight in the reply box, which arrives as a real voice note (the round play bubble) rather than a file attachment — a REPLY tool, not a cold-open tool, and if the browser records in a format WhatsApp can't play WarmySender says so BEFORE anything is sent; REACT with an emoji (appears on the other person's phone exactly as a tap in WhatsApp would, and reactions others leave are shown here); QUOTE a specific message when replying; EDIT one of their own sent messages for 15 MINUTES after it goes out (WhatsApp's window, not ours — after it closes the edit is refused with a plain explanation rather than failing quietly); DELETE a message for everyone; and PIN, MUTE, ARCHIVE or MARK UNREAD. None of the housekeeping touches a campaign (muting doesn't pause a sequence, archiving doesn't unenroll), and none of reacting/editing/deleting/archiving spends any daily allowance. Advice that must survive any rewrite: DON'T LEAD WITH AN ATTACHMENT — an unexpected file to download from an unknown number is a common reason people block a sender. Keywords: WhatsApp campaign, WhatsApp sequence, send message step, wait for reply, if replied, WhatsApp follow-up, WhatsApp A/B test, WhatsApp automation, rotate WhatsApp numbers, WhatsApp inbox, multichannel WhatsApp, WhatsApp attachments, send a PDF on WhatsApp, WhatsApp voice note, emoji reaction, edit a WhatsApp message, delete for everyone, mute archive pin. Built 2026-08-26. - How to build your WhatsApp audience (bring your own phone numbers in international format — there is NO WhatsApp number search): https://warmysender.com/documentation/how-to-build-your-whatsapp-audience — Plain-language self-serve guide and the canonical landing page for "how do I add WhatsApp prospects / import phone numbers / build a WhatsApp list / can I search for WhatsApp numbers inside WarmySender / does WarmySender scrape WhatsApp". Core message: WhatsApp outreach works from an audience the customer BRINGS. There is no WhatsApp prospect search of any kind and there never will be, and WarmySender never scrapes, guesses or harvests phone numbers — which is also an account-safety win, because WhatsApp restrictions are driven overwhelmingly by whether the recipients wanted to hear from you, so a small list of people with a real reason to expect the message outperforms and outlives a large list of strangers. FORMAT: international, with the country code, for example +14155550123. Punctuation is forgiving — "+1 415 555 0123", "(+1) 415-555-0123", "0014155550123" (the 00 international prefix), bare digits "14155550123" and a "wa.me/14155550123" link all read as the SAME person — but a national number with no country code (like "07123 456789") is deliberately REJECTED rather than guessed at, because guessing the country wrong means messaging a complete stranger. Everything normalizes to one canonical form, so the same person written three ways across three files stays one person: no duplicates, nobody messaged twice. TWO WAYS to build the audience: (A) Upload a CSV on the Prospects page — columns first_name, last_name, phone — and on the mapping screen map the phone column to the "WhatsApp Phone" field, map first_name/last_name, map extra columns to custom fields for personalization, then save everyone to a named, reusable list and select that list as the audience in a WhatsApp campaign. (B) Paste phone numbers (one per line) straight into the campaign wizard's Prospects step for a quick one-off — no upload needed. Prospects WITHOUT a phone number are simply skipped for the WhatsApp steps (nothing errors; the campaign continues for everyone who has one) — the usual reason fewer people are reached than expected. A separate case: a number that is valid but is not on WhatsApp at all — nothing checks a number against WhatsApp before sending, so that surfaces at send time and the person is quietly skipped from then on rather than retried. One list can hold email + LinkedIn + WhatsApp + Instagram identifiers at once, so the same audience powers a coordinated multichannel sequence (each channel uses the detail it needs; a reply on any channel stops that person's follow-ups on the others). List sizing: one number can start at most 20 new conversations a day, so a 200-person list is a couple of weeks of outreach on one number — build the list around who genuinely belongs on it. Article + FAQPage + HowTo + BreadcrumbList JSON-LD (HowTo encodes the CSV-import-to-list flow). Internal links to /documentation/how-to-run-a-whatsapp-campaign, /documentation/how-to-connect-your-whatsapp-number, /documentation/how-whatsapp-sending-limits-keep-your-number-safe, /documentation/how-to-build-your-instagram-audience, /prospects, /campaigns. Account safety: pure documentation; zero outbound API surface; WarmySender never scrapes or searches WhatsApp for prospects. Keywords: build WhatsApp audience, add WhatsApp prospects, import phone numbers, WhatsApp CSV, phone number format, international format, country code, paste phone numbers, can I search WhatsApp for leads, no WhatsApp number search, prospects skipped WhatsApp, does WarmySender scrape WhatsApp. Built 2026-08-26. - How to cancel your subscription or delete your account (self-serve cancel + permanent account deletion): https://warmysender.com/documentation/cancel-or-delete-your-account — Plain-language self-serve doc answering "how do I cancel my plan?" and "how do I delete my account?" so customers can do both themselves instead of emailing support (born from trial-expired customers landing on the Billing page with no self-discoverable delete option). Clearly separates the two actions: CANCELLING stops future billing from the Billing page and keeps full access (campaigns, warmup, LinkedIn outreach all keep running) until the end of the current billing period — nothing is deleted, resubscribe anytime; DELETING permanently removes the account and ends access immediately. Opens with a kindly pre-delete check aimed at a real failure: if the dashboard looks EMPTY, or the person is being asked to choose a plan they are certain they already pay for, they may simply be signed in with a DIFFERENT EMAIL ADDRESS than the one they subscribed with (work vs personal address, a different spelling, or an address that forwards into the same inbox) — everything is safe under the other address. How to check without deleting anything: compare the address in Settings against the address on the billing receipt or card statement; if they differ, use the "Try another email address" option on the sign-in screen to have a sign-in code sent to the other address, and sign in there. Cancel steps: Billing page → find current plan + the date the current period runs to → Cancel Subscription (the button reads "Cancel Trial" during a free trial) → confirm with "Yes, Cancel" → keep full access until the date shown, nothing deleted. Reactivate in one click from the Billing page before the period ends, or subscribe again any time after. LinkedIn seats are billed separately and cancelled from the same page via "Cancel Add-On" (LinkedIn accounts stay connected and LinkedIn campaigns keep running until the period ends, then accounts disconnect and those campaigns stop); the relationship is one-directional — the LinkedIn add-on can be cancelled ON ITS OWN while the main plan keeps running, but cancelling the MAIN PLAN also cancels the LinkedIn add-on, because the add-on requires an active plan behind it. The Instagram add-on behaves the same way and is cancelled from the same page. Delete steps: cancel any active paid subscription or add-on seats first (deletion is refused while billing is still live, deliberately, so nobody deletes an account and then keeps seeing charges) → open the Danger Zone (available in TWO places — Settings → Danger Zone → Delete Account, AND Billing page → Danger Zone → Delete Account, both the same deletion; the Billing placement matters because trial-expired customers land there and cannot reach Settings) → click Delete Account → type your account email address exactly to confirm (a safety step; the final button stays disabled until the typed address matches) → click Delete my account, which signs you out immediately. If paid time remains, the confirmation window says so and offers to take you to cancel instead — deleting ends the plan now and the remaining paid days are not refunded. What gets removed: account and workspace including team members, every connected mailbox, all campaigns and sequences with their history, all prospects and lists, and all warmup history and settings — permanent and cannot be undone (export prospects, campaign data and analytics as CSV first). Your actual email accounts and your LinkedIn and Instagram profiles are NOT affected — they belong to you and their providers; we simply stop being connected to them. Data timeline: access ends immediately, data deleted within 30 days (billing records and anything else legally required are kept), matching the Terms. 8-question FAQPage-structured FAQ covers cancel-vs-delete difference, whether cancelling loses access right away (no — keeps access to period end), where to delete (both Danger Zones), why typing email is required (accidental-deletion safety), whether to cancel before deleting (yes), exactly what gets removed, the 30-day data timeline, and whether deletion can be undone (no — cancel instead if unsure). Internal links to /billing, /settings, /terms, /refund-policy, /pricing, /documentation/upgrading-your-plan-and-proration, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-07-27. - Stop emailing the same prospects too often — how to set up Audience Exclusion Rules on a campaign so you never contact the same people too often: https://warmysender.com/documentation/stop-emailing-the-same-prospects-too-often — Plain-language self-serve doc answering "how do I stop my campaigns from emailing the same prospect twice?" Audience Exclusion Rules live on the campaign builder's Audience step (right below the option to exclude specific email addresses and domains) and remove anyone who matches BEFORE the campaign sends — they only ever reduce who gets emailed, never increase it, and are OFF by default so existing campaigns are unaffected. Three rules, usable in any combination: (1) Recently contacted — skip anyone ANY of your campaigns emailed in the last N days (enter 0 to turn off; larger number = wider cooldown window); (2) Already in another campaign — skip the recipients of one or more earlier campaigns you pick, or turn on "Exclude all my previous campaigns" to only ever reach brand-new people; (3) On a specific list — skip everyone on one or more saved lists (tip: keep a single "Do not contact" list and exclude it everywhere for a workspace-wide suppression). When rules combine, a prospect is skipped if they match ANY rule. Also covers bulk-suppressing a big file of addresses or whole domains via Settings → Blocklist → Import CSV (type,value,reason or email/domain columns, de-duplicated and validated with a preview). The same exclusion rules apply when enrolling prospects through the WarmySender API or an AI assistant, and the response reports how many were skipped. Mirrors the common multi-campaign overlap use case (skip anyone emailed in the last 15 days, exclude a prior campaign's recipients, exclude a customers / do-not-contact list). Internal links to /documentation, /settings. Built 2026-06-19. Account safety: exclusion only ever skips sends; pure documentation; zero outbound API surface. - See which recipients opened your emails — where to view per-recipient email opens in WarmySender and how open tracking works: https://warmysender.com/documentation/see-who-opened-your-emails — Plain-language self-serve doc answering "is there a way to see which emails recipients opened, and how do I access it?" Open tracking is built into every cold email campaign and is on by default (a 1x1 tracking pixel records an open when the recipient's email app loads images). Step-by-step access path: Campaigns → open the campaign → Prospects tab → Opens column (per-recipient open count, or a dash if not yet opened) → 'Opened' / 'Not opened' engagement filter → CSV export with 'Opened' (Yes/No) and 'Open Count' columns per recipient. Campaign-wide open rate appears in the campaign stat box (all-time totals) and on the Analytics page (date-ranged engagement funnel Sent → Opened → Clicked → Replied). Honest accuracy caveats: image-blocking or pre-loading (for example Apple Mail Privacy Protection) and corporate security scanners can suppress or inflate raw opens; WarmySender filters known scanners and the sender's own opens and caps Open Rate at 100%; treat Reply Rate as the most reliable interest signal. Clarifies the warmup-vs-campaign boundary: email warmup builds sender reputation and does NOT track recipient opens — open tracking is a campaign feature. Internal links to /documentation/tracking, /documentation/analytics, /documentation/campaign-overview-metrics, /documentation/open-click-rate-over-100, /documentation/accurate-open-and-click-tracking. Built 2026-06-06. Account safety: pure documentation; zero outbound API surface. - Accurate open & click tracking — your own opens don't inflate your stats, plus the per-campaign on/off toggle: https://warmysender.com/documentation/accurate-open-and-click-tracking — Plain-language self-serve doc answering "do my own opens count?", "will checking my sent email in my Sent folder inflate my stats?", "why is my open rate over 100% / lower than other tools?", and "can I turn tracking off?". Core message: WarmySender automatically leaves the sender's OWN opens and clicks out of campaign analytics (e.g. opening a sent email in your Sent folder to re-read it, re-reading it multiple times, forwarding it to a teammate on your own side, or opening it on your phone right after sending from your laptop are all recognized as YOU, not the prospect, and are not counted), AND filters out many obvious automated opens (some recipients' security tools open and load every incoming message — images included — before the person sees it; WarmySender recognizes common patterns such as a single source firing opens for many recipients at once and leaves those out). Net result: open rate and click rate reflect real prospect engagement, not the sender's own activity or background scanners, and the open rate can never exceed 100%. Per-campaign on/off toggle: open & click tracking is a per-campaign setting (on by default) — Campaigns → open the campaign → Settings → Open & click tracking toggle → on (record opens/clicks) or off (stop recording for that campaign) → save; the change applies to that campaign only, replies still arrive in the Inbox when tracking is off, turning it off does not affect deliverability/sequence steps/other campaigns, past recorded opens are kept when you turn it off, and recording resumes from the moment you turn it back on (no gap-fill). Clicks are filtered the same way as opens (your own test-clicks are excluded) and, being a deliberate action rather than a passive image load, are a stronger signal than opens. Honest accuracy note: open rates are approximate by nature even after filtering — privacy features like Apple Mail Privacy Protection can hide real opens (a prospect can read your email without it registering, so true open rate is often higher than any tool shows), and a small amount of scanner noise can remain because WarmySender errs conservatively (would rather let a borderline case through than risk hiding a real prospect open); treat open rate as a directional signal for comparing subject lines/segments and weight clicks and especially replies above raw opens. Warmup boundary: email warmup is a separate system that builds sender reputation and does NOT track recipient opens; this is a cold email CAMPAIGN feature and warmup runs regardless of a campaign's tracking setting. Worked examples included (send-then-proofread-in-Sent = 0 counted; 50-recipient scanner burst leaves out the automated opens; 3 genuine repeat opens = 3; tracking off then prospect opens = 0; privacy-app reader may show 0 despite reading). Schema: Article + FAQPage + HowTo + BreadcrumbList JSON-LD (HowTo encodes the ~20-second per-campaign turn-tracking-on/off flow). Companion to /documentation/see-who-opened-your-emails (where to VIEW opens — this page is the "is it accurate / can I turn it off" page), /documentation/open-click-rate-over-100 (the 100% cap), /documentation/campaign-overview-metrics, and /documentation/analytics. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — open & click tracking is part of the Cold Emailing pillar. Account safety: pure documentation; zero outbound API surface; describes no provider/infra mechanics. Keywords: do my own opens count, sent folder open inflate stats, accurate open tracking, exclude my own opens, turn off open tracking, per-campaign tracking toggle, open rate over 100, why open rate lower, security scanner opens, false opens, are open rates accurate, clicks vs opens vs replies, privacy open tracking, Apple Mail Privacy Protection opens. Built 2026-06-19. - How to use your own tracking domain — put the open/click/unsubscribe links in your cold emails on your OWN domain (e.g. track.yourdomain.com) instead of the shared default, for better deliverability: https://warmysender.com/documentation/how-to-use-your-own-tracking-domain — Plain-language self-serve how-to answering "how do I use my own domain for email tracking links / how do I set up a custom tracking domain / will it break my sends?" What it is: every cold email can carry invisible open + click tracking and a one-click unsubscribe link, and those links sit on a web address; by default that address is a domain shared across customers, and a custom tracking domain swaps in a small subdomain of YOUR domain (e.g. track.acme.com) so the links match the domain you send from. Why it helps: mailbox providers (Gmail, Outlook) treat a mismatch between your sending domain and your tracking-link domain as a small negative signal, so matching them (track.acme.com for a sender on acme.com) looks more trustworthy and improves inbox placement, and recipients only ever see your brand in the links. The single setup step: Settings → Tracking Domains → Add Domain → enter your SUBDOMAIN (recommended: track.yourdomain.com). A bare/apex domain is REFUSED at this point (entering acme.com fails with a message that a tracking domain must be a subdomain, and track.acme.com is offered as a one-click correction) — pointing a bare domain at us would take the customer's own website and email routing offline. Then → WarmySender shows the CNAME target track.warmysender.com → at your DNS provider (Cloudflare, GoDaddy, Namecheap, Google Domains, Route 53, etc.) add ONE record — Type CNAME, Name/Host = track (just the subdomain part), Value/Target = track.warmysender.com, TTL Automatic or 3600 → save (DNS usually propagates in minutes, up to 48h). Verify: Settings → Tracking Domains → Verify — verification confirms the domain is genuinely LIVE end to end (resolves AND securely serves your tracking links), not just that a DNS record exists; success flips the status to Verified and your campaigns immediately start using your domain for open/click/unsubscribe links. Status meanings (these are the exact words shown in the product): "Not checked yet" (added, but nothing has checked it — every domain starts here and STAYS here until the customer clicks Verify; nothing auto-checks a domain before that first click), "Verified · working" (live; campaigns now use your domain, and it is monitored from then on), "Needs attention" (we looked and couldn't reach it — recheck the record and click Verify again). Automatic fallback / your sends are always safe: once Verified, WarmySender keeps checking the domain stays healthy, and if a custom domain is ever removed OR its DNS changes/breaks, your campaigns automatically fall back to our default domain and keep sending without interruption — a broken or removed tracking domain can NEVER stop your emails from going out (worst case: tracking links temporarily use the default domain until you fix yours). Good to know: use a subdomain of the domain you actually send from; you can add more than one (managed per workspace); it's OPTIONAL (you don't need one to send — the default works fine); and it's separate from SPF/DKIM/DMARC authentication (see the Email Deliverability guide). Worked example (acme.com): add track.acme.com → point CNAME at track.warmysender.com → verify → next campaign's links read like track.acme.com; delete the CNAME later and campaigns quietly revert to the default and keep sending. Most common setup failure: at Cloudflare the new CNAME must be set to DNS only (grey cloud, NOT orange/proxied) or verification fails indefinitely; most other DNS providers have no such toggle. Always use a SUBDOMAIN (track.acme.com), never the bare root domain (acme.com) — repointing the root would take the customer's own website and mail routing offline. One-time setup, not per-campaign: once Verified, every campaign in the workspace uses it, including campaigns created BEFORE setup, with nothing to switch on inside a campaign. Self-check: send yourself a test from a tracking-enabled campaign a few minutes after verifying and hover a link — the previewed address should read track.acme.com; only emails sent AFTER verification carry the new links. 8-question FAQPage-structured FAQ covers whether you need one (no — optional), exactly what to add at DNS (one CNAME), why it shows Pending/Error (DNS propagation + recheck name/value), what happens if it's deleted/breaks (automatic fallback, sends never interrupted), whether switching changes past open/click numbers (no — only future emails), reusing one domain across campaigns (yes — all workspace campaigns use it once Verified), the Cloudflare DNS-only/grey-cloud fix, and which subdomain to pick (subdomain not root; track/links/go all fine). Schema: Article + FAQPage + BreadcrumbList JSON-LD. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — a custom tracking domain is part of the Cold Emailing pillar. Internal links to /documentation/tracking-domains, /documentation/deliverability, /documentation/see-who-opened-your-emails, /documentation. Built 2026-07-14. Account safety: pure documentation; zero outbound API surface; describes no infrastructure. Keywords: custom tracking domain, use my own domain for tracking, branded tracking links, cname track, track.yourdomain.com, set up tracking domain, verify tracking domain, tracking links match my domain, improve deliverability tracking domain, tracking domain fallback, white label tracking. - How to see emails that didn't get delivered — where to view the recipients whose cold emails didn't land, and what each non-delivery means: https://warmysender.com/documentation/how-to-see-emails-that-didnt-get-delivered — Plain-language self-serve doc answering "why didn't my email get delivered / what happened to my sends / where do I see bounced or failed emails?" The Delivery Issues view lives in the unified inbox's left sidebar on the Campaigns tab, right next to Campaigns and Needs Reply — so "what happened to my sends?" is answered in the same place you already check for replies. Access path: Inbox → Campaigns tab → Delivery Issues (left sidebar). It's a compact list, one row per affected recipient, showing the recipient's email, which campaign it came from, which mailbox sent it, a plain-language status chip, a short jargon-free reason, and the date. Every non-delivery is sorted into one of TWO clearly-labelled stories: (1) BOUNCED — the recipient's mail server rejected the ADDRESS (it may be inactive, mistyped, or no longer exists); the fix is to correct a typo on the Prospects page or remove the address, which also protects sender reputation. (2) COULDN'T SEND — the receiving mail server turned the MESSAGE away even though the address may be fine (often a temporary spam or connection block, not a bad address); it usually clears up on its own while your other sends keep going, and the best response is to keep Email Warmup running to build sender reputation. Worked example (500 recipients, 12 Bounced + 3 Couldn't send): the 12 Bounced are an audience-quality task (fix or remove those addresses), the 3 Couldn't send are usually nothing to act on and the other 485 sends carry on normally. The healthy, common case is an EMPTY view showing "No delivery issues — all your sends are landing." — seeing nothing here is good news, not a problem. STRICTLY email-only: LinkedIn and Instagram outreach have their own separate signals and never appear here, so an empty view is a clean bill of health for email specifically. 6-question FAQPage-structured FAQ covers why an email didn't get delivered, the Bounced-vs-Couldn't-send difference, whether an empty view means something's wrong (no — it's ideal), what to do about a bounced address, whether a Couldn't-send needs action (usually not), and whether LinkedIn/Instagram problems show here (no). Schema: Article + FAQPage + BreadcrumbList JSON-LD. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — Delivery Issues is part of the Cold Emailing pillar and warmup is the remedy for temporary blocks. Internal links to /documentation/why-was-this-prospect-skipped-bounce, /documentation/my-sending-domain-shows-on-a-blocklist, /blog/deliverability, /prospects, /campaigns, /documentation. Account safety: pure documentation; zero outbound API surface; describes no infrastructure. Keywords: why didn't my email get delivered, what happened to my sends, bounced emails, where to see bounces, failed to send, couldn't send, delivery failures, email didn't arrive, undelivered emails, message rejected, delivery issues view, non-delivered emails, bounce vs blocked. Built 2026-07-17. - How to redeem your AppSumo code (activate your lifetime plan after buying WarmySender on AppSumo): https://warmysender.com/documentation/how-to-redeem-your-appsumo-code — Plain-language redemption-support doc answering "I bought WarmySender on AppSumo — how do I redeem my code / activate my lifetime deal / do I need a password / can I use my existing account?" Redeeming takes under a minute and there's no password to create. FOUR STEPS: (1) in your AppSumo account, open WarmySender and click Activate (some deals label the button Redeem) — this carries your code across for you, so there's nothing to copy or type; (2) you land on a short activation screen and sign in with Google, Apple, or a one-time 6-digit email code (no password); (3) your lifetime plan unlocks instantly — your tier's warmed and cold mailboxes, monthly sending allowance, leads, and email verifications are all ready right away; (4) first time in, take the 60-second product tour, connect a mailbox, and switch on warmup. EXISTING ACCOUNT: sign in with your existing WarmySender account on the activation screen and your code links to it — your mailboxes, campaigns, warmup history, and prospects stay exactly where they are; one code links to one account and going through activation twice never doubles anything up. CHANGING TIER: managed on AppSumo — move up or down a tier from your AppSumo account and your WarmySender plan updates automatically to match, with nothing to re-activate on our side. WHICH EMAIL: use any email you like (you're not tied to the one used on AppSumo); if you already have an account, sign in with it so everything stays in one place. REFUNDS: if you refund your purchase on AppSumo, your WarmySender access ends once the refund is processed. WHAT'S INCLUDED: a full WarmySender plan — email warmup on a set of mailboxes, cold email campaigns with a monthly sending allowance, a built-in B2B leads database, and email verification; higher tiers include more mailboxes, more sending, more leads, and more verifications, plus room for extra workspaces and teammates. LinkedIn and Instagram outreach are OPTIONAL PAID ADD-ONS you can add anytime from inside the app (not part of the AppSumo plan). 6-question FAQPage-structured FAQ covers whether you need a password (no — Google/Apple/one-time email code), adding a code to an existing account (yes — it links), upgrading or downgrading a tier (do it on AppSumo — updates automatically), which email to use (any), what a refund does (access ends once processed), and whether LinkedIn/Instagram are included (optional add-ons). Schema: Article + FAQPage + BreadcrumbList JSON-LD. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel. Internal links to /documentation/getting-started-product-tour, /blog/deliverability, /blog/cold-email, /documentation/email-verification-limits-and-credits, /documentation. Account safety: pure documentation; zero outbound API surface. Redemption-support content, not a lifetime-deal sales page; no specific tier prices. Keywords: redeem appsumo code, activate appsumo, how to redeem appsumo, appsumo activation, appsumo lifetime deal, activate my code, appsumo tier, upgrade appsumo tier, stack codes, appsumo refund, appsumo login, do I need a password appsumo. Built 2026-07-19. - See opens and clicks by email variant (A/B) — which recipient received each variant, and per-variant open/click numbers: https://warmysender.com/documentation/see-opens-and-clicks-by-variant — Plain-language self-serve doc answering "how can I know which client received each variant of a campaign, and where do I see clicks per variant?" Two surfaces: (1) Sequence tab — expand a multi-variant step to see one row per variant (A, B, C…), each with Sent, Opened, Clicked, and Replied counts and percentages (the Clicked column sits right next to Opened); the step header row shows combined totals across variants. (2) Prospects tab — a Variant column shows which variant each recipient was sent (A, B, C…), positioned right before that recipient's own Opens and Clicks columns, so engagement reads per person, per variant; a dash means the recipient hasn't been sent into a variant step yet. The Prospects CSV export includes a Variant column alongside Opened, Open Count, Clicked, and Click Count for every recipient, so you can pivot opens and clicks by variant in a spreadsheet. Variant assignment is sticky per recipient across the sequence so the numbers stay consistent. These columns appear for cold email and the email side of multichannel campaigns with open/click tracking on (on by default). Internal links to /documentation/ab-testing, /documentation/tracking, /documentation/see-who-opened-your-emails. Account safety: pure documentation; zero outbound API surface. Built 2026-06-19. - Upgrading or changing your plan, and how proration works (what you pay today when you upgrade mid-cycle): https://warmysender.com/documentation/upgrading-your-plan-and-proration — Plain-language self-serve doc answering "how does upgrade pricing work / will I be charged a full extra month to upgrade / is there a way to pay only the prorated difference between my current plan and the new one?" Core explanation: upgrades take effect immediately, and mid-cycle you pay ONLY the prorated difference (the gap between your old plan and your new plan, counted just for the days remaining in your current billing cycle) on your card today — never a duplicate full month — then the new plan's normal monthly price on your usual billing date (your billing date never changes, only the plan and price going forward). Worked example: on Pro ($14.99/mo) upgrading to Enterprise ($69.99/mo) about halfway through the cycle, you pay roughly $27 today (the difference for the days left), then $69.99/mo from your next billing date; the exact amount depends on how many days remain when you upgrade (earlier in the cycle = larger, later = smaller). If the card on file can't be charged for the difference, nothing is half-applied — your plan stays exactly as it was until payment is sorted, so you never end up partially upgraded. Downgrades to a smaller plan apply the value you'd already paid as a credit toward your next invoice rather than a refund to your card. Where to do it: open the Billing page, pick the plan, and review the summary (it shows exactly what you'll pay today and your new monthly price) before confirming. 6-question FAQPage-structured FAQ covers whether upgrading charges a whole extra month (no — only the prorated difference), whether the billing date changes (no), how the difference is calculated, what happens if the card is declined (plan unchanged until sorted), where a downgrade "refund" goes (credit to next invoice), and seeing the amount before confirming (yes). Internal links to /billing, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-06-18. - What happened to the Business plan? (the Business plan has been discontinued; existing customers keep it): https://warmysender.com/documentation/what-happened-to-the-business-plan — Plain-language self-serve doc answering "where did the Business plan go / can I still sign up for Business / I'm on Business — does this affect me?" Core explanation: WarmySender now offers 3 plans — Pro, Enterprise, and Ultimate. The Business plan ($29.99/month) is no longer available to new customers. Customers already on the Business plan keep their plan, their pricing, their mailbox cap, their workspaces, and every feature exactly as before — nothing changes for them, including renewals. New customers choose Pro (for solo founders and small teams), Enterprise (for agencies and high-volume senders), or Ultimate (for power users running large multi-account outreach). For anyone who would previously have picked Business for more mailboxes or multiple workspaces, Enterprise is the next step up from Pro. Account safety: pure documentation; zero outbound API surface. - How to use your existing contacts in a new campaign (reuse contacts you've already added; re-uploading never creates duplicates; "already in your account" is not an error): https://warmysender.com/documentation/reuse-existing-contacts-in-a-new-campaign — Plain-language self-serve doc answering "do I have to re-upload my contacts for a new campaign / will re-uploading make duplicates / it says they're already in my account — is that an error?" Core reassurance: contacts live in your account once and a single contact can be added to as many campaigns and lists as you like; re-uploading the same people reuses the existing contact instead of creating a second copy, so the list stays clean and there are no duplicate sends; seeing "already in your account" is confirmation the contact is there and ready to reuse, NOT an error. Documents the three working paths: (1) Contacts → select with search/filters → Add to campaign → Create a new campaign; (2) Contacts → Add to list (new or existing) → Campaigns → New Campaign → audience step → Add from a list → pick the list; (3) re-import a CSV into a list — people already in your account are matched to their existing contact and added to the list (no second copy, history kept), genuinely new people are added as fresh contacts, and the import summary shows how many were newly added vs already in your account (the "already in your account" count is the safety net working as intended). Explains that a contact stays a single record with one history no matter how many campaigns/lists it joins, that adding to a new campaign never removes it from existing campaigns/lists, and that duplicates in a spreadsheet are merged into one contact before anything sends (so you never email the same person twice from one campaign). 6-question FAQPage-structured FAQ covers re-uploading for every campaign (not needed), whether re-uploading creates duplicates (no), the "already in your account" message (expected, helpful), a contact in multiple campaigns at once (yes), list-vs-campaign difference, and whether reusing a contact keeps its history (yes). Internal links to /documentation#prospect-lists, /documentation#csv-import, /documentation#contacts-crm, /campaigns, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-06-14. - How to apply a cleaned / verified email list to a running campaign without restarting it or double-emailing anyone (the clean list is ready in-app after verification; "Use in campaign" opens the builder with it preselected; changing the list on a live campaign never restarts it and never sends anyone twice; Invalid addresses are set aside): https://warmysender.com/documentation/apply-verified-list-to-campaign-without-duplicates — Plain-language self-serve doc answering "if I put my cleaned list on a campaign that's already running, will it restart, and will anyone get the same email twice?" Core reassurance: after you verify a list, WarmySender automatically gathers the good addresses (Valid + Risky) into a clean, ready-to-use list named after your original with "- Verified" on the end, and sets Invalid ones aside so they're never emailed; for an in-app "Verify a List" run the clean list is created automatically, and for a CSV you uploaded there's a one-click "Create clean list" button that builds the same list. From the verification results you click "Use in campaign" and the campaign builder opens with that clean list ALREADY selected as the audience (no downloading, no re-uploading a trimmed spreadsheet). The key reassurance: changing or adding the list on a campaign that's ALREADY running does NOT restart it and does NOT email anyone twice — everyone already partway through your sequence keeps their exact next step and schedule, and only brand-new addresses (people not already in the campaign) are added and start from step one; this is safe because WarmySender keeps one record per contact and remembers exactly which of your emails each person has already received, so it recognizes and skips anyone already enrolled even when the cleaned list overlaps heavily with the original. The optional "Recently contacted cooldown" in the campaign's Audience step (under Audience Exclusion Rules) skips anyone that ANY of your campaigns already emailed within a chosen number of days — a belt-and-suspenders for spacing out contact across several campaigns when you're reworking lists; it only ever reduces who gets enrolled (never adds anyone), and setting it to 0 turns it off (you don't need it to avoid duplicates within a single campaign — that's automatic). Invalid addresses are set aside, not emailed: only Valid + Risky go into the clean list, Invalid stay marked so campaigns skip them, nothing is deleted. 7-question FAQPage-structured FAQ covers "will switching lists restart my campaign?" (no), "will someone get the same email twice?" (no — already-contacted people are recognized and skipped), "do I need to download and re-upload a CSV?" (no — the clean list is ready in-app), "what happens to invalid addresses?" (set aside, not emailed), "where is the Use in campaign button?" (on the verification results, once the clean list exists), "should I include the Risky addresses?" (yes by default; start Valid-only if extra cautious), and "what does the Recently contacted cooldown do?" (skips anyone any campaign emailed within N days). Internal links to /documentation/what-email-verification-results-mean, /documentation/reuse-existing-contacts-in-a-new-campaign, /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /documentation/safe-daily-cold-email-volume-after-warmup, /campaigns, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-07-11. - See which email templates perform best — where to view per-template open, click, reply, and positive-reply performance in WarmySender: https://warmysender.com/documentation/see-which-email-templates-perform-best — Plain-language self-serve doc answering "which of my saved email templates actually works / where do I compare template performance?" The Analytics → Templates view rolls up real outcomes for every SAVED template, one row each: Sends (how many emails used the template), Open rate, Reply rate (the most reliable interest signal), and Positive reply rate (the share of replies that were interested/warm rather than a decline or out-of-office). Access path: Analytics (left sidebar) → Templates tab → one row per saved template, with the page-level date range (7 / 14 / 30 / 90 days) choosing the window. Honesty guardrail — numbers START AT ZERO and accrue going forward, only once you build campaigns FROM a saved Template; a brand-new template, a template you've never reused, or copy written from scratch in a campaign all correctly show zeros (not a bug). To start collecting numbers, build the next campaign from the saved template (choose it as the step's starting point) and the row populates on its own after it begins sending. How-to-use guidance: save reusable copy as templates, build campaigns from them, then sort by reply rate / positive reply rate and double down on winners. Same open-rate accuracy caveat as open tracking (image blocking / pre-loading like Apple Mail Privacy Protection and corporate scanners can suppress or inflate raw opens; known scanners filtered and open rate capped at 100%; reply rate is the most trustworthy measure). Clarifies the warmup-vs-campaign boundary: template performance covers cold email campaign copy, not warmup. Internal links to /documentation/see-who-opened-your-emails, /documentation/tracking, /documentation/analytics. Built 2026-06-20. Account safety: pure documentation; zero outbound API surface. - Campaign says "Running" but never sends any emails — the PERSISTENT "nothing ever sent" case, whose headline cause is a sequence with every step switched off: https://warmysender.com/documentation/campaign-says-running-but-never-sends-any-emails — Plain-language self-serve doc answering "my campaign has said Running for days and has never sent a single email / the next send time keeps moving but nothing goes out / it says Running but 0 sent and my window is wide open." DISAMBIGUATION FIRST (this is the key routing decision when answering a customer): if they launched only MINUTES ago, this is NOT the right page — a brief Running with 0 sent right after launch is normal paced sending, covered by https://warmysender.com/documentation/campaign-says-running-but-never-sends-any-emails. This page is for the case where it has been HOURS OR DAYS, nothing has EVER been sent, and the "next email ~time" indicator keeps sliding forward. CORE EXPLANATION: every step in a sequence carries its own Enabled checkbox, so a step can be parked without deleting the wording; a switched-off step is greyed out and marked with a Disabled badge. That switch is useful and only becomes a problem in one situation — when NO step at all is switched on. At that point the campaign is working through an empty list: there is no first email to send, nobody is contacted, nothing is scheduled, and it waits indefinitely while the status still reads Running. The campaign is not broken and the contacts are not lost; it has simply been given nothing to do, which is exactly why the next-send time keeps moving without anything going out. HOW IT USUALLY HAPPENS (none of it careless): steps switched off one at a time while polishing wording and the last one never switched back; duplicating a campaign that already had switched-off steps; switching a step off to stop it going out today and then losing track while rebuilding the rest. THE FIX (about a minute): open the campaign → Sequence tab → click the first step you want to run → tick the Enabled checkbox → repeat for the other steps → save. No stopping and re-launching, no rebuilding the sequence, no re-importing contacts — everyone keeps their place and sending begins on the next cycle inside the sending window, with a "Next email ~time" indicator appearing within a few minutes as confirmation. WHAT WE CHANGED so nobody walks into this silently again: launching a campaign with no steps switched on is now BLOCKED with a plain-language explanation; a clear notice appears on any campaign running with no switched-on steps; you get a heads-up at the moment you switch off your last remaining step; and the endless silent waiting is gone. THE SIX LEGITIMATE WAITS, each with how to tell it apart (all normal, none a bug): (1) outside the sending hours or not a selected send day — the next-send time points at the next window open, compared in the CAMPAIGN's time zone not the reader's; (2) today's daily limit already reached — the distinguishing tell is that emails DID go out today and the count merely stopped climbing, whereas switched-off steps mean it never started; (3) spacing between sends — Minutes Between Sends applies per mailbox, so the count IS rising, just slowly, and the next send is minutes rather than tomorrow; (4) no mailbox connected or none selected on the campaign, including a mailbox that has since disconnected; (5) the Start Date is in the future because it was scheduled for later rather than launched now; (6) nobody eligible to email — an empty Prospects tab, every contact showing Suppressed, or contacts with no email address on them (common with LinkedIn-imported contacts). WHAT A HEALTHY CAMPAIGN LOOKS LIKE (the "it's working" checklist): at least one step in the Sequence tab WITHOUT a Disabled badge; a "Next email ~time" indicator showing a real upcoming time (or "First emails sending now…"); a sent count climbing GRADUALLY rather than jumping to the whole list at once (a burst would be the actual problem — it is what lands you in spam); contacts moving through the steps on the Prospects tab; and a next-send time inside the sending window in the campaign's time zone. WORKED EXAMPLE: a 3-step campaign whose author switched off steps 2 and 3 to polish them, then switched off step 1 too meaning to switch it straight back, launches to Running/0-sent for two days with a next-send time that keeps moving, a wide-open window, a healthy mailbox and 240 contacts waiting — all three steps carry the Disabled badge; ticking Enabled on each and saving produces "Next email ~11:14 AM" within minutes, and the 240 contacts pace evenly across the rest of the window with follow-ups running on their original 3-day and 10-day schedule. 7-question FAQPage-structured FAQ covers why-it-never-sends (steps switched off, plus the just-launched disambiguation), how-to-switch-a-step-back-on (Sequence tab → Enabled), why-the-next-send-time-keeps-moving (no work found each cycle), can-I-launch-with-all-steps-off (no — now blocked), how-to-tell-waiting-on-purpose-from-stuck (the next-send indicator plus two separating checks), do-I-have-to-re-launch (no), and whether it applies to LinkedIn/Multichannel (yes, with LinkedIn's gentler pace carrying forward to a following email step). Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — the on/off switch and the "nothing to send, so it waits" behaviour apply across all channels. Internal links to /documentation/campaign-says-running-but-never-sends-any-emails, /documentation/how-campaign-sending-schedule-and-pacing-works, /documentation/how-campaign-sending-windows-and-time-zones-work, /documentation/campaign-says-running-but-never-sends-any-emails, /documentation/why-my-linkedin-imported-leads-arent-getting-emails, /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /blog/cold-email, /blog/deliverability, /blog/linkedin-outreach, /documentation, /support. Account safety: pure documentation; zero outbound API surface; every wait described exists to protect sender reputation, and account safety wins over forcing a send through. Built 2026-08-04. Keywords: campaign says running but never sends, running but nothing is sending, never sent a single email, 0 sent for days, next send time keeps moving, next email time keeps changing, step switched off, step disabled, disabled step badge, enable step checkbox, all steps off, no steps enabled, empty sequence, nothing to send, campaign stuck, campaign waiting forever, why is my campaign not sending at all. - Leads Database Quality — how WarmySender's B2B leads database is served: a fresh pool of contactable B2B people (name, job title, company, work email, LinkedIn) browsable by role, company, industry, and location, with the freshest contacts shown first (newest-first) and confirmed-bad addresses ('Unavailable') filtered out of search entirely. Covers what each email_status label means, the Report-bad-email feature (POST /api/leads/:leadId/report-bad-email), and the cross-customer corroboration policy (≥2 distinct workspaces required within a 60-min window before a bounce flips a lead to Unavailable and removes it from search): https://warmysender.com/documentation/leads-database-quality-and-freshness — Built 2026-05-19, updated 2026-06-07. The platform never re-verifies leads in real time on a search request. 5-question FAQ covers what Extrapolated means, how to report a bad lead, why a lead might appear to vanish from a saved list (it does not — only the status flips, the row stays), report privacy across customers, and the hard-bounce-vs-soft-bounce distinction. - How many leads do I get, and how do lead credits work? — the customer-facing explainer for the leads monthly quota, the daily pace, and purchasable lead credits: https://warmysender.com/documentation/lead-credits-and-daily-limits — Plain-language self-serve doc answering "how many leads do I get per month?", "why can I only save a portion each day?", "does browsing cost leads?", "what are lead credits?", "do lead credits expire?", "how much do lead credit packs cost?", "what happens when I run out?", and "should I buy credits or upgrade?". CORE MODEL: TWO buckets — (1) the PLAN MONTHLY LEADS included with every paid plan (Pro 2,000 / Business 5,000 (grandfathered, existing customers only) / Enterprise 30,000 / Ultimate 60,000), which refresh on the customer's billing anniversary (same for monthly AND annual subs) and are DAILY-PACED: your monthly leads are spread evenly across the month so a portion is available each day, roughly the monthly total divided by 30 (Pro ~66/day, Business ~166/day, Enterprise ~1,000/day, Ultimate ~2,000/day); and (2) PURCHASED LEAD CREDITS (one-time packs that NEVER EXPIRE and SKIP the daily pace). CONSUMPTION ORDER: the plan's daily share (and monthly allowance) is always spent FIRST; only once today's share or the month's allowance is used up do purchased credits draw down, and the credit portion is NOT daily-paced — so credits are the fastest way to keep building a list right now, whether you've hit today's limit or gone past your whole monthly allowance. BROWSING IS FREE + MASKED: searching, filtering, and paging results cost nothing — a lead is only ever spent when you SAVE it to a list or EXPORT it. In search results each email shows masked (partly hidden) and the full address appears once you save/reveal the lead. One lead = one NEW save or export; re-saving an already-saved lead is FREE (never charged twice); records with no email aren't charged. LEAD CREDIT PACKS (one-time, never expire): 10,000 = $15; 30,000 = $39; 75,000 = $79 (best value); 150,000 = $139; 350,000 = $299 — the larger the pack, the lower the cost per lead. HOW TO BUY: open the Leads page from the sidebar, choose Buy credits, pick a pack, check out securely, and the credits are added to your account instantly (balance goes up right away, nothing to schedule or activate). WORKED EXAMPLE: on Enterprise (30,000 leads/month ≈ 1,000/day) a client project lands and you need 2,000 leads today — you save your ~1,000 daily share from the plan, then lead credits cover the remaining ~1,000 instantly, and because credits never expire whatever is left over is waiting for the next project. CREDITS VS UPGRADE: buy credits when your need is occasional (a one-off big list, a client project, a new market) or you want a large list right away and a reserve on hand; upgrade your plan when you save large numbers of leads most months (a higher plan raises your monthly leads and daily share for good and adds more sending volume + mailboxes) — many people do both. WHEN YOU RUN OUT: hit today's share → saving pauses only until it refreshes the next day (monthly allowance untouched); use up the month → saving pauses until your next billing anniversary OR you buy credits / upgrade; browsing stays free and anything already saved stays in your lists. Content includes a per-plan leads table, a daily-pace explainer, a browse-is-free section, a lead-credits section, a credit-packs price table, a how-to-buy walkthrough, a credits-vs-upgrade guide, and an 8-question FAQPage-structured FAQ. Companion to /documentation/leads-database-quality-and-freshness (how the pool is served) and /documentation/find-your-ideal-leads-with-filters (how to narrow it). Internal links to /documentation/leads-database-quality-and-freshness, /documentation/find-your-ideal-leads-with-filters, /documentation/filtering-leads-by-industry, /pricing, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — the lead database feeds all of them. Account safety: pure documentation; zero outbound API surface. Keywords: how many leads per month, leads limit per plan, daily lead limit, why only a portion of leads each day, leads spread across the month, does browsing cost leads, masked emails until saved, buy lead credits, lead credit packs, lead credits price, do lead credits expire, credits skip daily limit, plan leads vs credits, keep going past daily limit, ran out of leads, credits or upgrade, Pro 2000 leads, Business 5000 leads, Enterprise 30000 leads, Ultimate 60000 leads. Built 2026-07-12. Updated 2026-09-01 (plan monthly leads doubled: Pro 2,000 / Enterprise 30,000 / Ultimate 60,000; Business grandfathered at 5,000). - How do I find my ideal leads using filters? — practical how-to for narrowing the built-in B2B lead database down to the exact people you want to reach: https://warmysender.com/documentation/find-your-ideal-leads-with-filters — Plain-language self-serve guide answering "how do I search for my ideal leads / what filters can I use / can I find only verified emails / can I filter by company size?" Core method: open the Leads page and stack additive filters until a live match count shows only the people you want, then save to a list and launch a campaign. Documents the six filters WarmySender is strongest on: (1) Location — country, then state/province, then city, for regional targeting; (2) Job title — a free-text search for the role wording (the richest, best-populated field), with tips to prefer whole words over abbreviations ("vice president" not "VP", "human resources" not "HR") and to start broad then tighten; (3) Seniority — the level of the role regardless of exact wording (C-level, VP, Director, Head, Manager); (4) Department/function — Marketing, Sales, Engineering, Finance, HR and more; (5) Has email — only contacts with an email address on record; the lead database is a directory of contact details, NOT a live deliverability check, so there is no "verified" filter — save the list and run it through the Email Verifier before launching; (6) Has LinkedIn — only contacts with a LinkedIn profile, ideal for multichannel (email + LinkedIn) outreach. Three worked example searches: "Marketing VPs in Canada with a verified email and a LinkedIn profile" (Location=Canada + Department=Marketing + Seniority=VP + Verified-email-only + Has-LinkedIn), "Founders and CEOs of US companies with a verified email" (Location=United States + Seniority=C-level + Verified-email-only), and "HR managers in a specific city" (Location country→state→city + Department=HR + Seniority=Manager). HONEST about the gap: WarmySender does NOT offer reliable company-size (headcount) or revenue filters because that information is available for only a small fraction of records, so filtering on it would hide most contacts and return a misleadingly small list — those filters are deliberately left out rather than quietly drop good leads. 7-question FAQPage-structured FAQ covers which filters exist, combining several at once, finding only verified emails, the Seniority-vs-Job-title difference, the company-size/revenue gap, why filter by Has-LinkedIn, and what to do after filtering (save to list → create campaign or export CSV). Internal links to /documentation/leads-database-quality-and-freshness, /documentation/what-email-verification-results-mean, /faq/deliverability, /leads, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-06-20. - Bounce Fanout Protection — what happens when a prospect bounces in one of your mailboxes and the platform skips the same prospect in your OTHER mailboxes (same workspace) to protect your sending domain reputation: https://warmysender.com/documentation/why-was-this-prospect-skipped-bounce — Plain-language self-serve doc covering bounce-fanout (the structural safeguard that prevents a single bad address from cascading into a multi-mailbox spam-trap signal), the sender-side-safety guard (// — we ONLY fan out on confirmed RECIPIENT bounces, not on sender-auth failures, sender-DNS errors, or uncorroborated single-sender bounces), the per-prospect status change customers see (Bounced — see Inbox: — with reason carrying the SMTP bounce code on the originating mailbox and "bounced in {originating-mailbox}" on the fanned-out ones), how the dashboard Sent/Bounced counters behave during fanout (origin mailbox's Bounced increments, fanned-out mailboxes' Bounced does NOT increment — keeps platform-wide bounce metrics honest), what to do about it (the prospect is permanently excluded from this campaign in your workspace — to re-add: external verify, manually re-import), and the anti-phishing guarantee that WarmySender will NEVER email you asking to reconnect a mailbox. 6-question FAQPage-structured FAQ covers the multi-mailbox skip, warmup unaffected, no un-skip button (deliberate guardrail), the kept-honest reporting design, the sender-vs-recipient bounce distinction, and the anti-phishing email guarantee. Built 2026-05-19. Companion to Agent D's bounce-fanout server-side change. Account safety: pure documentation; zero new outbound API calls described or implied. - Why your new LinkedIn account starts slow — what to expect week by week as a brand-new LinkedIn account ramps up, and why free accounts send note-free connection requests: https://warmysender.com/documentation/why-your-new-linkedin-account-starts-slow — Plain-language self-serve doc covering three things: (1) a brand-new or recently connected LinkedIn account sends invitations gradually over its first few weeks (small handful per day in week 1, growing through weeks 2-4, full steady pace after about a month) because LinkedIn flags fresh accounts that send high volume too soon — this is normal and protects the account; (2) short pauses that resume on their own are a normal part of natural pacing and need no action, distinct from a reconnect-required banner; (3) free LinkedIn accounts can send only a small number of PERSONALIZED (with-note) invitations per month but many more plain connection requests, so WarmySender sends note-free connection requests on free accounts to keep volume healthy and the account safe, saving the personalized pitch for the follow-up message after the prospect accepts — to attach notes to invitations at scale, upgrade LinkedIn to Premium or Sales Navigator. 6-question FAQPage-structured FAQ covers "why are my invites sending slowly?", "why didn't my personalized note get sent?", "is something wrong if I see a pause?", "how do I send invites faster?", "will the slow start hurt my results?" (no — it protects them), and "do I need to change any settings?" (no — the ramp is automatic), plus a 6-question "People also ask" extension. Account safety: pure documentation; zero outbound API surface. Companion to /documentation/linkedin-sending-limits-and-account-tiers and /documentation/how-to-personalize-linkedin-messages. Built 2026-06-01. - Why won't my LinkedIn account connect? (and what to try) — reassurance + how-to for the "I tried to connect my LinkedIn account and it didn't go through / I got an error connecting LinkedIn" moment: https://warmysender.com/documentation/why-wont-my-linkedin-account-connect — Plain-language self-serve doc whose short answer is: a connection attempt that doesn't complete is almost always a BRIEF BUSY MOMENT that clears within a few minutes, and it costs you NOTHING — a failed attempt never uses up your LinkedIn seat, never creates a charge, and never affects your LinkedIn account, connections, or standing on LinkedIn; there is no half-connected state to clean up. Core guidance: when an attempt doesn't go through you'll see a SHORT COUNTDOWN before the next try — wait for it to finish and try ONCE, rather than tapping connect repeatedly (rapid repeated attempts can briefly hold things up, so the calm approach is the quick approach). Explains the TWO WAYS TO CONNECT and steers to the safest: (1) the BROWSER-COOKIE method — the RECOMMENDED default for almost everyone because it is the calmest option for the account (it reuses the sign-in the browser already holds, so LinkedIn does not need to run an extra security check and there is no verification code to chase); connects using a small sign-in value from your browser called li_at, with three tips that make it work: use a FRESH value (copy it right before pasting, while signed in to LinkedIn in that browser), copy the WHOLE thing (a long string, first character to last), and NO SPACES OR QUOTES (a stray space or quotation mark is the most common reason it doesn't take); (2) EMAIL + PASSWORD — works too, just less smooth, because LinkedIn often runs its usual security check and may pop up a verification code, which is normal. (CORRECTED 2026-08-12 — this entry previously described THREE methods and named a one-click "Sign in with LinkedIn" as the recommended default. There is no such option: the product offers exactly the two methods above, and the browser-cookie method is the recommended one. Recommending a non-existent one-click flow also steered people away from the safest method.) VERIFICATION CODES / 2FA explained calmly: if LinkedIn asks for a code that is LinkedIn's normal security check (confirming it's you, like signing in on a new device), NOT an error — have your phone/email/authenticator handy, enter it promptly because codes expire fast, request a new one if it lapses, and note not every connection asks for one. APPROVE-IN-THE-APP (added 2026-08-12): sometimes LinkedIn sends NO code at all and instead pushes a prompt to the LinkedIn app on the customer's PHONE. The screen then reads "Approve this sign-in on your phone" and THERE IS NO CODE TO TYPE — the approval itself is the whole step: open the LinkedIn app, find the prompt asking whether you just tried to sign in, and tap "Yes, it's me". Leave the WarmySender screen open; it watches for the approval and CLOSES ITSELF the moment LinkedIn confirms, so nothing needs pressing afterwards. There is an on-screen countdown because LinkedIn keeps these requests open for about FIVE MINUTES; if it lapses nothing is lost and the seat is unaffected — just start the connection again for a fresh prompt. If the prompt does not appear, check you are signed in to the LinkedIn app with the same account. The browser-cookie method usually skips this step entirely. CHECKLIST if it keeps failing (in order): (1) sign in to linkedin.com in a normal browser tab first and COMPLETE anything LinkedIn shows you (a prompt or security check) — a connection can't finish while LinkedIn is waiting for you to clear something; (2) then come back and try again, ideally with the one-click Sign in with LinkedIn method; (3) make sure you're connecting the RIGHT account (the one you're actually signed in to); (4) wait for the countdown between tries. WHEN TO CONTACT SUPPORT and what to include: email hello@warmysender.com with roughly the TIME it happened (a timestamp helps) and WHICH METHOD you were using. 7-question FAQPage-structured FAQ covers "did a failed connection use up my seat or charge me?" (no), "should I keep retrying?" (wait for the countdown, then try once), "which method should I use?" (start with one-click Sign in with LinkedIn), "LinkedIn asked for a verification code — is that a problem?" (no — normal security check), "my connection keeps failing — what should I check?" (sign in to linkedin.com first, complete prompts, retry with one-click), "is my account at risk after a failed connection?" (no), and "how do I get help?" (email with time + method). Internal links to /documentation/why-your-new-linkedin-account-starts-slow, /documentation/why-is-my-linkedin-account-disconnected, /documentation/linkedin-seats-after-a-failed-payment, /documentation/how-warmysender-protects-your-linkedin-account, /linkedin, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — connecting an account powers the LinkedIn Outreach pillar. Account safety: pure documentation; zero outbound API surface; a failed connection never uses up a seat or creates a charge. Keywords: LinkedIn won't connect, can't connect LinkedIn account, LinkedIn connection failed, error connecting LinkedIn, Sign in with LinkedIn, browser cookie li_at, li_at not working, LinkedIn verification code, LinkedIn 2FA, connection keeps failing, did a failed connection use my seat, retry cooldown, is my LinkedIn account safe. Built 2026-07-22. - How your warmup daily volume is decided (THE CANONICAL warmup-volume answer — absorbs the eight-URL cluster that used to answer this one question from eight angles): https://warmysender.com/documentation/how-your-warmup-daily-volume-is-decided — Plain-language self-serve doc and the canonical landing page for "why is my warmup daily limit lower than my target", "how many warmup emails per day", "how does warmup ramp up", "why did my warmup volume go down", "why does warmup send so few emails in the morning" and "slow warmup progress". CORE ANSWER: your warmup target is what you are aiming at; today's volume is what the mailbox has earned. A brand-new sending domain starts at ONE warmup email a day and climbs to 40 A DAY AROUND THE SIXTH WEEK OF SENDING; a mailbox that is at least 14 days old with at least 7 days of real sending, spam placement under 2% and bounces under 1%, in maintenance warmup, earns its FULL CONFIGURED TARGET up to 120 A DAY — the highest warmup volume run from a single mailbox, and a hard stop. SENDING DAYS, NOT CALENDAR DAYS: the ramp only advances on days the mailbox actually sends, so a mailbox that could not sign in for four days is four days behind the calendar; pausing therefore does NOT reset progress (a mailbox that completed 12 sending days resumes on day 12), though volume steps back up over about a week after a long gap. WEEK-BY-WEEK TABLE (new domain, normal ramp speed, target 40): week 1 = 1 rising to 7/day · week 2 = 9 to 15 · week 3 = 15 to 21 · weeks 4-5 = 23 to 35 · week 6 onward = 40, full speed. PER-MODE TABLE (start → ceiling → roughly when): New Domain 1 → 40, around sending day 40 · New Mailbox 3 → 60, around day 58 · Dormant 3 → 40, around day 38 · Maintenance 15 → 30 (or the full earned target), around day 16 · Recovery 5 → 30, around day 26. RAMP SPEED changes the step size, not the destination: conservative +1, normal +2, aggressive +3 per two sending days — aggressive never raises the ceiling. EVERY REASON the product can give for today's number, in the order it prefers them: the domain is not signing its email yet (add the signing record) · too much warmup mail is landing in spam · placement is under review · restoring volume after a pause · waiting to earn a higher volume · the current warmup mode caps volume · still ramping up · sharing the domain with other mailboxes · spread across the day (pacing, not a reduction) · at the highest volume we run (120) · target reached. WHY VOLUME GOES DOWN: placement slipped, the mode changed, you lowered the target (a hard ceiling, effective immediately), or more mailboxes joined the same domain and now share its volume. Reaching your target, a quiet day and a weekend do NOT lower it — warmup runs every day. WHY EMAILS TRICKLE THROUGH THE DAY: a day's allowance sent in one burst looks like automation, so it is paced across your sending hours — the daily total is unchanged, and checking the count at 9am is the most common false alarm. Warmup and cold campaign emails SHARE one per-mailbox daily budget, so 40 warmup emails leave 40 fewer for campaigns. HONEST NOTE: no mailbox provider publishes a day-by-day warmup schedule, so this curve is presented as OURS — what WarmySender enforces — never as provider guidance. Three real comparison tables + a 6-question FAQPage-structured FAQ + Article + BreadcrumbList JSON-LD. Internal links to /documentation/how-many-cold-emails-can-i-send-per-day, /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/why-your-warmup-can-pause, /documentation/what-is-my-mailbox-warmup-score, /documentation/why-is-my-warmup-bounce-rate-high, /documentation. Channels: Email Warmup (supports Cold Email). Account safety: every ceiling on the page exists to protect placement, and none of them can be raised by a customer or an AI agent. Keywords: warmup daily volume, warmup daily limit lower than target, how many warmup emails per day, how warmup ramps up, warmup volume went down, slow warmup progress, warmup spread through the day, few warmup emails in the morning, warmup mode ceiling, sending days not calendar days, 120 a day, earned target. Built 2026-09-06 as the canonical replacement for eight retired URLs. - Why adding sending days didn't increase my volume right away (and the one-click Rebalance that fixes it) — for the common cold-email confusion "I changed my campaign from weekdays to every day / widened my sending window and my volume went DOWN, not up": https://warmysender.com/documentation/why-adding-sending-days-didnt-increase-volume — Plain-language self-serve doc explaining that when a campaign starts, WarmySender lays out a specific send day + time for each prospect's first email, built from the schedule in force at that moment; when you later WIDEN the schedule (add days, stretch the daily window, or change the sending time zone), the already-lined-up prospects KEEP their original send dates, so the days you just opened start out nearly empty while your existing days still hold the queue — which is why "I added days but sending didn't go up" happens (the extra capacity is there, the existing queue just hasn't moved into it on its own). The fix is a one-click Rebalance offered for that campaign right after you save a wider schedule: it spreads your queued FIRST emails forward into the newly-opened days, shows a preview first (how many emails it will bring forward + how sending will look across the next several days) so you confirm before anything changes, and follows firm account-safety rules — it ONLY pulls sends EARLIER, never later (an already-scheduled email is never pushed to a later date; worst case it stays put); it NEVER exceeds your campaign's normal daily amount (it spreads the queue across MORE days rather than cramming more into one day); it ONLY moves the very first email to each prospect (every follow-up keeps its planned gap after the previous message, so sequence timing is never shortened); and it respects the campaign end date. Core deliverability point: WarmySender ALWAYS spreads sends across the day and across allowed days with natural gaps and never bursts, because sending a big batch of cold email at once is one of the fastest ways into spam — so "more days" buys a steadier, gentler daily pace (the same sending spread over more days, no single-day spike), not a sudden surge; the same applies to widening the daily time window (more room to spread, not more at once). Worked example: a Mon–Fri campaign with a large pile of first emails stacked on the coming Monday and the just-enabled Saturday/Sunday empty → click Rebalance → the Monday pile is spread forward into Saturday and Sunday up to the normal daily amount with natural gaps, Monday drops back to a normal day, and prospects waiting behind the pile get reached sooner — with no day over the normal pace and no email delayed. If you don't click Rebalance nothing breaks: the new days simply fill in gradually as the campaign keeps enrolling/sending; Rebalance just puts them to work immediately. Note for "how do I actually send MORE per day": adding days spreads volume for a steadier weekly total, but to raise the per-day number specifically the safe levers are connecting more sending mailboxes to the campaign (each adds its own daily allowance) and letting newer mailboxes finish warming up — WarmySender caps each mailbox to safe daily limits on purpose. 8-question FAQPage-structured FAQ covers "I added days but volume didn't go up — is it broken?" (no — queued emails keep their dates; use Rebalance), "what does Rebalance do?", "is it safe / will it burst?" (no — stays within your daily pace, spaced out), "will it mess up follow-up timing?" (no — only the first email moves), "could it ever delay an already-scheduled email?" (no — earlier-only), "what if I don't click Rebalance?" (fine — fills in gradually), "I widened my time window instead of adding days — same thing?" (yes), and "best way to actually send more per day?" (more mailboxes + warmup). Internal links to /documentation/how-do-i-send-follow-ups-in-the-same-email-thread, /documentation/how-your-warmup-daily-volume-is-decided, /blog/deliverability, /campaigns, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-06-14. - How do I set the language of my warmup emails? — choose the language your warmup emails are written in (English, Spanish, French, German, Portuguese, Italian, Dutch), written natively rather than machine-translated: https://warmysender.com/documentation/set-your-warmup-language — Plain-language how-to for the per-mailbox Email Language setting. Warmup emails are composed NATIVELY in the chosen language — written directly in it, not written in English and run through a translator — so they read like a real person wrote them (native wording avoids the stilted phrasing that makes automated mail look automated). Set it under Warmup → the mailbox's settings (gear) → Email Language; the live Example Warmup Emails card previews real sample subjects and bodies in the selected language before you save. Seven languages: English, Spanish, French, German, Portuguese, Italian, Dutch. It's a PER-MAILBOX setting, so different mailboxes can warm up in different languages — ideal for multi-market outreach. Best practice: match the warmup language to the language you actually send campaigns in, so your warmup activity is representative of how the mailbox is really used. The setting applies to newly generated warmup mail; changing it never resets your warmup, changes your daily volume, or restarts your ramp. 6-question FAQPage-structured FAQ covers which languages are available, where to change it, whether it's machine-translated (no — native), whether to match your sending language, when it takes effect (and that it never resets warmup), and per-mailbox languages. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — warmup is the foundation the others build on. Internal links to /documentation/how-your-warmup-daily-volume-is-decided, /documentation/how-your-warmup-daily-volume-is-decided, /faq/email-warmup, /documentation. Account safety: pure documentation; zero outbound API surface. Keywords: warmup language, set warmup email language, native language warmup, Spanish French German Portuguese Italian Dutch warmup, not machine translated, example warmup emails preview, per-mailbox language, multi-language warmup. Built 2026-07-24. - Format your emails: fonts, sizes, spacing and colors — the complete email editor toolbar and when NOT to use it: https://warmysender.com/documentation/format-your-emails — Plain-language how-to for formatting campaign emails. TOOLBAR: Undo/Redo; text style (Paragraph, Heading, Subheading, Quote); font (Default = the recipient's own font, plus Arial, Helvetica, Georgia, Times New Roman, Verdana, Tahoma, Trebuchet MS, Courier New); font size in nine steps from 11 to 24 px; line spacing (Compact, Normal, Relaxed); text color and highlight; bold, italic, underline, strikethrough; bullet and numbered lists with decrease/increase indent; align left/center/right; link (works with or without selected text); image (public HTTPS address, alt text, width); divider; variables; Insert signature; clear formatting; HTML code view; Send test; Preview. A floating mini toolbar follows your text selection. SHORTCUTS: Ctrl/Cmd+B, +I, +U, +K for a link, Ctrl/Cmd+Z and Shift+Z for undo/redo; Enter = new paragraph, Shift+Enter = line break inside the paragraph (line spacing is a third, separate thing — it controls the air WITHIN a paragraph). PASTING from Word, Google Docs or Gmail keeps basic formatting and drops the hidden clutter. DELIVERABILITY: a status hint reads 'Plain look' or 'Styled'; styled emails (chosen fonts, sizes, colors, images) look like newsletters and are likelier to land in the Promotions tab, while plain-looking mail reads like a colleague wrote it and gets more replies — which is why the default is the recipient's own font with no styling. Every campaign email also carries an automatic plain-text version derived from the formatting, which helps inbox placement; nothing to turn on. ADVANCED: paste a full custom HTML layout (tables, designer templates) in HTML code view — it is preserved as written and the email reopens in code view; formatting buttons are disabled there on purpose. SIGNATURE: each mailbox has its own, edited with a trimmed-down version of the same toolbar under Mailboxes → the mailbox's settings → Signature; insert it with the Insert signature button or the {{signature}} variable, and a rotating campaign gives every recipient the sending mailbox's own signature. AI AGENTS: Claude, ChatGPT, Cursor, Codex, OpenClaw, Hermes Agent or any agent that speaks MCP can write and format the same emails in plain language (font family, font size, color, background color, line height, indent, alignment — or plain text), and can list saved templates and build a campaign step from one; an agent NEVER sends a message itself and can NEVER raise a limit, and the scheduler paces every email inside safe caps and the gradual ramp regardless of who set it up. 7-question FAQPage-structured FAQ covers changing font and size, Enter vs Shift+Enter, whether formatting causes Promotions placement, pasting from a word processor, using your own HTML template, signatures per mailbox, and agent formatting. Internal links to /documentation/why-follow-ups-stay-in-the-same-thread-and-inbox, /documentation/connect-your-ai-agent, /faq/deliverability, /documentation. Keywords: email formatting, change font in cold email, text size, line spacing, text color, highlight, bullet list, indent, insert image email, email signature editor, HTML email template, plain text email, Promotions tab, keyboard shortcuts, paste from Word. Built 2026-09-02. - What our deliverability numbers mean (and what they don't) — the difference between warmup placement and campaign placement: https://warmysender.com/documentation/what-our-deliverability-numbers-mean — Plain-language doc answering "can I see whether my CAMPAIGN emails land in Primary, Promotions or spam?". Short answer: the Inbox Rate Trend and Mailbox Health Matrix on Analytics > Deliverability are built ENTIRELY from warmup mail — messages exchanged between verified mailboxes in the warmup network — so they measure a SENDING ACCOUNT'S REPUTATION over time, not where any individual campaign email landed. Explains why campaign placement is not observable by any sending tool: a campaign email travels to a real prospect's mailbox we have no access to, and once the recipient's mail server accepts it, whatever happens next (inbox, spam folder, category tab) happens inside an account we cannot see — a property of email itself, not a reporting gap. Honest caveat on tabs: mail providers do not reveal which tab a message was filed under, so warmup mail sorted into Promotions or Updates is counted as inbox; read "inbox" as "not in the spam folder" rather than "in the Primary tab". Lists what IS visible per campaign: Bounce Rate and Delivery rejection rate on the campaign page; plain-language rejection reasons including "Recipient mail server rejected as spam" and "Your sending provider rejected the message as spam before it left your mailbox" (real spam feedback, covering mail refused outright at send time); automatic pausing of a campaign whose every send is being refused on content or policy grounds, with a fix guide and prospect restore (resuming is the customer's call, not automatic); and opens, clicks and replies. Neutral note that seed-panel placement testing is a SEPARATE class of tool that sits alongside warmup — WarmySender has no test panel and runs no test sends, and no roadmap date is implied. Answers the support question "where can I see how many emails are landing in inbox?" in three named places: the Inbox placement card on every email campaign's own page (warm-up-measured inbox vs spam over the last 7 days across that campaign's sending mailboxes, with a 'Not enough warm-up mail yet' state until enough checked mail exists), Analytics > Deliverability for the per-mailbox trend and matrix, and the Warmup page's per-mailbox Inbox Rate column. Also documents the do-it-yourself placement check: Send test now delivers the campaign email exactly as a prospect receives it — same subject, opt-out footer and headers, no test label — so sending it to an address you own (ideally at your prospects' provider) and looking in the inbox and spam folder is a fair one-message preview. Internal links to /documentation/understanding-your-warmup-inbox-rate, /documentation/why-emails-are-being-rejected, /analytics. Account safety: pure documentation; zero outbound API surface. Built 2026-08-19. - Understanding your warmup Inbox Rate — what the number means and why it's accurate: https://warmysender.com/documentation/understanding-your-warmup-inbox-rate — Plain-language self-serve doc explaining the warmup "Inbox Rate" metric and its companion "Verified X% of sent" coverage indicator. Inbox Rate = warmup emails that landed in the inbox ÷ warmup emails we could verify (inbox + spam), shown as a percentage — a quality measure of placement among confirmed mail. "Unverified" emails (placement not yet scannable — message in transit, receiving mailbox still syncing, not yet scanned) are excluded from the Inbox Rate denominator entirely: never counted as inbox, never counted as spam, so unverified mail neither helps nor hurts the rate. "Verified X% of sent" = verified (inbox + spam) ÷ total sent — coverage, i.e. how large/representative the sample behind the rate is; it climbs through the day as more mail is scanned. Worked example: 100 sent, 90 verified, 89 inbox + 1 spam → Inbox Rate 89 ÷ 90 = 98.9%, Verified coverage 90 ÷ 100 = 90%. Explains why the headline summary number (across all mailboxes) and the per-mailbox table numbers now always agree — both use the identical inbox/(inbox+spam) formula with unverified excluded everywhere (the per-mailbox number was always the honest one; the headline previously dragged lower by counting unscannable mail against the rate). What a healthy result looks like (high Inbox Rate in the high 90s + low spam share + some unverified mail being normal) and the durable levers to improve it (SPF / DKIM / DMARC, natural content, let warmup keep running). 6-question FAQPage-structured FAQ covers how the rate is calculated, why some emails are unverified, whether unverified mail lowers the rate (no), what "Verified % of sent" means, why the two numbers used to differ, and what a healthy Inbox Rate is. Internal links to /documentation/how-your-warmup-daily-volume-is-decided, /faq/email-warmup, /blog/deliverability, /mailboxes. Account safety: pure documentation; zero outbound API surface. Built 2026-06-03. - Why is my spam rate high when my spam folder is empty? — the answer to the single most common "your number must be wrong" report about warmup: https://warmysender.com/documentation/why-is-my-spam-rate-high-when-my-spam-folder-is-empty — BOTH observations are correct, because they measure OPPOSITE DIRECTIONS. Spam Rate is a SENDING score: the share of the warmup a customer's mailboxes SENT that landed in the spam folder of the people RECEIVING it. The customer's own folders show the other direction (mail arriving to them), so their own spam folder can never confirm or refute the number — the mail was never addressed to them. SECOND, INDEPENDENT reason the folder looks empty: when warmup DOES land in a customer's spam folder, WarmySender moves it to the inbox automatically (that rescue is what teaches the provider the mail is wanted), so the folder is emptied for them, usually within minutes. Either fact alone explains an empty folder; together they mean 'I looked and it's empty' is not evidence. THIRD: the figure records where each email landed FIRST, before any rescue — deliberately, because the first landing is the honest reputation signal and folding our own clean-up into it would show a perfect number at exactly the moment placement started failing. How to check the rate properly instead: sample size (a rate built on a handful of emails swings 20 points on one message), the trend over a week rather than one day, and sending authentication — especially whether the domain's SPF lists the service the mail actually leaves through, which is commonly NOT the provider handling incoming mail. Also explains that a high spam rate automatically lowers that mailbox's daily volume until placement recovers, that the two always move together, and that changing the warmup mode by hand will not override the protection. 7-question FAQPage-structured FAQ. Written after a customer reported the dashboard as broken on the strength of an empty spam folder — and after we found our own spam-rescue page had been telling customers the opposite. Account safety: pure documentation; zero outbound API surface. Built 2026-08-19. - Why reconnecting doesn't fix this mailbox — what to do when a mailbox asks to be reconnected again within minutes of being reconnected: https://warmysender.com/documentation/why-reconnecting-does-not-fix-this-mailbox — the sign-in is NOT the problem. In this state the customer's email provider has switched OFF incoming access for that specific mailbox, the permission that lets an approved outside application read mail arriving in it. The sign-in is accepted; the refusal happens AFTERWARDS, at the moment reading is attempted — which is why a new App Password, a fresh sign-in, or deleting and re-adding the mailbox all fail identically: they resupply the one thing that was never wrong. THE DISTINGUISHING SIGNAL: the mailbox is still SENDING throughout. Sending and reading incoming mail are two independent permissions on the same mailbox, and only reading is switched off, so campaigns keep sending on schedule at the same limits while the connection warning persists. A mailbox with a genuinely wrong password could not send either — so 'sending works but it keeps asking to reconnect' is the signature of this state and of nothing else. WHAT PAUSES: warmup placement figures for that mailbox stop updating (confirming where warmup mail landed requires reading the inbox), and sequence steps that stop automatically when someone replies cannot see replies to that mailbox. The customer's own mail is untouched — nothing is lost or delayed and they can read it themselves as normal. THE FIX, and it is one action by one owner: whoever administers the email account turns incoming mail access back on for that mailbox. It is usually a per-mailbox setting, so it can be enabled for one address without changing anything company-wide; on Microsoft 365 it sits with the mailbox's email app settings in the admin area, on Google Workspace with the user's email settings in the admin console. It is commonly a default on business email plans or a company-wide security setting, so it is usually not aimed at that mailbox specifically. No reconnect is needed afterwards — WarmySender keeps checking on its own and the first successful read clears the warning automatically, usually within minutes. Includes a worked example and a copy-paste sentence to send to an IT administrator. 7-question FAQPage-structured FAQ. Written after a customer reconnected the same three mailboxes every day for days on advice that could not work, while those mailboxes sent normally the entire time. Account safety: pure documentation; zero outbound API surface. Built 2026-08-21. - Why warmup emails sometimes appear in your inbox (and how WarmySender tidies them) — reassurance explainer for the common "why are warmup emails showing up in my inbox / a bunch appeared then disappeared" question: https://warmysender.com/documentation/why-warmup-emails-appear-in-your-inbox — Plain-language self-serve doc explaining that email warmup works by having real inboxes exchange friendly emails and mark them as wanted (building sender reputation), and because warmup uses your REAL inbox, some warmup emails briefly land where you can see them. Core reassurance: WarmySender automatically tidies warmup emails out of your inbox and spam folder — it waits at least a day so each message can finish counting toward warmup, and clears it within two — so nothing older builds up; the customer does not need to delete, archive, or sort them, and real mail / campaign replies are never touched. CRITICAL nuance customers misread: because the cleanup deliberately waits, the MOST RECENT DAY OR TWO of warmup mail is ALWAYS visible in the inbox by design — if a mailbox is set to 40 warmup emails a day, expect roughly 40 to 80 sitting there at any time (commonly 45 to 90 at typical targets). That standing stack is normal and is part of what makes the mailbox look natural to providers; it is NOT a cleanup that failed to run. How to tell the cleanup IS working: check the AGE, not the amount — warmup mail from three or more days ago should not be in the inbox. Explains why the visible volume can look bursty or inconsistent: the amount of warmup mail you briefly see tracks your OWN sending volume — when you ramp a campaign, more warmup replies arrive at once so you may see a short-lived cluster before they're tidied away; when volume is low you'll rarely see any. Concrete example: weeks of low steady sending → barely any visible warmup mail; launch a bigger campaign → a handful appear at once for a day or two → tidied away → back to rarely noticing them. So "quiet, then a brief cluster, then gone" is normal and tracks volume, not a glitch. Optional self-serve tip: every warmup email's subject line ends with a short tag like "[ref: AB12CD34]" (the letters/numbers change but "[ref:" is always present); a customer who wants to file them away themselves can create a Gmail filter (Settings → Filters → Create a new filter, Subject contains "[ref:", then Skip the Inbox / Apply a label) or an Outlook rule (Settings → Mail → Rules, Subject includes "[ref:", Move to a folder). FAQPage-structured FAQ covers "why do warmup emails show up in my inbox?", "do I need to delete them myself?" (no), "how long until they disappear?" (at least a day, cleared within two), "how many should I expect to see at any time?" (one to two days' worth — 40 to 80 on a mailbox set to 40 a day, and check the age not the amount), "a bunch appeared then disappeared — is something broken?" (no — tracks volume), "what if I see too many at once?", "how can I filter them myself?" (the [ref: subject tag), and "will tidying warmup emails touch my real mail?" (no). Internal links to /documentation/understanding-your-warmup-inbox-rate, /documentation/how-your-warmup-daily-volume-is-decided, /faq/email-warmup, /mailboxes. Account safety: pure documentation; zero outbound API surface. Built 2026-06-06. - Why warmup emails appear in your SENT folder (and the 30-second filter that hides them) — the answer to "my Sent folder is full of warmup messages and I can't find my real replies", most often reported by customers on Outlook / Microsoft 365: https://warmysender.com/documentation/why-warmup-emails-appear-in-your-sent-folder — Plain-language self-serve doc whose short answer is: your own email provider put them there, not WarmySender. Warmup is sent from your REAL mailbox, and Outlook and Microsoft 365, Gmail and Google Workspace, Yahoo, AOL and iCloud all automatically keep their own copy of everything sent from the account, so a warmup copy lands in Sent ("Sent Items" on Outlook) the same way any message you type by hand does. WarmySender NEVER saves a warmup message to the Sent folder — warmup is automated background activity, not mail the customer wrote. Real outbound mail is treated differently and on purpose: campaign emails, sequence steps and replies ARE saved to Sent on providers that don't do it themselves, and skipped on Outlook and Gmail because those providers already save it (skipping avoids duplicates). Mailboxes on smaller custom-domain hosts often don't save outgoing mail at all, which is why two customers on identical plans can genuinely see different things. The fix the customer controls (CORRECTED 2026-08-13 — the recipe below MUST stay scoped to the customer own sent mail; the previous subject-only version also caught INCOMING warmup and filed it out of the inbox): every warmup subject line ends with a short tag like "[ref: AB12CD34]" (letters/numbers change, "[ref:" is always present), but a rule matching the subject ALONE matches the warmup ARRIVING from peers just as well as the copies the customer sent. The rule must therefore carry a SECOND condition scoping it to their own sent mail. Gmail recipe: Settings → See all settings → Filters and Blocked Addresses → Create a new filter → From = the customer own address → Subject contains "[ref:" → Create filter → Apply the label (e.g. "Warmup sent") → LEAVE "Skip the Inbox (Archive it)" UNTICKED (it does nothing for sent copies and is the tick that would hide incoming warmup) → tick "Also apply filter to matching conversations" to catch the backlog. Outlook: the Settings → Mail → Rules screen only runs on mail ARRIVING in the inbox, so it CANNOT tidy Sent Items and a rule made there would catch incoming warmup instead — instead open Sent Items, set the search scope to Current folder, search "[ref:", select all and move to a folder the customer created; to automate it, use the Outlook DESKTOP app: File → Manage Rules & Alerts → New Rule → "Apply rule on messages I send" → with specific words in the subject "[ref:" → move it to the specified folder. Filtering the INCOMING side is allowed and costs nothing — warmup is found wherever the mailbox has filed it, not only in the inbox — but leaving incoming warmup in the inbox most closely mirrors ordinary mail, so it is the better default. Warmup mail arriving in the INBOX is tidied away automatically — the cleanup waits at least a day and clears within two, so the most recent day or two stays visible there by design and nothing older builds up — so the Sent folder is the only side that needs a filter. Reassurance: a Sent copy is just a record on the customer's own mailbox — it has no effect on deliverability or sender reputation, and filtering/moving/deleting those copies does not affect warmup or warmup results. Caveat covered: Sent copies do consume mailbox storage, and MOVING them frees nothing — they must be deleted to reclaim space, which matters for a mailbox close to full. 8-question FAQPage-structured FAQ covers "why are warmup emails in my Sent folder?", "can WarmySender stop them being saved?" (no — it's the provider's behavior), "how do I stop them cluttering Sent?", "the rule works but old ones are still there — why?", "will filtering or deleting them break warmup?" (no), "my colleague on the same plan doesn't see this — why?" (depends on the mailbox host), "what about the ones in my inbox?" (automatic), and "do these copies use my storage?". Internal links to /documentation/why-warmup-emails-appear-in-your-inbox, /documentation/understanding-your-warmup-inbox-rate, /documentation/how-your-warmup-daily-volume-is-decided, /documentation/why-is-my-mailbox-full, /faq/email-warmup, /inbox, /warmup. Account safety: pure documentation; zero outbound API surface. Built 2026-07-27. - Why is my warmup bounce rate high? (what a high-LOOKING warmup bounce rate means, the small-sample effect, and when to actually act) — the reassurance + when-to-act explainer for the "my warmup bounce rate looks alarming — is my domain in trouble?" question: https://warmysender.com/documentation/why-is-my-warmup-bounce-rate-high — Plain-language self-serve doc whose short answer is: early in the day, and on a mailbox that is still warming up, a warmup bounce rate almost always looks HIGHER than it really is because it is measured against a SMALL SAMPLE — and a small sample makes one or two bounces look like a big percentage. Three ideas carry the page: (1) SMALL-SAMPLE EFFECT — warmup sends only a handful of emails early in the day and while a mailbox is still ramping, so the bounce rate is a fraction with a tiny denominator: a single undeliverable message out of 4 sent reads as 25%, while that same one bounce out of 60 sent by evening reads as under 2% — the underlying health did not change, the sample simply grew big enough to be honest, which is why you should read the number at END OF DAY and as a TREND over a couple of weeks rather than first thing in the morning or off a single day. (2) WARMUP BOUNCES ARE NOT CAMPAIGN BOUNCES — a warmup bounce does not land on your reputation the way a cold-email bounce to a bad prospect address does; WarmySender exchanges warmup mail between real inboxes and automatically SKIPS a message before sending whenever the receiving inbox is full or temporarily unavailable, so most would-be failures never count against your mailbox at all (the customer-facing companion to the deliverability-protection page). (3) WHEN TO ACTUALLY ACT — the reading worth investigating is a warmup bounce rate that stays high across a LARGE end-of-day sample for several days in a row (not a spiky morning number), and the durable fixes are the standard, safe ones: confirm SPF / DKIM / DMARC are set for the sending domain, make sure the mailbox is fully connected with incoming (IMAP) access so placement can actually be measured, and let warmup keep running so the ramp and the recent-health window bring the number back down on their own — never chase a lower number by blasting volume from a still-warming mailbox. FAQPage-structured FAQ covers "why does my warmup bounce rate look so high?" (small sample early in the day / while ramping), "is a high warmup bounce rate hurting my domain?" (almost always no — warmup skips undeliverable inboxes before sending and reflects only recent activity; read the trend), "why does it drop by the evening?" (the sample grew into an honest denominator), "do warmup bounces count against me like campaign bounces?" (no — different from sending to a bad prospect list), "when should I actually worry?" (a high rate that persists across a large sample for several days, not a morning spike), and "how do I bring it down for good?" (SPF/DKIM/DMARC, a full connection with incoming access, and keeping warmup running). Internal links to /documentation/understanding-your-warmup-inbox-rate, /documentation/what-is-my-mailbox-warmup-score, /documentation/how-warmup-protects-your-deliverability, /documentation/how-your-warmup-daily-volume-is-decided, /documentation/how-your-warmup-daily-volume-is-decided, /faq/email-warmup, /mailboxes. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — warmup bounce rate is part of the Email Warmup pillar, and a clean, well-warmed mailbox is what powers your Cold Emailing. Account safety: pure documentation; zero outbound API surface; warmup only ever SKIPS a send that would bounce and never loosens any sending limit to make a number look better. Keywords: warmup bounce rate high, why is my warmup bounce rate so high, warmup bounce rate small sample, warmup bounces vs campaign bounces, high warmup bounce rate new mailbox, warmup bounce rate drops by evening, when to worry about warmup bounce rate, lower warmup bounce rate, warmup bounce rate not a domain problem, read the trend not one day. Built 2026-07-22. - How do I filter the leads database by industry? (pick a GROUPED industry option, marked ★ at the top of the Industry menu, because leads come from several data sources that label industries differently): https://warmysender.com/documentation/filtering-leads-by-industry — Plain-language self-serve how-to whose short answer is: open the Leads page, open the Industry menu, and pick a grouped option from the top of the list (the ones marked ★, e.g. "SaaS / Software / Internet" or "Healthcare / Biotech"), then combine it with a Country, a Job title, or a keyword. Why the grouped option matters (the whole point of the page): the contacts come from more than one data source, and those sources describe "industry" in different words — SOME by the company's SECTOR (Retail, Healthcare, Manufacturing, Real Estate = what the business does) and SOME by the person's FUNCTION (Engineering, Sales, Marketing, Finance = what the person does inside it). Both are valid but they're different vocabularies, so typing a single raw word only matches the records that use that exact word and silently misses the same companies labeled another way — the list comes back thin or lopsided and it's easy to assume "there just aren't many leads in this industry" when the filter only caught one slice. Each grouped ★ option gathers up the many ways an industry gets written across every data source and every region into one recommended choice, so it matches consistently — that's why the groups sit at the top of the menu and are the recommended pick. Practical guidance: the filters are additive (a live match count updates as you add each), you can pick more than one group if your offer spans sectors (e.g. SaaS / Software / Internet + AI / ML / Data), a surprisingly small list is almost always a sign a single raw word was used instead of a group (switch to the group and the count jumps), and you should sharpen with Country or Job title rather than dropping the group. Worked example: to reach sales leaders at US software companies — Industry = the grouped ★ SaaS / Software / Internet (not raw "software", which misses internet/cloud/platform businesses), Country = United States, Job title = "Head of Sales" — then Save to List and launch. 6-question FAQPage-structured FAQ covers "why pick a grouped option instead of typing an industry?" (multi-source labeling; a group matches across all of it), "where do I find the grouped options?" (top of the Industry menu, marked ★), "what are some example groups?", "can I combine industry with other filters?" (yes — additive), "can I select more than one industry?" (yes), and "my industry list looks tiny — what am I doing wrong?" (used a raw word; switch to the ★ group). Companion to the broad filters how-to. Internal links to /documentation/find-your-ideal-leads-with-filters, /documentation/leads-database-quality-and-freshness, /documentation/what-email-verification-results-mean, /leads, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — the lead database feeds all of them. Account safety: pure documentation; zero outbound API surface. Keywords: filter leads by industry, industry filter, grouped industry option, industry doesn't match, no leads in my industry, industries labeled differently, sector vs job function, star industry option, combine industry with country and job title. Built 2026-07-09. - How do I filter leads by postcode, city, or street? (go from a country down to a single neighbourhood): https://warmysender.com/documentation/how-to-filter-leads-by-postcode-city-and-street — Plain-language self-serve how-to for the LOCATION filters below Country and State / Region in the built-in B2B lead database. CITY: matches regardless of capitalization (new york = New York = NEW YORK) and understands common short forms and nicknames (NYC finds New York); several cities can be added at once (Boston + Chicago + Denver returns contacts in any of the three); pair with Country/State because city names repeat worldwide (Paris, France vs Paris, Texas). POSTCODE / ZIP (new): matches from the START of the code, so the amount you type sets how wide the net is — "100" returns every ZIP beginning 100 (10001, 10012, 10023 — a big slice of Manhattan), "10001" returns just that one, and "M5V" returns that part of downtown Toronto (Canadian codes work the same way, capitalization irrelevant). Available for UNITED STATES and CANADA contacts. Not every contact carries a postcode, so combine it with City or State / Region for the widest pool rather than using it alone. STREET CONTAINS (new, under More filters): matches the words you type anywhere inside a contact's street address — right for a named office tower, a business park, or a single avenue ("Yonge" finds addresses on Yonge Street). Keep the phrase short and distinctive. US and Canada. NO VERIFICATION FILTER (removed 2026-09-05): the lead database does not carry a deliverability status you can filter on — it is a directory of contact details, not a live check of whether a mailbox accepts mail today. The honest sequence the page teaches: build the list with the filters above, Save to List, then run that saved list through the Email Verifier before launching (see /documentation/what-email-verification-results-mean). DID YOU MEAN: when a keyword looks misspelled or a search returns very few matches, a "Did you mean ...?" suggestion appears above the results and re-runs the search corrected — the first thing to check on a surprisingly small count. HONEST LIMITS stated on the page: there is NO radius / "within X miles" search (the closest equivalent is a shorter postcode prefix), and there is NO postcode data for the UNITED KINGDOM or AUSTRALIA today — use City and State / Region in those markets. WORKED EXAMPLES: (1) lawyers in Manhattan — Country United States + City "NYC" + Postcode "100" + Job title Lawyer; (2) dentists in downtown Toronto — Country Canada + City Toronto + Postcode "M5V" + Job title Dentist, keeping City on because some records have no postal code; (3) a clean same-day list — City Boston + Chicago, Seniority VP, Save to List, run the saved list through the Email Verifier, launch. AI AGENTS: the same filters are available to any connected agent (Claude, ChatGPT, Cursor, Codex, OpenClaw, Hermes Agent, or any agent that speaks MCP) under the same names — postalCode and address (street match), alongside city, state and country; the agent builds the search and the list in plain language, never sends a message itself and can never raise a limit. 7-question FAQPage-structured FAQ covers prefix matching, which countries have postcode/street data, city capitalization and short forms, radius search (not yet), what "Street contains" matches, what to check when a search returns almost nothing, and agent access. Companion to /documentation/find-your-ideal-leads-with-filters (all filters) and /documentation/filtering-leads-by-industry (the industry deep dive). Internal links to /documentation/find-your-ideal-leads-with-filters, /documentation/filtering-leads-by-industry, /documentation/leads-database-quality-and-freshness, /documentation/what-email-verification-results-mean, /documentation/connect-your-ai-agent, /leads, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — the lead database feeds all of them. Account safety: pure documentation; zero outbound API surface. Keywords: filter leads by zip code, postcode filter, ZIP prefix search, leads by city, NYC leads, city abbreviation search, street address filter, filter leads by street, verify leads before sending, did you mean suggestion, radius search leads, no postcode UK Australia, M5V Toronto leads, 100 ZIP Manhattan leads. Built 2026-09-02; verification filter removed 2026-09-05. - Why does warmup (and auto-stop-on-reply) need incoming (IMAP) access, not just outgoing (SMTP)? (both features need to READ your inbox): https://warmysender.com/documentation/why-warmup-needs-imap-incoming-access — Plain-language self-serve explainer whose short answer is: warmup and auto-stop-on-reply both need to READ your inbox, and reading the inbox needs incoming (IMAP) access — outgoing (SMTP) only lets a mailbox SEND. Two features depend on the incoming side: (1) WARMUP works by your inbox RECEIVING friendly warmup mail, WarmySender MEASURING whether each landed in the inbox or spam (inbox-vs-spam placement is the single most important warmup signal), and RESCUING anything caught in spam back to the inbox to teach providers your mail is wanted — every one of those steps requires reading the receiving mailbox; (2) CAMPAIGN FOLLOW-UPS auto-stop the moment a prospect replies by WATCHING your inbox for that reply, so nobody gets a "just checking in" after they've already written back. With an OUTGOING-ONLY connection a mailbox can still send warmup mail and campaign emails, but WarmySender can't see the warmup arrive (so it can't measure or rescue) and can't see the reply (so the polite auto-stop can't run) — the fix is simply to ADD incoming (IMAP) access, which you can do at any time without removing the mailbox. "incoming (IMAP)" and "outgoing (SMTP)" are the standard settings customers configure in any mail app (the send half vs the see half). Gmail and Outlook: on a PERSONAL mailbox, signing in sets up BOTH in one step — nothing extra to configure. IMPORTANT EXCEPTION (corrected 2026-08-19; this page previously stated the unqualified version and it stranded a customer for three weeks): on a mailbox MANAGED BY AN ORGANISATION (Microsoft 365 / Google Workspace) sending and reading are two SEPARATELY GRANTED permissions and an administrator can allow sending while blocking reading. The sign-in still succeeds and the mailbox still sends, so nothing looks wrong — but nothing can be measured. See https://warmysender.com/documentation/why-we-cannot-read-your-inbox for the admin steps. Other providers (own domain / hosting): fill in the incoming (IMAP) details next to the outgoing (SMTP) ones, using your normal mailbox password (App Passwords are Gmail/Outlook only). Includes a send-only-vs-full capability table (both can send; only the full connection measures placement, rescues from spam, and auto-stops on reply) and a worked example (a send-only mailbox looks fine because everything sends, but warmup results stay flat and follow-ups don't stop; add incoming details and both smart halves switch on). Privacy note: incoming access is used only to run those features (measure warmup placement, rescue warmup mail from spam, notice prospect replies), running quietly in the background. WHERE REPLIES LAND (added 2026-07-16): a reply ALWAYS comes back to the address the campaign sent FROM — there is NO separate reply-to setting to configure and nothing routes replies to a different address. Consequence: the SENDING mailbox is the one that needs incoming (IMAP) access for auto-stop-on-reply to work. The three "someone replied but follow-ups kept going" causes: (1) the reply is only being read in a forwarded copy / shared inbox / CRM while WarmySender watches the sending mailbox, (2) the sending mailbox is connected send-only, (3) the campaign rotates across several mailboxes and not all of them have incoming access (each receives its own replies). Alias case: the reply returns to the alias and the provider delivers it to the inbox that owns the alias, so connecting that mailbox covers it. Manual stop for one prospect is always available from the campaign's Prospects tab. 9-question FAQPage-structured FAQ covers "why can't warmup work with send-only?" (it must read the inbox to measure + rescue), "what's the difference between incoming (IMAP) and outgoing (SMTP)?" (see half vs send half), "how does a campaign stop emailing someone once they reply?" (watches the inbox for the reply), "which inbox do replies go to?" (the address you sent from — no reply-to setting exists), "someone replied but follow-ups kept going — why?" (reply landed where we can't see it; check incoming access on the sending mailbox), "do I need to set incoming up manually on Gmail/Outlook?" (no — sign-in does both), "how do I add incoming access on my own domain/host?" (fill the IMAP details, normal password), "what does WarmySender do with inbox access?" (only those features), and "can I add incoming access later if I connected send-only first?" (yes — anytime). Internal links to /documentation/how-your-warmup-daily-volume-is-decided, /documentation/why-warmup-emails-appear-in-your-inbox, /documentation/connecting-mailboxes-without-app-passwords, /documentation/how-do-i-send-follow-ups-in-the-same-email-thread, /warmup, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — incoming access powers the Email Warmup pillar and the reply-aware Cold Emailing pillar. Account safety: pure documentation; zero outbound API surface. Keywords: warmup needs IMAP, why IMAP required, incoming vs outgoing email, SMTP only can't warm up, auto-stop on reply, stop follow-ups when prospect replies, add IMAP access, send-only mailbox limitations, read inbox to measure inbox placement. Built 2026-07-09. - Can I verify a big list all at once? Monthly allowance vs. purchased credit packs (and is verifying safe while campaigns run?): https://warmysender.com/documentation/email-verification-credits-and-daily-limits — Plain-language self-serve decision guide for "I've got a large list and I want it cleaned TODAY — can I, and is it safe while my campaigns are sending?" Short answer: yes, with PURCHASED credit packs. Two pools of verifications behave differently. (1) Your plan's INCLUDED monthly verifications are spread across the month at a gentle DAILY PACE — deliberately, for ACCURACY (a steady measured pace reads each address more reliably than a burst) and REPUTATION (a gentle rhythm keeps the process well-behaved) — which is ideal for everyday hygiene (a bit each day) but not for clearing a big list in one go. (2) PURCHASED credit packs are NOT held to that daily pace and NEVER EXPIRE, so you can point them at a large list and verify it in ONE BATCH the same day; a very large list still processes at a steady pace behind the scenes for accuracy (so it takes a little while to finish) but it doesn't stall on a day-by-day cap, and anything you don't use is waiting for next time. Verifying WHILE campaigns run is safe — two safeguards: undeliverable addresses are AUTOMATICALLY SKIPPED (your campaigns just won't send to them, so cleaning mid-campaign only improves what's about to go out), and NO ONE IS EMAILED TWICE (verifying a contact never re-enrolls them or resets their place in a sequence — someone partway through their follow-ups stays exactly where they are). "Unknown" results are always free from either pool (some large enterprise / Microsoft-protected domains won't reveal whether a mailbox exists → Unknown, no credit used); you're only charged for Valid / Risky / Invalid. Includes a monthly-allowance-vs-packs comparison table (comes-from, daily-pace, expiry, best-for) and a worked example (import a few thousand contacts, buy a pack sized for the list, submit the whole list, it processes and fills in results, launch and only the deliverable addresses are emailed — with no duplicates even if a campaign was already running). Exact pack prices are NOT restated here (they live on the buy-credits page so the numbers can't drift). Companion to the monthly+daily allowance explainer and the credit-packs/prices page. 6-question FAQPage-structured FAQ covers "can I verify a large list in one day?" (yes — with packs, which skip the daily pace and never expire), "why is my monthly allowance paced across the day?" (accuracy + reputation), "do purchased credits expire?" (no), "is it safe to verify while campaigns run?" (yes — undeliverable auto-skipped, no double-emails), "will verifying while I send cause duplicate emails?" (no — verifying doesn't re-enroll), and "what's the difference between my monthly allowance and credit packs?" (paced+refreshes-monthly vs no-pace+never-expire). Internal links to /documentation/email-verification-limits-and-credits, /documentation/email-verification-limits-and-credits, /documentation/what-email-verification-results-mean, /faq/deliverability, /documentation. Channels: the Email Verifier serves Cold Email (clean your list before you send). Account safety: pure documentation; zero outbound API surface; large batches process at a steady pace for accuracy. Keywords: verify big list at once, verify large list today, email verification daily limit, credits vs monthly allowance, credits never expire, verify while campaign running, undeliverable skipped automatically, no double emails, batch verify same day. Built 2026-07-09. - Why do my campaign emails include an unsubscribe link, and how do I choose the opt-out style and wording? — two opt-out styles (link vs reply), your OWN opt-out sentence, the {{opt_out}} placement token, your own domain, automatic reply opt-outs, footer previews: https://warmysender.com/documentation/unsubscribe-link-in-campaign-emails — Plain-language self-serve explainer whose short answer is: every campaign email gives the recipient a way to opt out and THAT PART IS ALWAYS PRESENT (required for compliant commercial/cold email under laws such as CAN-SPAM and GDPR, and a deliverability safeguard because an easy exit keeps people away from the spam button), but you CHOOSE HOW IT LOOKS AND WHAT IT SAYS. THE APPENDED LINE is "{company address} · {your opt-out sentence}" — the address is omitted when unset, and the old "Sent by {company}" prefix has been REMOVED (the sender name is already in the From line; repeating it under the sign-off gave a 1:1 email the shape of a mailing-list footer). TWO STYLES, set in Settings > Account under Company Address ("How recipients opt out"): (1) UNSUBSCRIBE LINK (default) — the sentence is a clickable link sitting on your own verified tracking domain if you have one and otherwise on a shared domain; the right choice at high volume to a single provider (roughly thousands of messages a day to Gmail addresses), where sender guidelines expect a visible link plus the invisible instruction that lets a mail app offer its own one-tap unsubscribe. (2) REPLY TO OPT OUT — the sentence opens a reply straight back to the sender's own mailbox, so there is NO third-party link anywhere in the email AND no invisible unsubscribe instruction at all, so mail apps no longer badge the message as a mailing. Recommended for 1:1-style outreach at normal volumes, where the guidelines simply ask for an easy way to unsubscribe and a clearly-worded reply instruction is one. YOUR OWN WORDING: an "Opt-out sentence" field in Settings > Account takes 4-120 characters and BECOMES the opt-out — the clickable text on the link style, the reply line on the reply style. Defaults when left blank: "Unsubscribe" (link) and 'Reply "unsubscribe" to opt out' (reply). Example custom wording: 'Not for you? Reply "stop" and I will remove you'. Keep it unmistakably an opt-out — vague wording like "click here" pushes recipients toward the spam button. PLACEMENT: put {{opt_out}} in your email body or inside your signature and the sentence renders exactly there, after which the appended line carries ONLY your company address; leave the token out and the full line is appended as usual, so a campaign email can never go out without an opt-out. You can set the style AND the wording in plain language through your AI agent ("switch my workspace to reply-to-opt-out", "set our opt-out sentence to ..."), and the public API exposes it as opt_out_text; the agent only changes the setting and never sends anything itself. AUTOMATIC REPLY OPT-OUTS (both styles): replies saying unsubscribe, opt out, remove me, take me off your list, stop emailing me or do not contact me — and the everyday equivalents in German, French, Spanish, Portuguese, Dutch and Italian — are recognised automatically: the person is unsubscribed across the whole workspace, added to the suppression list, the campaign stops for them immediately, and it is counted as an unsubscribe rather than a reply. "Not interested" and "no thanks" are deliberately NOT opt-outs and stay ordinary replies. OWN DOMAIN: Settings > Tracking, add a SUBDOMAIN of your sending domain (a bare/apex domain is refused at the point you add it, with track. offered as a one-click correction, because a bare domain cannot carry the record this needs), add the DNS record, click Verify — unsubscribe and click links then use your domain; if a verified domain ever stops answering, campaigns fall back to the shared domain and keep sending. FOOTER PREVIEWS: a live preview in Settings under the setting that updates as you switch style or retype your sentence, the footer shown under the body in the campaign wizard's email preview (with {{opt_out}} rendered in place), and a compact pre-launch "Footer check" card that flags a shared-domain link or a missing company address with one-click fixes. HONESTY: nobody can tell you which tab your mail landed in — providers do not report it — so no style is claimed to "land in Primary"; what the reply style does is remove the bulk-mail signals within your control (no third-party link, no invisible unsubscribe instruction, and no "Sent by ..." block). Includes a before/after footer comparison, a custom-sentence example, a {{opt_out}}-in-signature example, an opt-out-vs-spam-complaint comparison table, and a company-details section (the postal address is a compliance expectation; the company name still sets the From-line name). Warmup emails are separate behind-the-scenes reputation mail, not commercial outreach. 11-question FAQPage-structured FAQ covers "can I remove the unsubscribe link?" (no, but switch style and rewrite the wording), "can I change the wording?" (yes — the 4-120 character Opt-out sentence), "can I put it in my signature?" (yes — {{opt_out}}), "why did 'Sent by my company' disappear from the footer?" (removed on purpose; the From line already names you), which style to use for cold outreach, what happens when someone replies "unsubscribe", putting the link on your own domain, seeing the footer before you send, whether an opt-out hurts results, whether warmup mail includes one, and whether the reply style gets you into the Primary tab (nobody can promise that). Internal links to /documentation/how-to-use-your-own-tracking-domain, /blog/cold-email, /faq/deliverability, /blog/guides/why-emails-go-to-spam, /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /documentation. Channels: the opt-out footer is part of Cold Email (compliant, reputation-safe sending). Account safety: pure documentation; zero outbound API surface. Keywords: remove unsubscribe link, turn off unsubscribe link, reply to opt out, opt-out style, unsubscribe footer, company address footer, own tracking domain unsubscribe link, reply unsubscribe handled automatically, footer preview, footer check, emails landing in promotions, CAN-SPAM GDPR opt-out. Built 2026-07-09, updated 2026-09-04. - What warmup's receiving states mean (the reference page for "Not receiving warmup", "Incoming warmup paused" and "Cooling down") — answers "what does this note on my mailbox actually mean, what makes it go away, and does it drag my score down?": https://warmysender.com/documentation/what-warmup-receiving-states-mean — THE DEFINITIONS PAGE for the receiving half of warmup, written after two customers asked questions the docs could not answer. (1) "Not receiving warmup" is triggered by THREE DAYS with no warmup email confirmed arriving in that mailbox's inbox, and is cleared by ONE warmup email arriving — nothing else. There is NO timer, expiry or quiet period, so it does not lapse on its own and "just wait" is wrong unless something is actually going to arrive. It is derived fresh on every page load and is PER-MAILBOX, not per-domain. (2) "Incoming warmup paused" is the DOMAIN-WIDE one: we deliberately stopped sending warmup to that address because mail was not getting through, and it hits every mailbox on the domain at once; it either carries a restart date or waits on a review from our team. Do not conflate these two — they look alike on screen and differ in who can fix them. (3) "Cooling down" reduces how much a mailbox SENDS while its placement recovers and does NOT stop it receiving; it lifts after roughly a week of clean placement. (4) Success Rate CANNOT fall because nothing is arriving: it is a SENDING score measuring where the warmup this mailbox sent landed for its recipients, so a mailbox can honestly show 100% and "Not receiving warmup" at the same time. "Success Rate" (mailbox table column) and "Inbox Rate" (summary card) are the SAME number under two labels. (5) Two connected addresses that read the SAME inbox will produce this note spuriously, because they compete over the same messages — compare the incoming username and server across mailboxes. 8-question FAQPage-structured FAQ. Internal links to /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/understanding-your-warmup-inbox-rate, /warmup. Account safety: pure documentation; zero outbound API surface. Built 2026-08-13. - Why can't WarmySender read my inbox? (the mail IS arriving — we just have no permission to look) — answers "warmup says it is running, my sending looks completely normal, and the arrivals figure has sat at ZERO for weeks": https://warmysender.com/documentation/why-we-cannot-read-your-inbox — THE ANSWER, and it is the cause the other receiving pages did not cover: a work mailbox carries TWO SEPARATE PERMISSIONS — permission to SEND and permission to READ what arrived — and on Microsoft 365 or Google Workspace an ADMINISTRATOR grants each one independently. It is common to find sending switched ON and reading switched OFF, because they are two tick-boxes side by side and only the sending one is ever mentioned when a mailbox is set up. CONSEQUENCE: the mailbox keeps sending perfectly (warmup mail and campaign mail both go out on schedule, nothing is queued, dropped or lost), but nothing that arrives can be seen, so warmup results look empty while the mailbox itself is completely healthy. HOW TO TELL: the arrivals figure sits at a FLAT ZERO day after day rather than merely low (an ordinary receiving problem eventually gets SOMETHING), and a test email sent from a personal account on another provider LANDS IN THE MAILBOX'S OWN WEBMAIL while WarmySender still shows nothing. Those two together are conclusive that mail IS being delivered and that the missing piece is our ability to READ the mailbox — they do NOT establish WHY we cannot read it, which matters, see IF THE SETTING IS ALREADY ON below. MICROSOFT 365 FIX (about a minute, needs Global Administrator or Exchange Administrator): admin.microsoft.com → Users → Active users → the person's name → Mail tab → Manage email apps → tick IMAP (the incoming, "read what arrived" permission) → also check Authenticated SMTP (the outgoing one) is ticked → Save changes. The two sit SIDE BY SIDE in the same short list, which is exactly why enabling sending and leaving reading off is so easy to do without noticing. SEVERAL MAILBOXES: the Manage email apps panel is per-person, so repeat it for a handful; for a larger set an administrator can enable incoming access for a list of addresses in one pass with Microsoft's Exchange Online management commands. No organisation-wide change is needed or wanted. GOOGLE WORKSPACE FIX: admin.google.com → Apps → Google Workspace → Gmail → End User IMAP/POP Access (some consoles label the section End User Access, with the setting inside called POP and IMAP access) → pick the organisational unit → turn IMAP access on → Save; also confirm under Security → Authentication that users may manage their own app passwords, since Google mailboxes connect with an app password. IF THE SETTING IS ALREADY ON — DO NOT KEEP SENDING THE CUSTOMER BACK TO THE ADMIN CONSOLE: the administrator's permission is the MOST COMMON reason we cannot open an inbox but it is NOT the only one, and the note on the mailbox only ever claims "we could not get in", never "you blocked us". The connection to the customer's mail provider can fail for reasons that have nothing to do with their account — a provider refusing the way we sign in, a provider being briefly unavailable in a way that looks exactly like a refusal, or a cause sitting on the connection itself rather than in the mailbox — and from the outside all of them look identical. This note has appeared on Microsoft mailboxes whose settings were perfectly correct all along, and those customers went hunting through an admin console for something that was never wrong — which is the outcome this guidance exists to prevent. So: if the customer reports the reading permission is ALREADY enabled, or the mailbox is a personal one with no administrator at all, there is nothing further for them to change and the next step is ours, not theirs. The correct advice is to email hello@warmysender.com with the mailbox address and the sentence "the setting is already on" — and explicitly NOT to send them back to the admin console, keep changing settings, re-enter a password, or disconnect and reconnect (none of which can reach whatever is stopping the connection, and disconnecting discards weeks of warmup history). Sending is unaffected throughout, so nothing is urgent. TIMING AFTERWARDS: the note clears within about an hour (Microsoft usually under a minute, Google usually a few minutes and occasionally up to 24 hours); arrivals are counted the same day; the inbox-versus-spam picture fills in over the following few days; the mailbox looks normal within about a week, with a few extra days if it sat in this state a long time, because warmup rebuilds volume gradually on purpose. SENDING WAS NEVER AFFECTED — say this plainly to any customer asking: every campaign email sent normally on the schedule they set, warmup kept sending, nothing was held back or lost, and warmup history, campaigns, prospects and statistics are all intact. The only thing missing was the measuring. WHAT NOT TO DO: do NOT disconnect and reconnect the mailbox (it discards weeks of warmup history and the permission is not stored on our side anyway), do NOT re-enter the password (this is not a password problem), and do NOT change warmup settings (volume, schedule and ramp all describe SENDING, which was never the problem). NOT for personal Gmail / Outlook.com mailboxes — there the customer controls both permissions themselves and they arrive together; a personal mailbox receiving nothing is a different question (https://warmysender.com/documentation/why-warmup-emails-are-not-arriving-in-my-inbox). PRIVACY: read permission is used only to check whether warmup mail landed in the inbox or spam, move warmup mail out of spam, and notice prospect replies so follow-ups stop. 11-question FAQPage-structured FAQ. Internal links to https://warmysender.com/documentation/why-warmup-needs-imap-incoming-access, https://warmysender.com/documentation/smtp-tenant-disabled (the SENDING half of the same admin panel), https://warmysender.com/documentation/why-warmup-emails-are-not-arriving-in-my-inbox, https://warmysender.com/documentation/what-warmup-receiving-states-mean, https://warmysender.com/documentation/how-your-warmup-daily-volume-is-decided, https://warmysender.com/documentation/connect-microsoft-365-mailbox, /mailboxes, /warmup. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — this is an Email Warmup setup question that only appears on organisation-managed mailboxes. Account safety: pure documentation; zero outbound API surface. Built 2026-08-19. Keywords: cannot read inbox, can't read my inbox, no permission to read inbox, warmup zero arriving, nothing arriving but sending works, enable IMAP Microsoft 365, enable IMAP Google Workspace, admin blocked reading, manage email apps, authenticated SMTP and IMAP, warmup results empty, work mailbox permissions. - Why warmup emails aren't arriving in my inbox — and how to fix it (the receiving problems that DON'T clear on their own, and the two-minute check that identifies them) — answers the "warmup has been running for a week, it says it has sent me 135 emails, and not one has arrived — what is wrong?" question: https://warmysender.com/documentation/why-warmup-emails-are-not-arriving-in-my-inbox — THE ANSWER, and it is usually not something WarmySender can fix: most often the domain is not set up to accept email at all (no MX record), so mail addressed to it has nowhere to be delivered and is turned away before it reaches the inbox — a domain can send campaigns perfectly and still have no inbox behind it, because sending and receiving are two separate arrangements and having one does not give you the other. Second most common is a filter or rule moving warmup mail out of the inbox after it arrives (very often one the customer set up themselves to tidy warmup away and then forgot); third is an address created only for sending, with no mailbox behind it. Only a passing quiet spell on a healthy address clears by itself — the other three stay exactly as they are until somebody changes them, so waiting is the right answer for one case and an expensive mistake for the other three. Gives a two-minute self-check that separates them: send the address an email from a personal account on a DIFFERENT provider (not another address on the same domain, which can be delivered internally and proves nothing) and see if it arrives, then run a free "MX lookup" on the domain on its own — an empty result means email sent to that domain currently has nowhere to go. Fixing it is a few minutes at whoever manages the domain's DNS, with values from whoever hosts the mailboxes, then a few hours to take effect. Explicitly says WarmySender cannot change a customer's domain settings, that disconnecting/reconnecting the mailbox does NOT help and destroys weeks of warmup history, that warmup settings describe SENDING and cannot affect the receiving half, and that customers with several connected domains must check EVERY one, because the working domains make the dashboard look fine while the others quietly receive nothing. 12-question FAQPage-structured FAQ, including "what is an MX record, in plain English?", "my campaigns send fine, so how can my domain not accept email?", and "will this fix itself if I wait?". The page to read FIRST when nothing is arriving; its three siblings (https://warmysender.com/documentation/why-warmup-emails-are-not-arriving-in-my-inbox, https://warmysender.com/documentation/why-warmup-emails-are-not-arriving-in-my-inbox, https://warmysender.com/documentation/why-warmup-emails-are-not-arriving-in-my-inbox) all cover cases that resolve on WarmySender's side, so quoting them for a domain that cannot receive mail tells the customer to wait for something that will never happen. - Why did my LinkedIn invites pause today? (LinkedIn signalled a limit, the account is resting, sending restarts by itself) — answers the "I have 2 campaigns running but I am only getting 30-40 connections a week instead of 150 — is it broken?" question: https://warmysender.com/documentation/why-did-my-linkedin-invites-pause-today — THE ANSWER: nothing is broken and nothing needs re-launching. LinkedIn enforces its OWN invitation limits, and when it signals that an account has reached one, WarmySender pauses sending on that account so it can rest. Sending resumes automatically. WHY WE REST RATHER THAN RETRY: every further attempt during the rest period counts against the account and extends the rest, and a restricted or banned LinkedIn account cannot be recovered. Account safety wins over throughput, every time — so the correct action for the customer is to wait, not to retry, re-launch, or duplicate the campaign. WHY A WEEK TOTALS FAR FEWER INVITATIONS THAN CONFIGURED — five compounding reasons, and an assistant should walk them in this order: (1) LinkedIn's own weekly ceiling on the account, which no WarmySender setting can raise; (2) that ceiling differs by LinkedIn PLAN (Free vs Premium / Sales Navigator), and the customer can declare which plan an account is on inside WarmySender to unlock the higher ceiling — declaring a plan they do not actually hold does not help, because LinkedIn still enforces the real one, and over-reaching is what triggers the pause in the first place; (3) a NEW account eases in gradually over several weeks rather than starting at the ceiling; (4) several campaigns on ONE LinkedIn account SHARE ONE daily allowance — two campaigns each set to 75/day do not produce 150/day, they split one account's allowance, and adding another LinkedIn account is the only way to genuinely add capacity; (5) any days lost to a safety rest come straight off the week's total. Invitations sent are also not the same as connections made, since only a share are accepted. WHAT NOT TO DO: do not pause and re-launch campaigns, do not disconnect and reconnect the LinkedIn account, do not create duplicate campaigns to work around the limit — each of those either does nothing or makes the account less safe. WHEN IT IS NOT THIS: the campaign is outside its sending window, there are no eligible prospects left, or the LinkedIn account needs reconnecting — all of which the campaign reports separately. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — this is a LinkedIn Outreach question. Account safety: pure documentation; zero outbound API surface; every wait described exists to keep the LinkedIn account safe, and safety wins over forcing a send through. Built 2026-08-10. Keywords: linkedin invites paused, linkedin invitations stopped, why did my invites stop today, only 30 connections a week, expected 150 connections got 40, linkedin weekly invite limit, linkedin account cooldown, linkedin rate limit reached, two campaigns one linkedin account, campaigns sharing linkedin allowance, linkedin sales navigator limit, free vs premium linkedin limit, new linkedin account sending slowly, when do my invites resume. - How do I switch my LinkedIn seats to annual billing? (moving seats you already own onto annual or 3-year billing, and adding seats on a longer term in one step) — answers the "can I get the annual seat price without cancelling and buying again?" question: https://warmysender.com/documentation/how-do-i-switch-my-linkedin-seats-to-annual-billing — THE ANSWER: yes, at any time, from Billing. Nothing is cancelled, every seat is kept, and connected LinkedIn accounts are not touched. PRICES PER SEAT: $15 per month; $120 per year, which is $10 per month (33% less); $288 for three years, which is $8 per month (47% less). WORKED EXAMPLE: 5 seats billed monthly cost $75 a month, $900 across a year; the same 5 seats on annual cost $600 for the year, a saving of $300; on the 3-year term they cost $1,440 for three years against $2,700 monthly, a saving of $1,260. ADDING AND SWITCHING TOGETHER: going from 1 monthly seat to 5 annual seats is a SINGLE step and a SINGLE charge — set the seat count and the term, confirm once. NEVER CHARGED TWICE FOR THE SAME DAYS: the unused time left on the current seats is credited against the new charge, so only the difference is paid; if the credit is larger than the new charge there may be nothing to pay at all. THE ONE RULE: a seat term can never be longer than the plan's term — monthly plan means monthly seats; annual plan allows monthly or annual seats; 3-year plan allows monthly, annual or 3-year seats. To unlock a longer seat term, move the PLAN to that term first. HONEST DETAILS: switching starts a fresh billing cycle for those seats that day; longer terms are prepaid, so reducing seats before the term ends does not refund the unused part; reducing seat count is a separate step and changing the term never removes a seat; a declined card changes nothing at all — seats stay on the term they were already on; an existing cheaper per-seat rate is protected rather than being moved to today's list price. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — this is a LinkedIn billing question. Account safety: pure billing and documentation; no message, invite or DM is sent by any step described here, and no sending limit changes. Built 2026-08-12. Keywords: switch linkedin seats to annual, linkedin seats annual billing, change seat billing term, annual seats, 3 year seats, yearly linkedin seats, cheaper linkedin seats, seat discount, add seats annual, monthly to annual seats, save on linkedin seats - How WarmySender protects your warmup deliverability (warmup automatically avoids sending to inboxes that aren't accepting mail — on the first message AND every follow-up reply) — answers "does warmup ever waste sends on dead inboxes and hurt my reputation?": https://warmysender.com/documentation/how-warmup-protects-your-deliverability — Plain-language self-serve doc explaining that warmup is a two-way exchange between real inboxes, and that part of protecting your sender reputation is never wasting messages on inboxes that aren't accepting mail. When an inbox on the receiving side is full or temporarily unavailable, WarmySender recognizes it and skips the message before sending — steering your warmup toward healthy inboxes instead — rather than letting it come back undelivered (repeated undelivered messages are exactly the kind of signal that can chip away at a sender's reputation). Core point: this protection now covers EVERY message in the warmup conversation — the first message AND every follow-up reply — checked right before each send, so a warmup conversation never keeps replying into an inbox that isn't accepting mail (a full inbox stays full for a while, so covering replies is what makes the biggest difference). Reassurances: it's automatic (nothing to enable, tune, or monitor — on by default for every mailbox with warmup active), it's temporary (skipping an inbox just means it isn't accepting mail right now; it returns to being a normal destination once healthy again), and it never counts against you (a message that would have bounced is skipped before it's sent, so it doesn't land on your reputation and doesn't show up as a failure on your mailbox). Worked example: an inbox you've been warming with fills up and starts turning mail away → the next warmup message (even a reply) would come back undelivered → WarmySender skips it before sending → your warmup carries on with other healthy inboxes at its normal pace → once that inbox is emptied it quietly returns as a normal destination. Also notes the honest link to Inbox Rate (skipping pointless failures keeps the number honest; read the trend over a couple of weeks). 7-question FAQPage-structured FAQ covers "does warmup waste messages on inboxes that can't receive them?" (no — skipped before sending), "will undeliverable messages hurt my reputation?" (skipped before they land on it), "does this protect replies too or only the first message?" (both), "if warmup skips an inbox is that permanent?" (no — temporary), "do I need to turn this on or configure it?" (no — automatic), "will I see anything happen?" (usually not — invisible by design), and "does this affect my Inbox Rate?" (keeps it honest). Internal links to /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/understanding-your-warmup-inbox-rate, /documentation/how-your-warmup-daily-volume-is-decided, /faq/email-warmup, /mailboxes. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — this deliverability protection is part of the Email Warmup pillar. Account safety: pure documentation; zero outbound API surface; warmup only ever SKIPS a send that would bounce and never loosens any safety limit. Keywords: warmup deliverability protection, avoid sending to full inbox, skip undeliverable warmup, protect sender reputation, warmup replies skip dead inboxes, does warmup waste sends, warmup steers around unresponsive inbox, no bounces counted against my mailbox. Built 2026-07-13. - Why did several of my mailboxes suddenly show an error or "Reconnecting"? (calm reassurance explainer for the "do I need to do anything?" question): https://warmysender.com/documentation/why-are-my-mailboxes-reconnecting — Plain-language self-serve doc explaining that warmup and sending connect to your email provider many times throughout the day, and that providers occasionally have a brief, temporary connection hiccup — a short window where connections time out or get dropped. When that happens, one or several mailboxes can momentarily show a connection problem or a calm "Reconnecting…" status, even mailboxes that have been warming healthily for weeks. Core reassurance: this is almost always temporary and on the PROVIDER's side — NOT a problem with the customer's password, settings, or anything they did (especially if everything was working fine right before). WarmySender now recognizes this and shows a calm "Reconnecting…" status (not a scary red error) plus a single gentle top-of-page notice, keeps retrying automatically, and resumes warmup on its own once the provider is reachable again, with all warmup progress and history kept — usually clears by itself, often within a day or so. There is NOTHING the customer needs to do (no remove-and-re-add, no credential change, no toggling warmup off/on — doing so won't speed recovery because the hiccup isn't caused by anything on the mailbox); if they'd like to nudge it, an OPTIONAL one-click "Reconnect all" button on the warmup page re-checks the affected mailboxes immediately, but it's not required — they'll recover without it. Explains why several mailboxes can show "Reconnecting…" at the same moment: mailboxes with the same email provider share the same connection to that provider, so one brief provider hiccup can make a cluster reconnect together and then recover together — normal, and a sign of a single short-lived hiccup on one provider rather than a problem spread across the account. Clearly distinguishes this temporary state from a GENUINE password/credentials problem (rare): when a mailbox's sign-in has actually stopped working, WarmySender tells the customer clearly and asks them to reconnect that SPECIFIC mailbox with a direct prompt — so the rule of thumb is: a calm "Reconnecting…" status = nothing to do; a clear reconnect-this-mailbox prompt = follow it for that one mailbox. Notes the honest side effect on numbers: a briefly reconnecting mailbox pauses sending/receiving warmup for that short window, so its warmup numbers can look flat or move around more day to day — a measurement side effect of the pause, not a real deliverability drop, and it catches back up once warmup resumes; read the trend over a couple of weeks, not a single day. 8-question FAQPage-structured FAQ covers "several mailboxes show Reconnecting — do I need to do anything?" (almost always no), "did I do something wrong / is my password broken?" (almost certainly not), "why did several go Reconnecting at once?" (shared provider connection), "should I click Reconnect all?" (optional), "will my warmup or progress be lost?" (no — it resumes where it left off), "how long does recovery take?" (usually a day or so, on its own), "still showing after a while — what do I do?" (try Reconnect all, follow any specific reconnect prompt, else contact support), and "will my cold email or LinkedIn campaigns be affected?" (sending from that one mailbox waits then resumes; other mailboxes and LinkedIn unaffected). Internal links to /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/why-account-shows-connected-but-not-sending, /documentation/how-your-warmup-daily-volume-is-decided, /faq/email-warmup, /mailboxes. Account safety: pure documentation; zero outbound API surface. Built 2026-06-09. - What is my mailbox's warmup score (and is it safe to send from)? (plain-language explainer for the "what does this number mean, is it good, and which one do I trust?" question): https://warmysender.com/documentation/what-is-my-mailbox-warmup-score — Plain-language self-serve doc whose short answer is: your warmup score is a simple at-a-glance read on how healthy a mailbox is for sending RIGHT NOW, built from how well your RECENT warmup mail has been landing in the inbox (rather than spam), with steady, low-bounce sending. It reflects roughly the LAST WEEK of activity, so it always shows how the mailbox is doing lately — not months ago. Core points: (1) WHAT IT MEASURES — three things move it: inbox placement (the share of recent warmup mail landing in the inbox rather than spam — the biggest factor), steady clean sending (mail that goes out reliably without coming back undelivered), and recency (older history gradually fades out of the picture). Nothing to calculate or tune; WarmySender works it out and keeps it current as warmup runs; you see it on the Warmup page next to each mailbox. (2) "BUILDING DATA" ON A NEW MAILBOX IS NORMAL AND GOOD — a brand-new mailbox shows "Building data" instead of a number because a score only means something once there's enough recent activity behind it; showing a number that early would be a guess, so rather than a number it can't stand behind, WarmySender shows "Building data" until there's a solid base, and a real score appears on its own after a few days of warmup. (3) A SCORE CLIMBS BACK ON ITS OWN AFTER A ROUGH PATCH — because the score is built from RECENT activity, it recovers naturally: if a mailbox had a rough stretch (some warmup mail slipped into spam, or it briefly couldn't send) the score dips, but as fresh healthy days come in the older rough days age out of the window and the number climbs back up without the customer doing anything — the best move after a rough patch is simply to LET WARMUP KEEP RUNNING (no remove-and-re-add, no setting to change). (4) IS IT SAFE TO SEND — a mailbox scoring HIGH with steady inbox placement is in good shape to send from (a green light); "Building data" is not a warning, just early days (let it run longer before a big campaign); a LOWER score is a signal to keep warmup running and give it time to build before pushing volume, NOT a sign anything is broken or the domain is blocked. (5) THE NUMBER MOVES DAY TO DAY — it updates as warmup runs, so small movement is normal (especially on a day a mailbox sent/received less, e.g. while briefly reconnecting); read the TREND over a couple of weeks rather than any single day. Worked example: three mailboxes — one warming two weeks with almost all warmup mail landing in the inbox shows a HIGH score (confidently send from it); one added yesterday shows "Building data" (give it a few days); one that had a rough week dipped, and as its fresh healthy activity replaces the older rough days over the following days the score climbs back on its own. 8-question FAQPage-structured FAQ covers "what is my warmup score and what does it mean?" (recent inbox placement + steady sending), "why does my new mailbox say Building data?" (not enough recent activity yet — normal), "my score was low and now it's higher — what changed?" (recent activity replaces old; recovers on its own), "is a high score safe to send from?" (yes — high + steady is a green light), "why does the number move day to day?" (updates as warmup runs; read the trend), "how do I improve my warmup score?" (keep warmup running steadily; don't blast from a still-warming mailbox), "does a lower score mean my mailbox is broken or my domain is blocked?" (no — reflects recent placement; warmup is designed to bring it up), and "where do I see my warmup score?" (Warmup page, next to each mailbox). Internal links to /documentation/understanding-your-warmup-inbox-rate, /documentation/how-your-warmup-daily-volume-is-decided, /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/how-warmup-protects-your-deliverability, /faq/email-warmup, /warmup, /mailboxes. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — the warmup score is part of the Email Warmup pillar and tells you which mailboxes are in shape to power your Cold Emailing. Account safety: pure documentation; zero outbound API surface; the score never loosens any sending limit — it just reports recent inbox placement. Keywords: warmup score, mailbox health score, what does my warmup score mean, is my mailbox safe to send from, Building data warmup, warmup score low then recovered, why is my warmup score low, warmup score building up, mailbox score dropped, read the trend not one day, new mailbox no score yet. Built 2026-07-18. - How are my campaign metrics calculated? (plain-language explainer for the "what do Open Rate, Click Rate, Reply Rate, and Bounce Rate actually mean, and which one should I trust?" question): https://warmysender.com/documentation/how-are-my-campaign-metrics-calculated — Plain-language self-serve doc whose short answer is: a campaign's four headline numbers are each a simple share of the emails you SENT — open rate is how many were opened, click rate is how many got a link click, reply rate is how many earned a reply, and bounce rate is how many couldn't be delivered — but they are NOT equally reliable, and reply rate is the one that actually predicts booked meetings and revenue. Core points: (1) OPEN RATE is an APPROXIMATE, directional signal — the share of sent emails recorded as opened, detected by a tiny invisible open-tracking pixel that loads when the message is displayed; because privacy features in modern email apps and image caching (providers pre-loading images on their own servers) can trigger that pixel before a human looks, or when nobody opens at all, recorded opens include some that never happened, so open rate tends to read HIGHER than reality — good for spotting TRENDS over time (e.g. is a new subject line lifting opens across a big batch), not for judging a single campaign's success on its own. (2) CLICK RATE is the share of the emails you SENT that got a link click — the industry-standard click-through rate — and WarmySender measures it against emails SENT, NOT against opens; that keeps it lined up with open rate (same denominator) and means a shaky, over-counted opens number can't distort it, making click rate the more trustworthy of the two engagement numbers; it is only meaningful if your emails contain links (a plain email with nothing to click always shows 0%). (3) REPLY RATE is the share that wrote back — a real human choosing to respond, the clearest early sign of genuine interest and the step closest to a booked meeting; unlike an open (a machine can trigger it) or a click (needs a link and still isn't a conversation), a reply is the metric that actually leads to revenue, so if you optimize one number, optimize this — a campaign with a modest open rate but a healthy reply rate is winning, and a sky-high open rate with almost no replies is not. (4) BOUNCE RATE is the share that couldn't be delivered (address doesn't exist, is mistyped, or is no longer active); keep it LOW by sending to clean, VERIFIED lists (verify before a big send so bad addresses are caught before they go out), because providers watch how often you send to non-existent addresses and a lot of bounces can push even your good emails toward spam — a clean list protects sender reputation and helps everything land in the inbox. WHY REPLY RATE IS THE NUMBER TO WATCH: opens are approximate (inflated by privacy features), clicks only matter if you use links (and still aren't a conversation), replies are real human interest — so start with reply rate, keep bounce rate low to protect inbox placement, and treat open/click rates as supporting context rather than the verdict. SEQUENCES FOCUS ON REPLIES (framed as a strength, not a gap): WarmySender sequences deliberately measure REPLIES, not opens or clicks — open/click tracking adds an invisible pixel and rewrites your links, a footprint inbox providers associate with bulk/marketing mail that can nudge messages toward spam, so by SKIPPING it sequence emails stay clean and plain, look like a normal person-to-person message, and are more likely to LAND IN THE INBOX where they'll be read; since replies are the truest signal of interest anyway, nothing that matters is lost — and if you want opens/clicks for a specific send, WarmySender's standard campaigns can track them with an on/off toggle. Worked example: Campaign A shows a 70% open rate but a 1% reply rate (high opens flatter it, and some opens were never real — NOT working as well as it looks); Campaign B shows a 45% open rate and a 6% reply rate (fewer recorded opens, far more real conversations — the stronger campaign, because replies turn into meetings); if A also had a high bounce rate, cleaning the list is the first fix. 8-question FAQPage-structured FAQ covers "how is open rate calculated?" (opens ÷ sent via a pixel; approximate because privacy features/image caching inflate it), "why is my open rate so high — can I trust it?" (a mix of genuine and inflated opens; read the trend, reply rate is reliable), "is click rate the share of opens that clicked, or of emails sent that clicked?" (emails sent — the standard click-through rate, lined up with open rate), "what's a good reply rate for cold email?" (varies; it's the number that predicts meetings, so grow it — compare your own campaigns), "why don't my sequences show open or click rates?" (they focus on replies; skipping tracking keeps emails clean and inbox-bound; use a campaign if you want opens/clicks), "how do I lower my bounce rate?" (send to clean, verified lists; remove invalid entries; don't re-send to bounces), "which campaign metric should I focus on?" (reply rate — closest to a booked meeting; keep bounce rate low; opens/clicks are context), and "do open-tracking pixels hurt my inbox placement?" (they leave a small footprint providers link to bulk mail; that's why sequences skip them and lead with replies). Internal links to /documentation/accurate-open-and-click-tracking, /documentation/how-to-see-emails-that-didnt-get-delivered, /documentation/email-verification-limits-and-credits, /documentation/understanding-your-warmup-inbox-rate, /documentation/how-warmup-protects-your-deliverability, /documentation/how-do-i-send-follow-ups-in-the-same-email-thread, /faq/email-warmup, /campaigns, /sequences, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — campaign metrics are part of the Cold Emailing pillar, and keeping bounce rate low + reputation warm (Email Warmup) is what keeps those campaigns landing in the inbox. Account safety: pure documentation; zero outbound API surface; no metric loosens any sending limit — it just reports what happened. Keywords: campaign metrics, open rate, click rate, reply rate, bounce rate, what does open rate mean, why is my open rate so high, is open rate accurate, click rate vs open rate, click-through rate, clicks of opens or emails sent, what's a good reply rate, how to lower bounce rate, why don't sequences show opens, which email metric matters most, reply rate cold email, open tracking pixel spam. Built 2026-07-18. - Why is my mailbox full? (storage explainer for the "my mailbox says it's full and my warmup stopped — is my domain blocked?" question): https://warmysender.com/documentation/why-is-my-mailbox-full — Plain-language self-serve doc for the customer who sees a "Mailbox full" notice on a mailbox. Core answer up front: that mailbox has run out of STORAGE space with the email provider — it is a space problem, NOT a reputation problem, NOT a spam problem, and it does NOT mean the domain is blocked or blacklisted anywhere. Every mailbox has a fixed storage limit set by the provider; every message received and every message kept in the sent folder counts toward it, and once the limit is reached the provider stops accepting new mail for that address until space is freed. Most common on SMALLER EMAIL HOSTING PLANS where one plan's storage is shared across many mailboxes, so each address gets a modest allowance and an individual mailbox can quietly hit its limit — the analogy used is a physical mailbox packed too tight for the postman to fit another letter in. Why warmup stops: warmup is a TWO-WAY exchange (the mailbox must RECEIVE friendly warmup mail as well as send it, and that is what builds reputation); when the mailbox is full, incoming warmup mail cannot be delivered because there is nowhere to put it, so the conversation can only go one way and warmup cannot build reputation — progress is PAUSED, not damaged, and warmup progress + history are KEPT (nothing resets). What WarmySender does automatically: warmup emails are CLEARED OUT OF THE INBOX, AND OUT OF THE SPAM FOLDER, about a day after they arrive — no setting to switch on, it is simply part of how warmup runs, real mail and campaign replies are never touched, and warmup mail therefore cannot quietly build up in the inbox over time. On HOSTING mailboxes (the ones where storage limits actually bite) warmup mail is removed FOR GOOD, so the space is genuinely freed and it stops counting toward the limit; on GMAIL / GOOGLE WORKSPACE it is filed away out of the inbox instead — those accounts come with far more room, so running out of space is rare there. THREE HONEST CAVEATS stated explicitly on the page: (1) clearing warmup mail stops WARMUP from ADDING to the problem; it does NOT empty a mailbox already full of the customer's OWN accumulated mail — that part is theirs to clear; (2) space is genuinely reclaimed on hosting mailboxes, not on Gmail-type accounts; (3) THE SENT FOLDER IS NOT CLEARED. WarmySender never files warmup into Sent itself, but Gmail, Outlook / Microsoft 365, Yahoo, AOL and iCloud each keep their own copy of everything sent from the mailbox, and those copies DO count toward storage. They are deliberately never deleted because Sent also holds the customer's real campaign sends and hand-written mail. The customer clears them in one pass by searching Sent for the text [ref: (every warmup subject ends with a short tag like [ref: AB12CD34]) and deleting or archiving the results — step-by-step at /documentation/why-warmup-emails-appear-in-your-sent-folder. What the customer should do (two fixes that work together, either gets warmup running again): (1) FREE UP SPACE in that mailbox's webmail — empty the trash/bin folder first (deleted mail often still takes up space until the folder is emptied), empty the spam/junk folder, clear old mail with LARGE ATTACHMENTS (a few big attachments can take more room than thousands of plain messages), and check the sent folder which grows quietly and is easy to forget; (2) INCREASE THE MAILBOX'S STORAGE — most providers let you raise storage on an individual mailbox or move to a plan with more room; this is the fix that sticks if a mailbox keeps refilling, and it is a setting on the PROVIDER's side (their control panel), not in WarmySender. After clearing: everything resumes on its own — warmup starts receiving again, picks up where it left off, and the "Mailbox full" notice clears by itself; NO remove-and-re-add, no password re-entry, no toggling warmup off/on. Reassurance: the only real cost is time; other mailboxes are completely unaffected (which is the tell-tale sign the issue is that one address's storage rather than the domain), campaigns simply rotate to other healthy mailboxes, and LinkedIn + Instagram outreach are separate and carry on regardless; note that replies to a full mailbox may not reach the customer until space is freed, which is a good reason to clear it promptly. Worked example: ten mailboxes on one shared hosting plan, nine used lightly, the tenth a two-year-old main address whose sent folder and trash were never emptied → it hits its limit → incoming warmup can't be delivered and warmup stalls on that one address while the other nine keep warming → customer empties trash + spam + old large attachments → warmup resumes from exactly where it paused and the notice clears itself, while warmup mail arriving in the inbox from then on is removed about a day later so it never refills it. 9-question FAQPage-structured FAQ covers "what does Mailbox full actually mean?" (reached the provider's storage limit), "does it hurt my sender reputation or mean my domain is blocked?" (no — storage, not reputation; paused not damaged), "why did my warmup stop?" (two-way exchange; nothing can be delivered), "do I have to delete the warmup emails myself?" (no — cleared out after about a day automatically; removed for good on hosting mailboxes so the space is genuinely freed), "how do I free up space?" (trash, spam, large attachments, sent folder), "can I just give the mailbox more storage instead?" (yes — often the better long-term answer; provider-side setting), "what happens after I clear the space?" (nothing to do — resumes and clears itself, progress kept), and "will my campaigns and other mailboxes be affected?" (others unaffected; campaigns rotate; LinkedIn/Instagram separate). Internal links to /documentation/why-warmup-emails-appear-in-your-inbox, /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/why-are-my-mailboxes-reconnecting, /documentation/how-your-warmup-daily-volume-is-decided, /faq/email-warmup, /mailboxes. Account safety: pure documentation; zero outbound API surface. Built 2026-07-16 as the canonical landing page for "mailbox full", "email storage full", "why does it say my mailbox is full", and "warmup stopped because mailbox is full" queries. - I have many mailboxes on one hosting account — why do a few keep showing "Reconnect" or "Auth Error"? (shared-host explainer for the "my password is right and my other mailboxes on the same account work, so why these few?" question): https://warmysender.com/documentation/many-mailboxes-on-one-hosting-account-show-reconnect — Plain-language self-serve doc for the common setup where a customer connects many mailboxes that ALL live on the SAME email hosting account (one hosting plan / one webmail login) and a few of them briefly show a connection problem — or even a red "Auth Error" / app-password style message — while MOST of their other mailboxes on the same account keep working fine with the same password. Core reassurance: that almost always means the hosting provider briefly limited how many connections it would accept from that one account at the same moment — a temporary, host-side limit — NOT a wrong password (a wrong password would affect ALL of the account's mailboxes, not just one or two; the fact that the others work fine is the tell-tale that it is NOT credentials). Most likely to appear when many mailboxes get busy together (e.g. at the start of a new day). What WarmySender does automatically: (1) paces how many connections it opens to a single hosting account at once so it is far less likely to bump into the host's limit; (2) tells a busy-host hiccup apart from a real password problem, so it shows a calm "Reconnecting…" status instead of pushing the customer to fix credentials that were never wrong; (3) keeps retrying and resumes warmup on its own once the host frees up, with progress kept; (4) paces the Reconnect button's re-checks so the act of reconnecting can't make the host busier (this is why repeated reconnect attempts used to feel like they "kept failing"). What the customer should do: in almost every case NOTHING (no remove-and-re-add, no credential change, no toggling warmup off/on — none of it speeds recovery because the cause is on the host's side); if a mailbox still asks to reconnect after a while, re-enter the SAME password used to sign in to that mailbox's webmail — App Passwords are ONLY for Gmail and Outlook, so a hosting mailbox does not need one (link to /documentation/connecting-mailboxes-without-app-passwords). Distinguishes the temporary busy-host "Reconnecting…" state (nothing to do; neighbours fine; brief bursts) from a GENUINE, persistent password problem (rare; affects that mailbox consistently; WarmySender clearly and persistently asks to reconnect that specific mailbox). Notes the honest side effect on numbers: a briefly reconnecting mailbox pauses sending/receiving warmup for that short window so its warmup numbers can look flat day to day — a measurement side effect, not a real deliverability drop — read the trend over a couple of weeks. Optional long-term tip: customers running a very large number of mailboxes on ONE hosting account can spread them across more than one hosting account so no single host carries all the connections at once (not required). 8-question FAQPage-structured FAQ covers "lots of mailboxes on one host and a few show Reconnect/Auth Error — why?" (a brief host-side connection limit, not a wrong password), "my password is right and the others work — why this one?" (that's the sign it isn't credentials), "do I need to do anything?" (almost always no), "I kept clicking Reconnect and it kept failing — why?" (more attempts made the host busier; it now paces re-checks + auto-recovers), "do I need an App Password for my hosting mailbox?" (no — Gmail/Outlook only), "how long does recovery take?" (usually a day or so, on its own), "can I make it happen less often?" (WarmySender already paces; optionally spread across more hosting accounts), and "will my cold email or LinkedIn campaigns be affected?" (sending from that one mailbox waits then resumes; other mailboxes and LinkedIn unaffected). Internal links to /documentation/why-are-my-mailboxes-reconnecting, /documentation/connecting-mailboxes-without-app-passwords, /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /faq/email-warmup, /mailboxes. Account safety: pure documentation; zero outbound API surface. Built 2026-06-26. - Why your warmup can pause — and how it resumes (reassurance explainer for the "my warmup stopped on a mailbox — did I do something wrong and is my data safe?" question): https://warmysender.com/documentation/why-your-warmup-can-pause — Plain-language self-serve doc explaining that warmup can briefly PAUSE on a mailbox as a precaution to protect the customer's sending reputation after a temporary delivery issue, and that this almost never means anything is wrong with the mailbox, the customer's data, password, or settings. Core reassurance: warmup is a two-way exchange of friendly emails between real inboxes that gradually builds sending reputation; once in a while some of those warmup emails hit a short-lived delivery problem, and rather than keep pushing through a rough patch WarmySender briefly pauses warmup on the affected mailbox — a safety precaution working in the customer's favour, not a verdict on the mailbox, and it can happen even to a mailbox that's been warming healthily for weeks. CORRECTED 2026-07-31 — this entry and the page previously said, without qualification, that "cold email + LinkedIn campaigns KEEP RUNNING (only warmup is paused)" and that warmup can always be turned "back on in ONE CLICK". Both are true of ONE of the two causes and false of the other, and the false half stranded billing-suspended customers pressing a button that cannot work. There are TWO causes and the page now separates them: (A) A DELIVERY PRECAUTION — some warmup mail hit a temporary delivery problem, so warmup paused on that one mailbox. In this case only warmup is paused, campaigns keep running, it usually clears on its own within a day or so, and Resume warmup genuinely works in one click. (B) A BILLING PAUSE — an unpaid invoice, or a free trial that ended without a plan being chosen. In this case CAMPAIGNS ARE PAUSED TOO (cold email, LinkedIn and Instagram steps all stop alongside warmup), and the Resume warmup button does NOT work: the request to switch warmup on is declined while the plan is inactive, and a routine check would restore the pause a few minutes later anyway. Settling the outstanding invoice (or choosing a plan) is the only thing that lifts it, after which campaigns and warmup both return on their own, normally within a minute, with no button to press. HOW TO TELL WHICH: if your campaigns are paused too, or Billing shows an outstanding invoice or an ended trial, it is the billing case. In BOTH cases the mailbox STAYS CONNECTED (no password/settings change) and warmup progress and history are KEPT — warmup resumes from where it left off and never restarts at day one; nothing is deleted, reset, or at risk. Reassures the customer they did NOT do anything wrong and the mailbox is not broken (a pause is a response to a passing delivery condition, not a penalty or setup mistake — no need to remove-and-re-add or change credentials). Worked example: a mailbox warming nicely for weeks has some warmup emails hit a brief delivery problem → warmup pauses on that one mailbox to protect reputation while other mailboxes' campaigns and LinkedIn keep running and the mailbox stays connected with history intact → the problem clears → leave it (resumes on its own) or click "Resume warmup" → it continues from exactly where it paused, nothing lost, nothing to rebuild. Notes that warmup is careful about WHEN it pauses (a healthy active mailbox in normal use is protected from being paused by a passing hiccup; genuinely problematic conditions are still acted on). If a pause sticks around, the page now sends the reader to CHECK THE BILLING SIDE FIRST — if campaigns are paused too, or Billing shows an outstanding invoice or an ended trial, clicking "Resume warmup" will never hold no matter how many times it is pressed, and settling up is the only thing that lifts it. Only when the plan is active and campaigns are sending normally does the page suggest waiting a little and pressing "Resume warmup" once more, with support as the next step if it persists. Distinguishes this state from its two neighbours, each with its own explainer: "Reconnecting…" (a brief provider-side connection hiccup that retries automatically — /documentation/why-are-my-mailboxes-reconnecting) and "Not receiving warmup" (warmup active but one mailbox briefly stopped RECEIVING incoming warmup, restores on its own — /documentation/why-warmup-emails-are-not-arriving-in-my-inbox) — common thread: temporary, mailbox + progress safe, recovers often on its own. 9-question FAQPage-structured FAQ covers "why did my warmup pause?" (a delivery precaution, or a billing pause), "my warmup and my campaigns are both paused — what does that mean?" (that is the billing case; settle up in Billing), "is my mailbox or data at risk?" (no — fully reversible, nothing deleted), "did I do something wrong / is my mailbox broken?" (almost certainly not), "how do I turn warmup back on?" (one click when the plan is active; when it is a billing pause the request is declined and settling the invoice is the fix), "will I lose my progress?" (no — resumes where it left off), "will my campaigns be affected?" (only warmup pauses in the delivery case; campaigns pause alongside warmup in the billing case), "how long does a pause last?" (often a day or so on its own in the delivery case), and "it paused again right after I resumed — what do I do?" (check Billing first — if it is a billing pause the button will never hold; otherwise the delivery condition may not have cleared). Internal links to /documentation/why-are-my-mailboxes-reconnecting, /documentation/why-warmup-emails-are-not-arriving-in-my-inbox, /documentation/how-your-warmup-daily-volume-is-decided, /faq/email-warmup, /warmup, /mailboxes. Account safety: pure documentation; zero outbound API surface. Built 2026-06-19. - Why won't my Sales Navigator list import? (Sales Navigator lists DO import when the connected account is carrying Sales Navigator access; after a reconnect an account can come back without that access — often showing Premium — even though the subscription is active; one-click Re-check Sales Navigator access restores it; reconnect with Sales Navigator open if the re-check can't find it; a regular search link works on any account): https://warmysender.com/documentation/why-my-sales-navigator-list-wont-import — Plain-language self-serve doc for "I pasted a Sales Navigator list link and nothing imported." Core explanation: a Sales Navigator lead list (linkedin.com/sales/lists/people/…) DOES import into WarmySender — as long as the connected LinkedIn account is currently CARRYING Sales Navigator access, because the list lives behind that paid product and only a session that holds Sales Navigator can open it. The most common reason a list comes in empty: after you reconnect a LinkedIn account it can come back WITHOUT Sales Navigator access even though your subscription is STILL ACTIVE, and in that state the account may show its plan as PREMIUM — so the list has nothing to open from and imports empty. This is not a lapsed subscription; the connection just came back without the Sales Navigator part attached. The one-click fix: on the import screen, pick the account you're importing with (if it shows Premium when you know it has Sales Navigator, that's the tell-tale sign) and click the "Re-check Sales Navigator access" button that appears next to it — it looks again for Sales Navigator access on that connected account and restores it, so the plan flips back to Sales Navigator and the list imports. If the re-check can't find it: reconnect the account while Sales Navigator is open in the SAME browser (open Sales Navigator in a tab, leave it open, then reconnect from LinkedIn > Accounts so the connection picks up the session carrying Sales Navigator), then re-check once more. Reconnecting is safe — campaigns stay pointed at the same account and resume. Other causes to rule out: you connected a DIFFERENT account than the one that owns the list (a saved list is only visible to the account that created it or was given access), or the account genuinely has no Sales Navigator (a LinkedIn Free/Premium account can't open a Sales Navigator list at all). Which account: each connected account shows a plan badge (Sales Navigator, Recruiter, Premium, or Free) on the import screen and on LinkedIn > Accounts — pick the one badged Sales Navigator and make sure it owns the list. Reliable fallback: a regular LinkedIn people-search link imports on ANY connected account including Free (no Sales Navigator needed) — run your search, copy the link from the address bar, paste it into WarmySender. 8-question FAQPage-structured FAQ covers "do Sales Navigator lists actually import?" (yes — when the connected account is carrying Sales Navigator access), "I pay for Sales Navigator and it's active — why is my list empty?" (the account came back without access after a reconnect; re-check it), "my account shows Premium but I have Sales Navigator — what do I do?" (click Re-check Sales Navigator access), "where is the Re-check Sales Navigator access button?" (on the import screen, next to the account you're importing with), "the re-check didn't find Sales Navigator — now what?" (reconnect with Sales Navigator open in the same browser), "which account do I use?" (the one badged Sales Navigator that owns the list), "can I import from a regular search instead?" (yes — the reliable fallback, works on any account), and "I re-checked and reconnected and it still won't import — what now?" (browser-check the list link on the connected account; contact support if the account shows Sales Navigator and the browser shows the list but the import is empty). Internal links to /documentation/what-happens-to-my-campaigns-when-i-reconnect-linkedin, /documentation/find-your-ideal-leads-with-filters, /documentation/why-my-linkedin-imported-leads-arent-getting-emails, /documentation/how-to-personalize-linkedin-messages, /documentation/linkedin-sending-limits-and-account-tiers, /linkedin/accounts, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-07-04, rewritten 2026-07-07 for the one-click Re-check Sales Navigator access button. - Why aren't my LinkedIn-imported leads getting emails? (the #1 "my campaign isn't sending emails" cause — imported LinkedIn leads usually have no email address, so email steps are skipped; add emails and they send): https://warmysender.com/documentation/why-my-linkedin-imported-leads-arent-getting-emails — Plain-language self-serve doc for the most common "my campaign isn't sending emails" question. Core explanation: leads imported from LinkedIn usually don't come with an email address (a LinkedIn profile doesn't expose a work email), so an imported contact arrives with a name, title, company, and LinkedIn profile but NO address — and a campaign's EMAIL steps are skipped for a contact with no address (there's nothing to send to), while their LINKEDIN steps still run (connection requests, messages, which only need the profile). So the campaign isn't broken — a multichannel campaign built from LinkedIn contacts does all its LinkedIn work while the email side stays quiet, which is exactly what you'd see if you expected emails and the contacts have no addresses. WarmySender never invents an address or sends to a blank one (that would bounce and hurt sender reputation), and the skip is per-contact — everyone in the same campaign who DOES have an email still gets the email steps, and the sequence keeps moving. How to fix (give those contacts an email, two ways — these are the ONLY two; WarmySender has no per-profile email lookup and none is planned): (1) import a list that already includes emails — bring in a CSV with an email column and match it (existing contacts gain the email; new people are added with theirs); (2) build the list from the built-in Leads Database instead — searching and filtering 200M+ business contacts is free and results stay masked, and a contact's email address is revealed when you save it to a list, which draws on your plan's monthly lead allowance. Once a contact has a valid address, the email steps send automatically on the next send cycle within your sending window — no rebuild, no re-enrollment. Tip: verify addresses before a big send to keep the list clean and protect reputation ("Unknown" results are always free) — verification CHECKS an address you already have, it never finds a missing one. Worked example: import 200 people from a LinkedIn search into a campaign whose steps are connect → message → email; connection requests go out but sent-email stays at 0 because those 200 have no addresses; import a CSV that carries their emails (or rebuild that segment from the Leads Database), and the email step begins sending on the next cycle. 6-question FAQPage-structured FAQ covers "why isn't my campaign sending any emails?" (contacts have no address; add emails), "does a skipped email step mean it's broken?" (no — deliberate/safe), "will the LinkedIn steps still run without emails?" (yes), "how do I add emails to my LinkedIn contacts?" (import a list that already has them, or save contacts from the Leads Database), "will the email steps send automatically once I add emails?" (yes — next cycle, no rebuild), and "should I verify the emails first?" (good idea before a big send). Internal links to /documentation/why-my-sales-navigator-list-wont-import, /documentation/find-your-ideal-leads-with-filters, /documentation/what-email-verification-results-mean, /documentation/campaign-says-running-but-never-sends-any-emails, /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-07-04. - How do I get email addresses for my contacts? (the honest answer to "how do I actually get emails for these people?" — the two real paths, and a plain statement that there is NO per-profile email lookup): https://warmysender.com/documentation/how-do-i-get-email-addresses-for-my-contacts — Plain-language self-serve doc. Core explanation: there are exactly TWO ways a contact gains an email address in WarmySender. (1) Build the list from the built-in B2B leads database — searching and filtering 200M+ business contacts is FREE, results stay MASKED while you browse (you see name, job title, company, location; the address is hidden), and the email address is REVEALED when you save a contact to a prospect list, which uses one lead from your plan's monthly allowance (contacts you already saved are free to save again). This is the single most misunderstood thing in the product: customers search, see masked addresses, assume they are blocked, and go looking for an email-finder — saving is the step that reveals them, and nothing was blocking them. (2) Import a list that already includes the addresses — export from your CRM or a spreadsheet, import the CSV on the Prospects page, map the email column; people already in your account are matched to their existing record and gain the address, new people are added with theirs. What the Email Verifier does and does NOT do: it CHECKS an address you already have and returns Valid / Invalid / Risky / Unknown so you can send safely — it NEVER discovers a missing address, because with an empty email field there is nothing to check. Never describe verification as "finding" emails. WHY there is no "find this person's email" button, and none is planned: a LinkedIn profile does not reveal a work email, so any tool offering that is PREDICTING an address from the person's name and their company's address pattern; every wrong prediction becomes a bounce, and bounces are what mailbox providers use to decide whether future email reaches the inbox at all — a batch of invented addresses can undo weeks of warmup in one send. WarmySender would rather supply contacts whose addresses it actually holds and be straight about the ones it doesn't. A person you have no address for can still be reached with LinkedIn steps, which need only the profile. Allowances (spread evenly across the month so supply is steady all month and saved lists stay a size you can send to safely — today's amount tops back up every day, the monthly allowance resets on the billing anniversary): Pro 2,000 leads/month (~66/day) and 600 verifications/month (~20/day); Enterprise 30,000 leads/month (~1,000/day) and 3,000 verifications/month (~100/day). One-time lead credit packs top up beyond the free allowance, never expire, are not affected by the daily pace, and are used only once the plan allowance is spent. "Unknown" verification results are always free. LinkedIn-imported contacts: they usually arrive with no email address, which is expected; a campaign shows a warning naming how many are affected and skips their email steps rather than sending to a blank address (which would bounce), while their LinkedIn steps run normally and everyone else in the campaign who does have an address still gets the email steps. Fix by importing a list carrying their addresses, or rebuilding that segment from the leads database. Once a contact has a valid address the email steps send on the next cycle — no rebuild, no re-enrollment. 6-question FAQPage-structured FAQ covers "how do I get email addresses for my contacts?" (leads database reveal-on-save, or import), "is there a tool that looks up someone's email from their name or LinkedIn profile?" (no, and not planned — guessing bounces), "why are the email addresses hidden when I search?" (browsing is free; saving reveals), "can the Email Verifier find a missing email address?" (no — it checks addresses you already have), "why can I only save a certain number of leads each day?" (monthly allowance spread across the month; credit packs skip the pace), and "once a contact has an email address, do I need to rebuild my campaign?" (no — next cycle). Internal links to /documentation/why-my-linkedin-imported-leads-arent-getting-emails, /documentation/find-your-ideal-leads-with-filters, /documentation/leads-database-quality-and-freshness, /documentation/why-do-verified-emails-still-bounce, /documentation/what-email-verification-results-mean, /leads, /email-verifier, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-08-03. - Why is my contact count higher than my lists? (the "my lists only add up to 3,443 but it says 10,000/10,000 full" confusion — contacts not in any list, most often LinkedIn imports, still count toward your plan limit; review them in the new "Not in a list" view): https://warmysender.com/documentation/why-is-my-contact-count-higher-than-my-lists — Plain-language self-serve doc for the customer who notices their total contact count is higher than the sum of their named lists. Core explanation: every contact in the account counts toward the plan's contact limit whether or not it's in a named list; lists are only an organizing tool, and a contact can exist without belonging to any list. The most common source is LinkedIn imports — people brought in from LinkedIn are added to the account (so you can reach them) but are NOT automatically placed in a named list; a few other flows can add contacts without a list too. Those contacts don't appear in any list count but still take up space, so plan usage reads higher than the lists add up to, by exactly the number of contacts not in a list. How to see them: go to the Prospects page and click "Not in a list" in the lists sidebar on the left — a view that gathers every contact not in any named list and shows its own count (it appears only when such contacts exist). Three things you can do there: (1) ADD THEM TO A LIST — select and add to a new/existing list to organize them; keeps the contacts, so the total is unchanged, just filed where you can use them in campaigns; (2) REMOVE THE ONES YOU DON'T NEED — delete contacts you won't reach out to; removing frees a slot against the plan limit, the way to make room WITHOUT upgrading; (3) UPGRADE — move to a plan with a larger contact limit to keep everyone. Key nuance: adding to a list organizes (total stays the same) while removing contacts (or upgrading) is what changes how much room you have. Worked example: named lists add up to ~3,443 but the Prospects page usage says 10,000 / 10,000 (full) — the gap is contacts not in any list (often LinkedIn imports); open "Not in a list" to see who they are, then organize, remove, or upgrade. 4-question FAQPage-structured FAQ covers "why is my contact count higher than my lists?" (every contact counts whether or not in a list; LinkedIn imports arrive without a list), "do LinkedIn contacts count toward my limit?" (yes — added to the account and counted even without a list), "how do I free up space without upgrading?" (remove contacts you don't need from "Not in a list"; adding to a list doesn't change the total), and "where do I find the Not in a list view?" (Prospects page, lists sidebar on the left). Internal links to /documentation/why-my-linkedin-imported-leads-arent-getting-emails, /documentation/reuse-existing-contacts-in-a-new-campaign, /documentation/find-your-ideal-leads-with-filters, /documentation/upgrading-your-plan-and-proration, /documentation. Account safety: pure documentation; zero outbound API surface. Built 2026-07-21. - Safe cold email sending limits after warmup (how much cold email you can safely send per day per mailbox once fully warmed — Gmail / Microsoft / Yahoo — plus whether to keep warmup on, the ongoing warmup-to-cold ratio, how long warmup takes, and the reputation floor): https://warmysender.com/documentation/safe-cold-email-sending-limits-after-warmup — Best-practice deliverability guide (guidance, not guarantees) grounded in how WarmySender's warmup ramps. Headline rule of thumb: once a domain is fully warmed, send up to roughly 30-50 cold emails per day PER MAILBOX and grow total volume by ADDING more mailboxes (ideally across more than one sending domain) rather than pushing any single one harder; keep warmup running afterwards; and never drop an active mailbox to zero. Per-provider conservative cold-send ceilings to ramp toward: free Gmail (@gmail.com) ~20-30/day (most sensitive — a paid Google Workspace address on your own domain is a better foundation); Google Workspace on your domain ~30-50/day with SPF/DKIM/DMARC passing; Microsoft (Outlook / Microsoft 365) ~25-40/day (a bit stricter — authentication matters a lot); Yahoo/AOL ~20-30/day. WarmySender always PACES sends across the day and sending window (a sudden burst is one of the strongest automation signals to inbox providers), so scale by mailboxes (500/day is far safer as ten mailboxes at ~50 than one at 500). Keep warmup ON as ongoing maintenance because reputation is a running average providers keep re-evaluating — a steady trickle of genuine wanted email holds your baseline and cushions the odd complaint; recommended ongoing ratio roughly 1 warmup email per 2-4 cold emails per mailbox (about a quarter to a half of daily cold volume); you don't need warmup to match cold volume once established, just don't turn it off. How long warmup takes: most mailboxes reach a healthy established state in about 2-3 weeks, and a brand-new domain is best treated as fully aged closer to 4-6 weeks — WarmySender starts a new domain very low (around one email a day) and ramps up gradually while bounce/complaint signals stay healthy, reaching a steady target after about a month; the ramp can't be skipped (pushing harder to finish faster harms a young domain) and an older already-reputable domain warms faster. Minimum reputation floor: don't let an active mailbox sit at zero — keep at least ~5-15 emails a day (cold, warmup, or both combined) because reputation fades with silence and a sudden return after a quiet spell looks like a brand-new sender; keeping warmup running covers this floor on its own, especially when you pause cold campaigns between lists. Best-practice checklist (authenticate with SPF/DKIM/DMARC; scale with mailboxes not brute force; let sends pace across the day; keep warmup on; keep the list clean and verified; never drop to zero). 6-question FAQPage-structured FAQ covers "how many cold emails per day from a fully-warmed domain?" (~30-50/mailbox with per-provider numbers), "should I keep warmup running after fully warmed?" (yes — 1 warmup per 2-4 cold), "how long until fully-aged?" (2-3 weeks healthy, ~4-6 weeks for a new domain), "minimum daily volume to keep reputation healthy?" (a 5-15/day floor; warmup covers it), "how do I safely send more than the per-mailbox limits?" (add mailboxes across domains), and "are these guaranteed safe limits?" (no — guidance; depends on authentication, list quality, content, and recipient reaction). Internal links to /documentation/how-your-warmup-daily-volume-is-decided, /documentation/how-your-warmup-daily-volume-is-decided, /documentation/understanding-your-warmup-inbox-rate, /documentation/campaign-says-running-but-never-sends-any-emails, /blog/deliverability, /documentation. Account safety: account safety wins — sending stays paced and per-mailbox ceilings stay conservative to protect deliverability; pure documentation; zero outbound API surface. Built 2026-07-04. - Safe daily cold-email volume after warmup — the day-to-day operating picture (running warmup alongside cold sending, the tagged warmup mail in your inbox, and the automatic slowdown when a mailbox's spam rate climbs): https://warmysender.com/documentation/safe-daily-cold-email-volume-after-warmup — DERIVED PAGE. The canonical answer to "how many cold emails can I send per day", including the week-by-week table that separates what the platform ENFORCES from what we RECOMMEND, is https://warmysender.com/documentation/how-many-cold-emails-can-i-send-per-day, and every number on this page is that page's number. CORE ANSWER: 30-50 cold emails a day per mailbox once warmed up, and 50 is the default; that is a recommendation, not a limit — the per-mailbox daily limit is settable 1-500. The limits that ARE applied: a brand-new sending domain is held to 200 emails a day across EVERY mailbox on it (warmup included) until it is 30 days old with 200 sends behind it and no spam complaints, then 2,000 a day; each mailbox also has one daily total shared by warmup and cold, between 200 and 500 depending on plan. On a young domain extra mailboxes SPLIT the same 200 rather than adding to it. NO PER-PROVIDER SPLIT EXISTS: neither Google, Microsoft nor Yahoo publishes a per-mailbox daily cold-email limit, so any "Gmail 30-50 / Outlook 20-40 / Yahoo 20-30" table is guesswork — this page removed the one it used to publish. WHAT THE PROVIDERS ACTUALLY PUBLISH, cited and linked inline on the page: Google — spam rate below 0.3% with a 0.10% target, extra requirements (full authentication plus one-click unsubscribe) above 5,000 messages a day to Gmail accounts, and volume guidance that is one sentence (start low with engaged recipients, increase slowly); Microsoft — 5,000 or more a day to its consumer mailboxes from one domain requires SPF, DKIM and DMARC (p=none minimum) to pass or the mail is refused, and the requirement keeps applying once a domain has crossed the threshold; Yahoo — spam rate below 0.3%, SPF or DKIM for all senders and both plus DMARC p=none for bulk, one-click unsubscribe, and NO numeric volume threshold published at all. None publishes a day-by-day warmup ramp. WARMUP ALONGSIDE COLD: leave warmup on permanently; you do not pick a number — once a mailbox is established maintenance settles around 30 emails a day by itself, and warmup comes out of the same per-mailbox daily budget as campaigns. TIME TO FULLY WARMED: a new domain reaches full warmup speed (40 a day) around the SIXTH WEEK OF SENDING DAYS — about 7 a day by end of week 1, 15 by week 2, 21 by week 3, 40 by week 6 — counting sending days, not calendar days, because warmup only advances on days the mailbox actually sends; an established-domain mailbox starts higher and can reach 60. Nothing blocks launching a campaign sooner (no warmup gate exists on cold sending); waiting about three weeks of sending days is guidance, not a rule. WARMUP MAIL IN YOUR INBOX: it arrives by design, is clearly TAGGED so you can recognise and filter it, and is AUTO-TIDIED within about a day — so any UNTAGGED reply is a real person; warmup health is measured from warmup activity separately and never distorts campaign statistics. SPAM-RATE PROTECTION: once about 5% of a mailbox's warmup mail lands in spam its daily warmup volume is automatically eased back while placement recovers, and past roughly 15% it is kept out of the pool other people's warmup is sent to — BOTH JUDGED PER MAILBOX, not per domain, so a held-back mailbox does not stop healthy ones including others on the same domain; a brand-new mailbox is not judged on a couple of emails. Cold-send from it only once the rate is back into the low single digits. 6-question FAQPage-structured FAQ mirrors the page one for one. Internal links to /documentation/how-many-cold-emails-can-i-send-per-day, /documentation/safe-cold-email-sending-limits-after-warmup, /documentation/how-your-warmup-daily-volume-is-decided, /documentation/how-your-warmup-daily-volume-is-decided, /documentation/understanding-your-warmup-inbox-rate, /documentation/why-warmup-emails-appear-in-your-inbox, /documentation/how-your-warmup-daily-volume-is-decided, /documentation/do-i-need-to-verify-my-list-before-i-send, /blog/deliverability, /documentation. Account safety: sending stays paced, the recommendation stays conservative, and an elevated-spam-rate mailbox is auto-slowed to protect it; pure documentation, zero outbound API surface. Built 2026-07-11, rewritten 2026-09-06 to match the canonical page. - Why are my campaign emails being rejected? (two-kinds explainer: your own sending provider vs the recipient's inbox): https://warmysender.com/documentation/why-emails-are-being-rejected — Plain-language self-serve doc that splits email rejections into TWO distinct kinds with a different fix for each, and shows how to tell them apart. KIND A — rejected by your OWN sending provider BEFORE the email leaves your mailbox: your outgoing mail host's outbound spam filter blocked the message as spam at send time, so it never reached the recipient at all. This is the "my sending provider rejected as spam" / "outgoing mail host blocking my emails" / "emails rejected before they leave" case. Tell-tale: the campaign shows attempts but 0 delivered (campaign sending zero), across many different recipients at once including big providers like Gmail, with nothing at all getting through. Fixes in order: (1) check whether your sending mailbox uses a budget/shared mail host with a strict outbound filter — move to a dedicated sending domain on a reputable sending host built for outreach; (2) soften the content — avoid fake "Re:" / "Fwd:" subject prefixes on first-touch cold emails, spammy words, ALL CAPS, link shorteners, attachments; run the copy through a spam-content checker (Mail-Tester); (3) make sure warmup has been running on the mailbox and the domain is older than ~30 days; (4) lower daily volume and ramp slowly (20-30/day per mailbox); (5) confirm SPF / DKIM / DMARC are set. KIND B — rejected at the RECIPIENT's inbox: the message left your mailbox cleanly but the receiving inbox provider (Gmail, Outlook, Yahoo, corporate) refused to deliver it based on your sending reputation — not a WarmySender bug. Distinguishes rejection from soft-bounce and no-such-mailbox, then walks through the five concrete deliverability levers in order of impact: (1) SPF / DKIM / DMARC DNS records on the sending domain (non-negotiable, first thing every sender should set), (2) sending domain older than 30 days with warmup running on every attached mailbox from day one, (3) reduce send volume per day per mailbox + slow the ramp (20-30/day starting cap, weekly increases only if rejection rate stays below 2%, spread across multiple domains to scale), (4) personalize subject lines + avoid spam-trigger words (FREE, URGENT, all caps, excessive exclamation, link shorteners, attachments) — recommend Mail-Tester for content scoring, (5) blocklist hygiene via MXToolbox (Spamhaus / SORBS / Barracuda / etc.) with delisting flow if listed. Quick rule of thumb to tell which side: total ZERO delivered across many different recipients (incl. Gmail) = almost always your OWN sending provider (KIND A); SOME emails delivering while others are rejected = the recipient side and your sending reputation (KIND B). How the dashboard surfaces the rejection rate so the trend is visible across a campaign. Common phrasing variations so AI tools can answer adjacent questions ("emails not delivering", "campaign sending zero", "campaign shows sent 0 even though it's running", "my sending provider rejected as spam", "outgoing mail host blocking my emails", "emails rejected before they leave my mailbox", "prospects not contacted", "550 spam rejected", "mail returned to sender", "address rejected"). 7-question FAQPage-structured FAQ covers why a campaign shows sent 0 while running with a healthy mailbox (sending-provider block on the sending side — see KIND A), how to tell if YOUR provider is blocking vs the recipient (total-zero-across-providers = sending side; partial-delivery = recipient side), whether this is a WarmySender problem (no), DNS propagation timing for SPF / DKIM / DMARC fixes (24-48h), what to check when domain age + warmup are already in place (volume spike / content / blocklist), whether more warmup helps (no — let it run on its curve), and rejected-prospect re-attempt behaviour (no auto-retry; re-import after reputation recovers). Internal links to /documentation/how-your-warmup-daily-volume-is-decided, /documentation/why-was-this-prospect-skipped-bounce, /documentation/provider-blocks, /documentation/smtp-tenant-disabled, /documentation/connect-microsoft-365-mailbox, /documentation/connect-gmail-workspace-alias. Account safety: pure documentation; zero outbound API surface. Built 2026-05-28, two-kinds split added 2026-06-09. - Why were my emails rejected as spam before sending? (the campaign paused with "messages were rejected" — the customer's OWN email host refused the message on its OUTGOING spam filter, so the fix is the message, never the contact list): https://warmysender.com/documentation/why-were-my-emails-rejected-as-spam-before-sending — Plain-language self-serve doc for the customer whose campaign shows "Paused — messages were rejected" and who reasonably assumes their list is bad. CORE FACT: many email hosts filter OUTGOING mail as well as incoming; when one decides a message looks promotional it refuses to send it, so nobody receives it and no recipient's mail service was ever asked. That is NOT a bounce and says nothing about the address. HOW TO TELL: the rejections cluster on one or two STEPS of the sequence while the other steps sail through to the same people on the same day; many of the affected contacts have already OPENED an earlier email in the same campaign; and a freshly verified list is affected just as much, because the addresses were never the problem. USUAL CAUSES in order of likelihood: (1) links — especially shortened links, links to a new or unfamiliar domain, or several links in one short email; (2) promotional and discount wording — promo codes, percentages off, "limited time", "free", prices in the subject; (3) image-heavy or heavily designed HTML with little real text; (4) sending-domain setup not authorising the mail; (5) volume and pace on a shared mail host whose outgoing filter is strict about anything campaign-shaped. HOW TO TEST A FIX: change one thing at a time — find the affected steps, write a link-free version of those steps (ask for a reply instead of a click), strip the design back to plain short text, send to twenty or thirty contacts and watch, then click Resume on the campaign, then reintroduce a link on a LATER step only once the earlier ones are landing. WHEN TO CONTACT THE EMAIL HOST: if a plain, link-free, personally written email to a handful of contacts is still refused, ask the mailbox provider whether outgoing mail is being filtered and what triggered it, whether the account or plan limits outgoing volume, and what part of the message was objected to — they can see the reason, WarmySender can only see that it was refused. WHAT WARMYSENDER DOES: pauses that campaign on purpose (sending a refused message repeatedly costs sending reputation for nothing); NOBODY is marked bounced and nobody is blocklisted because of this; the customer's other campaigns keep running; the bounce rate is unaffected because these are not bounces. DELIBERATELY ABSENT: any instruction to re-verify or clean the contact list — that was the wrong advice this page exists to replace. Internal links to https://warmysender.com/documentation/why-emails-are-being-rejected, https://warmysender.com/documentation/why-did-my-campaign-pause-for-bounces, https://warmysender.com/documentation/how-to-see-emails-that-didnt-get-delivered, https://warmysender.com/documentation/how-warmup-protects-your-deliverability, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — this is a Cold Emailing page and applies to email steps only. Account safety: the pause is unconditional and resuming is always the customer's decision; pure documentation, zero outbound API surface. Keywords: messages were rejected, rejected as spam before sending, campaign paused messages rejected, my host blocked my email, outgoing spam filter, email rejected before it was sent, not a bounce, links in cold email, promo code spam filter. Built 2026-09-05. - My sending domain shows on a blocklist — what does it mean and what do I do? (vendor-neutral explainer: community spam lists, why a new domain gets listed without wrongdoing, how to check + request removal, and that warmup builds reputation over time): https://warmysender.com/documentation/my-sending-domain-shows-on-a-blocklist — Plain-language self-serve doc for the customer who finds their sending domain or sending address on a blocklist (also called a spam list, blacklist, or abuse list). Core reassurance: a blocklist is a public, community-run list that many email systems consult as ONE signal among many when placing mail, and appearing on one does NOT automatically mean wrongdoing — it's a cautious flag, not a verdict, and most listings can be cleared. Explains why a BRAND-NEW sending domain can get listed with no rule-breaking at all: it's new and unproven (no track record yet), it shares space with other senders (a shared service or address range, where unrelated senders' past behavior can spill over), volume ramped up too quickly (a sudden zero-to-lots jump looks unusual to automated systems), or a previous owner of the domain name left an older listing behind. How to CHECK it yourself for free in a couple of minutes: use a free public lookup such as MXToolbox (named only as one generic example — other reputable checkers work too), enter the sending domain AND the mail host you send through, read which lists (if any) flag you, and note exactly which list so you can act on the right one; checking both domain and host shows where the entry actually lives. How to request REMOVAL (delisting), kept deliberately vendor-neutral because each list runs its own process: go to the specific list that flagged you (the lookup usually links straight to it), find its own removal/delisting form, address whatever reason it cites FIRST, then submit the request honestly — some lists clear automatically after a quiet period, others review by hand and take time; do not fix the symptom and skip the cause or you can simply be re-listed. WarmySender canNOT remove an outside list's entry for the customer (those lists are independent, self-serve), but it helps avoid listings and recover from them. The LASTING fix: keep volume gentle (sudden spikes are a top trigger), let warmup run (it steadily exchanges wanted email so the domain earns a genuine, trusted track record over a few weeks — the same thing that wins inbox providers also clears community lists), and be patient and consistent (a steady modest rhythm beats a burst-then-silence; read the trend over a couple of weeks, not one day). Why passing SPF/DKIM/DMARC HELPS: all three set up and passing is a strong positive signal that the domain is a real, properly-configured sender — good news that works in the customer's favor for both delisting and inbox placement; if not yet set up, configuring them is one of the most worthwhile first steps. What WarmySender does on its side: warmup ramps volume gently rather than all at once (so listings are less likely in the first place) and eases off automatically at signs of trouble rather than pushing through — building the healthy sending history that keeps the customer off these lists. 7-question FAQPage-structured FAQ covers "is a listing my fault?" (not necessarily — often just new/unestablished), "how do I check?" (free public lookup like MXToolbox), "how do I get removed?" (the specific list's own form + fix the cause), "can WarmySender remove it for me?" (no — self-serve outside lists; warmup helps avoid + recover), "will warmup help?" (yes, over time — keep volume gentle), "does SPF/DKIM/DMARC matter?" (yes — passing is a strong positive signal), and "I was removed but listed again — why?" (the underlying pattern is still happening; pair removal with gentle ramp + warmup). Internal links to /documentation/why-emails-are-being-rejected, /documentation/how-your-warmup-daily-volume-is-decided, /faq/deliverability, /blog/deliverability, /mailboxes. Account safety: warmup paces volume gently to protect sender reputation; account safety wins over speed. Vendor-neutral throughout — no named "lists we check", no response codes. Built 2026-06-24. - Why is my email blocked by Microsoft or Outlook? — clears up the common misconception that email warmup blocks or unblocks a sending IP, and explains the real driver of Outlook.com / Office 365 rejections: the reputation of the IP your mail is SENT FROM. https://warmysender.com/documentation/why-is-my-email-blocked-by-microsoft-or-outlook — Plain-language self-serve doc. Core message: a Microsoft hard rejection is a decision about your sending IP and domain reputation, made before warmup enters the picture; warmup sends low volumes to genuinely-engaged inboxes and cannot get an IP blocked or force a blocked IP to be accepted. Most common real cause is a shared sending IP — domains on web/cPanel shared hosting (Namecheap, Hostinger, GoDaddy) send through an IP shared with many other unrelated websites, and Microsoft throttles/blocks shared IP ranges based on the aggregate behavior of everyone on them, so clean mail gets caught in another tenant's block. How to confirm: read the exact bounce, which names the refused IP and a review link. Fixes in priority order: (1) connect a Microsoft 365 or Google Workspace mailbox directly so mail leaves via Microsoft's/Google's own trusted infrastructure, (2) ask your host about a dedicated sending IP or use a managed sending service, (3) configure SPF/DKIM/DMARC (necessary but not sufficient — does not override a blocked IP), (4) follow any delisting link, though shared-IP outcomes are not fully controllable. Explicit warmup CAN/CANNOT list. Internal links to /documentation/connect-microsoft-365-mailbox, /documentation/deliverability, /documentation/domain-reputation-monitoring, /documentation/why-emails-are-being-rejected, /documentation/provider-blocks. Built 2026-06-20. Account safety: pure documentation; zero outbound API surface. - Importing large contact lists — what to do if a very large contact import (about 5,000 contacts or more) shows "Failed to start import," and how big imports work: https://warmysender.com/documentation/importing-large-contact-lists — Plain-language self-serve doc. Core message: an issue that could stop very large contact lists (roughly 5,000+ contacts) from starting to import has been fixed; if you saw "Failed to start import. Please try again" on a big list, simply open the list and import it again — it now starts normally, and smaller lists were never affected. Explains that large lists are brought in for you in the background (so the screen never freezes), with a progress bar at the top of the Contacts page that you can leave running while you keep working anywhere else in the app, and a notification/updated count when it finishes. Preparation tips: use a CSV with a header row (Email, First Name, Last Name, Company; Email is the key column), keep values clean, and know that duplicates — both repeats within the file and contacts already in your account — are recognized automatically so re-importing never creates duplicate contacts. Notes that very large files (tens of thousands of contacts) are supported and may take a few minutes. FAQPage-structured FAQ covers "is there a limit to how many contacts I can import?" (no small cap; very large lists run in the background), "my large import said Failed to start — what do I do?" (fixed; import again, contact support if it persists), "how do I know when a big import is finished?" (watch the progress bar; count updates when done), "can I keep using the app while it imports?" (yes — runs in the background, you can even close the page), "will importing the same list twice create duplicates?" (no — repeats and existing contacts are recognized), and "what file format should I use?" (CSV with a header row, email in its own column). Internal links to /documentation/getting-started and /documentation/csv-import where relevant. Built 2026-06-22. Account safety: pure documentation; zero outbound API surface. - Warmup bounce handling — how WarmySender protects mailboxes from cascade-pause caused by misclassified NDRs: https://warmysender.com/documentation#warmup-bounce-classification — 4-layer defense ( sender-side error classifier, retry-warning skip in the scanner, N≥2 distinct-sender corroboration gate before any blocklist write, cascade-pause sentinel firing within 5 min if a storm starts). A single misclassified bounce — retry-warning, sender-domain-not-verified, transient delay — cannot poison the global blocklist or pause customer mailboxes in the recipient domain. Layer 2 () skips mailer-daemon retry-warnings ("delayed N hours, still being retried") before they reach the bounce classifier. Layer 3 () requires two independent sender mailboxes to report a bounce for the same recipient domain within 60 minutes before any blocklist entry is added; single-sender bounces are tracked but NOT acted on. Layer 4 () sentinel alerts admins within 5 minutes if more than 5 mailboxes flip to pause_reason='recipient_domain_bounce' in a 5-min window. Companion in-repo doc: /docs/WARMUP-SYSTEM.md#bounce-classification-4-layer-defense. - Mailbox Reconnection — when and how to reconnect (Reconnect Required badge / banner explainer): https://warmysender.com/documentation#mailbox-reconnection — Plain-language self-serve doc covering the four trigger conditions that flag a mailbox for reconnection in WarmySender (mailbox.status='needs_reauth', mailbox.status='error' with an auth-class last error like 534-5.7.14 / 535 / 5.7.139 / "Please log in via your web browser" / OAuth-token-revoked, structured pause_reason in auth_failure / auth_errors / tenant_smtp_disabled / provider_block / hostinger_reauth_required / mailbox_disconnected, OR warmup paused/error AND auth-class last error). Provider-specific recovery paths (Gmail / Google Workspace → click "Update credentials" and paste a fresh App Password — Gmail connects with an App Password over IMAP/SMTP, not a Google sign-in; Outlook personal/Workspace → "Reconnect with Microsoft" OR for error 5.7.139 the M365 admin must enable Authenticated SMTP via Admin Center → Active Users → Mail → Manage Email Apps; Custom IMAP/SMTP — Hostinger / Zoho / Yahoo / Fastmail / self-hosted — "Update credentials" with a fresh App Password or password). What happens to warmup + active campaigns + inbox sync while the mailbox is unreconnected (warmup pauses immediately, the mailbox is removed from the cross-customer peer pool so other users' warmup doesn't bounce off dead credentials, active campaigns skip the affected mailbox for new sends but keep running on the user's other healthy mailboxes, inbox sync pauses and resumes from the gap on next cycle, ZERO data loss — warmup history, campaign membership, events all preserved). Expected recovery timing (under 1 minute for OAuth and credential refresh paths, up to 30 minutes for the M365 tenant SMTP AUTH propagation). No-email-from-WarmySender anti-phishing guarantee — the in-app surface (badge + banner + filter) is the only authoritative channel; any email asking the customer to "reconnect your mailbox" is not from WarmySender. Companion to the new premium Reconnect Required badge on the /mailboxes page and the dashboard Reconnect Required banner shipped 2026-05-16 — born from the bounce-cascade-unmask incident that revealed 11 pre-existing Gmail 5.7.14 / Zoho auth-credential failures masked behind a cascade pause for ~60 paying mailboxes. - Warmup Pipeline Health (how the dashboard counter, deliverability stats, and pause reasons work): https://warmysender.com/documentation#warmup-pipeline-health — Plain-language self-serve doc covering five practical questions about your email warmup numbers: (1) what the "Sent today" tile on the dashboard counts and why it resets at your mailbox's own local midnight rather than a single global midnight, so the count climbs through the day and starts fresh each morning, (2) why the inbox and spam percentages grow as the day goes on — each warmup message takes a few minutes (typically 3 to 30) to be received and detected, so the percentages reflect completed detections, not just sends, and are most accurate at end of day, (3) the warmup pause reasons and how to clear each one — an ended free trial (upgrade to a paid plan), a past-due payment (update your card; warmup resumes automatically within a few minutes once the payment goes through and your subscription is active again, with your earlier progress kept), a canceled or expired subscription (resubscribe), a disconnected inbox or repeated sign-in failures (reconnect the mailbox), and warmup switched off by you or a teammate (turn it back on from the Warmup page), (4) the warmup send window — the hours of the day, in your mailbox's local time, during which warmup is allowed to send (default is all day), (5) how a new mailbox's daily volume ramps up gradually from a small handful on day one toward your target over the first couple of weeks, so a low day-one count is the platform protecting your sender reputation, not a failure — plus a quick diagnostic checklist for when numbers look surprising. Includes a dedicated answer to "I fixed my billing but my warmup is still paused — what should I do?" at https://warmysender.com/documentation#warmup-paused-after-billing-fixed (warmup auto-resumes within a few minutes of a successful payment with progress preserved, and you can also switch each mailbox back on yourself from the Warmup page). Every channel — cold email campaigns, email warmup, LinkedIn, Instagram, and multichannel sequences — waits for an active plan before they run. Account safety: pure documentation; no outbound activity of any kind. - Can't sign in, or your sign-in code never arrived (WarmySender has NO passwords — sign-in is a 6-digit code emailed to you, or Google/Apple): https://warmysender.com/documentation/login-session-issues (also on the hub at https://warmysender.com/documentation#login-session-issues) — Plain-language self-serve doc and the canonical landing page for "I never got my sign-in code", "I'm not receiving the login code", "I'm locked out of my account", "how do I reset my password" (there is no password to reset), "my session expired", and "my account looks empty / I'm being asked to choose a plan I already pay for". How signing in works: enter your email address, we email a 6-digit code, type it in — that's the whole flow, every time; there is no password, nothing to forget and no "Forgot Password" link, so any page telling you to reset one is out of date. IF THE CODE HASN'T ARRIVED, quick checks first: look in spam/junk (marking it "not spam" helps future codes land), give it a minute (a busy email provider can add a short delay), and check the address you entered was the one your account is under. IF IT STILL HASN'T TURNED UP, the important guidance is: DO NOT keep requesting new codes — a new code travels exactly the same path as the last one and will do the same thing; sometimes the hold-up is at the customer's end and sometimes it is at ours, and either way there are four ways in that do not depend on the emailed code arriving. (1) SIGN IN WITH GOOGLE OR APPLE — the fastest way in: use "Login with Google" or "Login with Apple" on the sign-in screen; no emailed code is involved at all, and as long as it is the address the account is under it opens that same account with everything intact. (2) LET US FIND THE ACCOUNT — "Find my existing account" on the code screen (under "Not the email you expected?") checks which address the account is under and sends the code to the right place. (3) TRY ANOTHER ADDRESS YOU OWN — "Try another email address" on the code screen sends a code elsewhere, and a personal address often receives it when a work one does not; important caveat, signing in with an address never used before starts a NEW, EMPTY account rather than opening the existing one, so pick an address known to be on the account. (4) ON A WORK ADDRESS, ask whoever looks after your email to allow messages from hello@warmysender.com — company filters can hold or turn away mail before it ever reaches the inbox. OR EMAIL hello@warmysender.com from any address you can send from, with the address your account is under — we sort out access and chase down why the code did not reach you (that side is ours to fix, not the customer's); answered within 24 hours on business days. EXPIRED/INVALID CODE: codes are short-lived by design, so request a new one and use the most recent email (an older code will not work), and type the digits rather than pasting in case a stray space comes with it. ACCOUNT LOOKS EMPTY / ASKED TO CHOOSE A PLAN ALREADY PAID FOR: almost always signed in under a DIFFERENT email address (work vs personal, a different spelling, or an address that forwards into the same inbox) — nothing is lost; compare the address in Settings with the address on the billing receipt or card statement and use "Try another email address" to reach the right account; do NOT delete the empty-looking account (it will not stop billing and cannot be undone). ALSO COVERS: sessions last 30 days then need a fresh code (normal, not a fault); browser fixes (clear cookies/cache for warmysender.com, private window, disable cookie-blocking extensions, cookies must be enabled); multiple workspaces (use the workspace switcher); access limited to the Billing page after a subscription ends so it can be reactivated; a short wait after many rapid attempts; and workspace invitations (open the invitation email, sign in with the exact address it was sent to, ask the owner to check status in Settings > Team). Keywords: never got the sign-in code, code not arriving, not receiving login code, locked out of my account, sign in without a code, login with Google, login with Apple, find my existing account, try another email address, code expired, no password, forgot password, session expired, account looks empty. Account safety: pure documentation; zero outbound API surface. Updated 2026-08-11. - SEO & Indexing FAQ — how WarmySender's pages get discovered, crawled, rendered, and indexed by Google and AI assistants (covers SSR-for-crawlers vs SPA-for-users two-path architecture, the useHead head-manager, the 2-8 week Discovery → Crawl → Render → Index pipeline, what GSC's "Discovered, currently not indexed" / "Soft 404" / "Page with redirect" statuses actually mean on a WarmySender URL, how i18n category pages 404 instead of redirecting to English, how to share a WarmySender page on LinkedIn or X correctly with OG metadata, how to report an SEO issue to support@warmysender.com): https://warmysender.com/documentation/seo-and-indexing-faq — Companion to the May 16, 2026 GSC indexing-crisis fix bundle ( react-helmet-async silent context-split → custom useHead hook + Playwright smoke test, internal-link audit + CI sentinel against legacy URL re-discovery, i18n category-page 404 strategy). Account safety: pure documentation; zero outbound API surface. - Page Speed & Performance FAQ — how WarmySender is engineered for Core Web Vitals (covers bundle splitting, CSS-over-JS animations, font preload, lazy decorative components, regression sentinels): https://warmysender.com/documentation/page-speed-performance — Companion to /287 May 2026 CWV fix bundle. Account safety: pure documentation; zero outbound API surface. - SMTP Disabled by Microsoft Admin (M365 Security Defaults SMTP AUTH disabled-at-tenant scenario): https://warmysender.com/documentation/smtp-tenant-disabled — Plain-language self-serve doc covering the most common Microsoft 365 mailbox-health failure: the tenant administrator has SMTP AUTH disabled at the tenant level (the M365 Security Defaults default for all tenants created after late 2022). Diagnostic signals (error 5.7.139, "SmtpClientAuthentication is disabled for the Tenant"), why no user-side action helps (changing passwords, generating app passwords, reconnecting all fail until the tenant switch is flipped), the 4-step fix the M365 admin must perform (Admin Center → Active Users → select user → Mail tab → Manage Email Apps → tick Authenticated SMTP → Save → wait 60 seconds for propagation), tenant-wide PowerShell alternative (Set-TransportConfig -SmtpClientAuthenticationDisabled $false), how to confirm recovery (Reconnect button in WarmySender → first warmup send clears the sticky blocked health flag), and 6-question FAQPage-structured FAQ covering password changes, WarmySender vs Microsoft attribution, why Microsoft disables by default, per-user vs tenant-wide enablement, propagation timing, and provider-migration alternatives if the admin refuses. Companion to the new amber MailboxHealthBadge "SMTP Disabled by Admin" case (Stream E, May 9, 2026). - Connect a Gmail or Google Workspace alias-domain mailbox (App Password + IMAP/SMTP setup, alias-as-Username gotcha, smtp.gmail.com vs smtp.google.com typo fix, multi-alias warmup): https://warmysender.com/documentation/connect-gmail-workspace-alias — Customer-facing comprehensive guide to connecting a Gmail or Google Workspace alias-domain mailbox to WarmySender. Covers the full prep flow on Google's side (turn on 2-step verification on the primary account, generate a 16-character App Password at myaccount.google.com/apppasswords, confirm the alias is added in Workspace either as an alias-domain or as a per-user Send mail as alias, optionally add the alias in Gmail Settings > Accounts > Send mail as) then the WarmySender form fill (Custom IMAP/SMTP + App Password connection type, alias address in the Email address field, primary Google address in the Username field — the most-missed step — App Password in the Password field, server settings smtp.gmail.com:587 STARTTLS + imap.gmail.com:993 SSL pre-filled, click Test connection, click Save). The single most common typo (smtp.google.com / imap.google.com instead of smtp.gmail.com / imap.gmail.com — the real Gmail hostnames have "gmail" not "google") is called out with a dedicated section + Common-mistakes box; companion to the new connect-form one-click typo-fix that swaps "google" for "gmail" automatically. The alias-as-Username mistake (putting the alias address in the Username field instead of the primary Google account that owns the App Password — results in Authentication failed even with the correct password) is documented with the right mental model: Username = who's signing in, From = who the message looks like it's from. Plain-language explainer that an App Password is required (not the regular Google login password) for both primary and alias mailboxes, with 2-step verification turned on first (Google won't show the App Password page otherwise). How warmup uses the alias: messages addressed to the alias deliver to the primary inbox via Workspace alias routing, WarmySender's scanner identifies warmup messages by a hidden subject-line tag and archives them automatically so the day-to-day view stays clean. Troubleshooting section covers Authentication failed (3 causes in order of likelihood: wrong password, alias in Username, 2FA off), Could not connect to server (almost always the gmail-vs-google hostname typo), why Username and From are different fields by design, multi-alias warmup on the same Workspace account (each alias is a separate mailbox connection using the same Username + App Password but a different From), bounce notices from Google (Address not found = bad lead; daily sending limit exceeded = Gmail 500/day consumer or 2000/day Workspace cap; authentication failed on later sends = App Password was revoked, regenerate), where to generate App Passwords (myaccount.google.com/apppasswords with 2FA on the primary account), and why WarmySender needs IMAP access (reply detection + warmup recognition + bounce tracking; never reads personal mail). 11-question FAQ covers App Password vs OAuth, the Send-mail-as flavour, primary-inbox delivery, multi-alias support, day-1-to-day-14 warmup ramp, and the gmail-vs-google hostname distinction. Built 2026-05-21 as the canonical landing page for "how do I connect a Workspace alias" / "Gmail SMTP alias setup" / "smtp.gmail.com vs smtp.google.com" search queries. Account safety: pure documentation; zero outbound API calls described or implied. Companion to the new connect-form hostname typo-fix and to /documentation/connect-microsoft-365-mailbox (the Microsoft equivalent). - My Gmail App Password says "authentication failed" on the first tries — where's the problem? (2-Step Verification on + App Password created but mailbox reads auth failed at first; reassures it's not a setup mistake and names the three common easy fixes): https://warmysender.com/documentation/gmail-app-password-says-auth-failed — Reassuring, plain-language self-serve doc for the customer who turned on 2-Step Verification and created a 16-character Google App Password but whose mailbox still shows "authentication failed" on the first few tries. Core reassurance: a brand-new Google App Password is correct the moment Google shows it to you, so a first-try failure almost NEVER means the setup was done wrong — it's almost always one of three small, easy-to-fix things, and the customer does NOT need to delete the mailbox, change server settings, or restart the Google setup. CAUSE A — the spaces in the App Password got pasted in: Google displays the password as four blocks like "abcd efgh ijkl mnop" but those spaces are display-only, not part of the password, and some setups reject the password if the spaces are included; FIX: enter it as one continuous 16-character string ("abcdefghijklmnop"), and note that WarmySender now strips those spaces for you automatically on paste though removing them yourself is the surest fix. CAUSE B — Google is running a quick one-time security check on a brand-new App Password / a sign-in from a new place: right after 2-Step Verification is turned on and the App Password is created, Google sometimes holds the very first connection for a short security review, which can read as "authentication failed" for a few minutes even though the password is correct; FIX: wait about 10–15 minutes, open the "security alert" / "new sign-in" email Google sends to that account and confirm "Yes, it was me" (or approve the prompt on the phone), then connect again — this is exactly why "I tried again a little later and it just worked" is such a common outcome. CAUSE C — the normal Google login password was used instead of the App Password: with 2-Step Verification on, the everyday login password won't connect an app; FIX: use the 16-character App Password generated at myaccount.google.com/apppasswords (2-Step Verification must be ON first or Google won't show the App Password page; Google only shows the password once, so create a fresh one if it was lost). Still-stuck path: double-check the email address for typos, and for a Workspace alias mailbox confirm the Username is the PRIMARY Google account that owns the App Password (not the alias address) — links to /documentation/connect-gmail-workspace-alias for the full field mapping; if it still fails after waiting and approving, just reply to support and we'll look at the specific mailbox (no call needed). Clarifies a first-try auth-failed during setup has NO effect on warmup history or campaigns (the mailbox hasn't started running yet) — once it connects, warmup begins on its normal gentle ramp and the mailbox is ready for cold email campaigns, while already-connected mailboxes and LinkedIn outreach are unaffected; and distinguishes this first-try setup error from an already-connected mailbox briefly showing a connection problem (that's the temporary provider-side hiccup covered at /documentation/why-are-my-mailboxes-reconnecting). 8-question FAQPage-structured FAQ covers "I set up 2FA and an App Password but it still says auth failed — what's wrong?" (one of the three easy fixes), "do I need to remove the spaces?" (yes, safest), "it failed at first but worked later — why?" (Google's one-time security check), "which password do I use?" (the 16-character App Password, never the normal login password), "how long should I wait before trying again?" (about 10–15 minutes plus approve Google's sign-in email), "is my account broken / did I do something wrong?" (almost certainly not), "does this affect my warmup or campaigns?" (no), and "I'm connecting a Workspace alias and it still fails — what should I check?" (Username must be the primary account that owns the App Password). Internal links to /documentation/connect-gmail-workspace-alias, /documentation/why-are-my-mailboxes-reconnecting, /documentation/why-account-shows-connected-but-not-sending, and /mailboxes. Built 2026-06-10 as the canonical landing page for "App Password says authentication failed" / "Gmail app password not working" / "2FA on but mailbox auth failed" search queries; complements (does not duplicate) the full alias connection guide. Account safety: pure documentation; zero outbound API calls described or implied. - Connecting mailboxes that don't use an App Password — hosting / IMAP providers (which password to use, do I need 2FA, what to do if reconnect says "authentication failed"): https://warmysender.com/documentation/connecting-mailboxes-without-app-passwords — Customer-facing self-serve doc and the canonical landing page for "do I need an app password for my host?" / "my provider has no app password setting" / "connect IONOS / Strato / All-Inkl / Hostinger / cPanel mailbox" / "what password do I use for my hosting email" search and AI-assistant queries. Core message up front: Gmail and Outlook are the EXCEPTION, not the rule — they require a special App Password (which you can only create after turning on 2-Step Verification), but MOST other email providers do NOT use App Passwords at all. Hosting and IMAP providers — like All-Inkl, IONOS, Strato, Hostinger, Zoho, Fastmail, and most cPanel / webmail hosts — connect with your NORMAL mailbox password (the exact same password you use to sign in to your webmail). If a customer went looking for an "App Password" setting on one of these providers and couldn't find one, that's expected; there usually isn't one and they don't need it. Rule of thumb: if you can sign in to your provider's webmail with a password and you're NOT on Gmail or Outlook, that password is the one WarmySender needs. How to connect (Mailboxes → Add Mailbox): (1) choose IMAP/SMTP (a.k.a. "Custom IMAP/SMTP" / "Other provider" — the option for anything that isn't Gmail or Outlook), (2) enter your full email address (you@yourcompany.com), (3) enter your normal mailbox password (no App Password, no 2FA required), (4) enter your provider's IMAP + SMTP host and ports from their settings page — a typical setup is IMAP host on port 993 with SSL/TLS for incoming and SMTP host on port 587 with STARTTLS for outgoing, but the exact host names and ports come from the provider so copy them from there, (5) click Test Connection, then Save (green "Connected" status). Reconnecting works the same way (open the mailbox → Update credentials / Reconnect → re-enter the normal password + same host/ports). "Do I need 2FA or App Passwords?" → NO: 2-Factor Authentication and App Passwords are only for Gmail and Outlook; for hosting/IMAP providers the normal mailbox password is correct and nothing is mandatory. If reconnect says "authentication failed" (almost always quick to fix for these providers, and not a sign anything is broken), work through: (a) re-enter your NORMAL mailbox password (not an App Password) — test it by signing in to your provider's webmail in a browser to confirm it's the right one, and re-type carefully (stray pasted space / typo is common); (b) confirm the username is your FULL email address, not just the part before the "@"; (c) double-check the IMAP/SMTP host and ports against the provider's settings page (one wrong character or wrong port reads as a failed connection even with a perfect password; common values IMAP 993 SSL/TLS, SMTP 587 STARTTLS); (d) if you recently changed your mailbox password, use the new one and give the provider a few minutes to apply it; if it still fails, reply to support and we'll look at that specific mailbox. Clarifies connecting this way has NO effect on warmup/campaigns — a mailbox connected with a normal password works exactly like any other; once connected, warmup begins on its normal gentle ramp and the mailbox is ready for cold email campaigns and Multichannel sequences, with other mailboxes and LinkedIn outreach unaffected; and distinguishes a setup-time "authentication failed" from an already-connected mailbox briefly showing a connection problem (a temporary provider-side hiccup covered at /documentation/why-are-my-mailboxes-reconnecting). 7-question FAQPage-structured FAQ covers "which password do I use for my hosting mailbox?" (your normal webmail password), "my provider doesn't have an App Password setting — what do I do?" (normal — use your normal password), "do I need to enable 2FA first?" (no — Gmail/Outlook only), "which providers use a normal password instead of an App Password?" (most of them — All-Inkl, IONOS, Strato, Hostinger, Zoho, Fastmail, cPanel/webmail hosts; Gmail and Outlook are the exceptions), "where do I find my IMAP and SMTP host and ports?" (your provider's settings page; typical IMAP 993 SSL/TLS + SMTP 587 STARTTLS), "it says authentication failed — how do I fix it?" (re-enter normal password, full-email username, recheck host/ports), and "does connecting this way affect my warmup or campaigns?" (no). Internal links to /documentation/connect-gmail-workspace-alias, /documentation/gmail-app-password-says-auth-failed, /documentation/connect-microsoft-365-mailbox, /documentation/why-are-my-mailboxes-reconnecting, and /mailboxes. Built 2026-06-24 as the canonical landing page for "connect hosting/IMAP mailbox without an app password" queries; complements (does not duplicate) the Gmail and Microsoft connection guides, which cover the providers that DO need an App Password. Account safety: pure documentation; zero outbound API calls described or implied. - Connect WarmySender to Claude (add the assistant connector in Claude web + desktop, the two sign-in options, paid-plan requirement, and the #1 fix for a greyed-out connector): https://warmysender.com/documentation/connect-warmysender-to-claude — Customer-facing self-serve doc and the canonical landing page for "connect WarmySender to Claude" / "add WarmySender connector in Claude" / "WarmySender connector greyed out or inactive" / "run my cold email and LinkedIn campaigns from Claude" search and AI-assistant queries. What it is: a safe link between Claude and the customer's own WarmySender workspace that lets them run outreach by chatting — start cold email campaigns, add prospects, check how mailboxes are warming up, and review LinkedIn replies, all inside their own account and all within WarmySender's normal safe sending limits. How to add it (same idea in Claude on the web and in the Claude desktop app): (1) sign in to warmysender.com in the same browser FIRST — this is what lets the connector turn on cleanly, (2) in Claude open the connectors (a.k.a. integrations) settings and choose to add a connector, (3) when asked for the connector's address enter https://warmysender.com/mcp, (4) on the WarmySender approval screen, approve the connection — because you're already signed in it finishes in a couple of clicks, (5) the connector shows connected and you can start asking Claude to run your campaigns. Two ways to sign in: (A, simplest) sign in with your warmysender.com account on the approval screen; (B) create a workspace key in WarmySender and give it to Claude instead — useful for a shared or headless setup; a workspace key works with any assistant, not just Claude (the /ai-agents page shows exactly where to create it). Paid plan required: the connector is included with paid plans at no extra charge (free-plan users are prompted to upgrade first; current plans on the billing page). THE #1 FIX — "connector stays greyed out / inactive" (CORRECTED 2026-07-28): if you tried this before 28 July 2026, the approval could not finish for anyone using the sign-in path — not anything the customer did, and not fixable by signing in first, clearing cookies or switching browsers. It is fixed; remove the half-added connector from Claude and add it again and it completes. Full detail and the rest of the troubleshooting: https://warmysender.com/documentation/connecting-an-ai-agent-that-asks-you-to-sign-in. Also double-check the address is exactly https://warmysender.com/mcp and that you're on a paid plan, and if you'd rather skip the sign-in screen, connect with a workspace key. Safety reassurance: everything the connector does runs through WarmySender's normal safety rules, so emails still send at a measured, reputation-safe pace, warmup keeps to its gentle ramp, and LinkedIn actions stay within their daily/weekly limits and ramp schedule — the connector can't bypass any of that; it only works inside the workspace you approve and can be disconnected anytime from Claude's connector settings. 7-question FAQPage-structured FAQ covers "what is the connector?", "how do I add it?", "why is it greyed out/inactive?" (a known issue before 28 July 2026, now fixed — just add the connector again), "do I need a paid plan?" (yes, included), "sign in or use a key?" (either), "is it safe to let Claude send on my behalf?" (yes — safety limits always apply), and "does it only work with Claude?" (no — other assistants too). Internal links to /ai-agents (one-paste setup for Claude and other assistants + where to create a workspace key), /docs/integrations (deeper technical reference), /billing, and /documentation. Built 2026-06-26 as the calm walkthrough that complements the /ai-agents install hub. Account safety: pure documentation; zero outbound API calls described or implied. No-backend-jargon: only WarmySender and Claude are named; no callback URLs, sign-in protocol names, or status codes. - Connecting an AI agent that asks you to sign in (the custom-connector path end to end, and what to do if the connection doesn't complete): https://warmysender.com/documentation/connecting-an-ai-agent-that-asks-you-to-sign-in — Customer-facing self-serve doc and the canonical landing page for "AI connector sends me back to my dashboard", "custom connector keeps reloading", "the connector won't finish signing in", "connector added but nothing works", and "how do I connect an AI agent that asks me to sign in". THE HEADLINE ANSWER, stated first because it is the most common reason someone is reading this page: if approving the connector kept returning you to your WarmySender dashboard instead of finishing — possibly several times over, in what felt like a loop — that was not anything the customer did. It affected everyone using the sign-in path whether or not they were already signed in, so no amount of retrying, signing in first, clearing cookies or switching browsers could have worked. It was fixed on 28 July 2026. To recover: remove the half-added WarmySender connector from your AI tool and add it again; it completes the first time now, with nothing to clear, reset or re-create. Two ways to connect, both giving identical access: (A) sign in to connect — point your AI tool at https://warmysender.com/mcp, a WarmySender approval screen opens, sign in with your normal WarmySender account and approve; nothing to copy or store, and this is the path that appears as "add a custom connector"; (B) use a workspace key created inside WarmySender and pasted into your AI tool — works with every supported tool and is the better choice on a shared or headless machine (the /ai-agents page shows where to create one). You can switch between them at any time without affecting anything already running. Step by step for path A: (1) open your AI tool's connector / integration settings and choose to add a custom one, (2) enter the address exactly as https://warmysender.com/mcp, (3) sign in on the WarmySender screen that opens (if you're already signed in in that browser this passes straight through), (4) review what the agent is asking for and approve, (5) your AI tool shows WarmySender as active — try it by asking which campaigns are running. The sign-in step stays valid for about 30 minutes; if you leave it much longer, start again from your AI tool — nothing gets stuck and there is nothing to undo. If it still doesn't finish, in order of likelihood: check the address is exactly https://warmysender.com/mcp with no trailing slash and nothing appended; check your plan (connecting an agent needs a paid plan and is included at no extra charge — on the free plan, or on an account that signed up without picking a plan, the connector can attach but every request it makes is turned down, and choosing a plan switches it on immediately with no need to reconnect); start the approval fresh rather than reloading a stale screen; or use the workspace-key route instead. Distinct-failure guidance: "connected but everything is refused" is almost always the plan, not the connection; "connected but it says it can't do a particular thing" is usually one of the deliberate app-only actions (connecting or disconnecting mailboxes and social accounts, and permanent deletion, are never available to an agent — a security decision); "connected and working but slower than expected" is WarmySender pacing the work on purpose. Safety: an agent never sends anything directly and can never raise a limit — WarmySender paces every email and every LinkedIn action inside its normal safe daily and weekly caps and gradual ramp, so asking an agent to enroll a very large list still results in safe, spread-out sending; the agent only works inside the workspace you approved and can be disconnected at any time. 7-question FAQPage-structured FAQ covers "why did it keep sending me back to my dashboard?" (fixed — just add it again), "what address do I give my AI tool?", "sign in or use a key?", "do I need a paid plan?" (yes, included with paid plans), "how long do I have to finish approving?" (about 30 minutes), "is it safe to let an AI agent run my outreach?" (yes — safety limits always apply), and "what can a connected agent actually do?". Internal links to /ai-agents, /documentation/connect-warmysender-to-claude, /documentation/connect-your-ai-agent, /billing and /documentation. Built 2026-07-28 alongside the fix, deliberately written so it never implies the reader caused the problem. Account safety: pure documentation; zero outbound API calls described or implied. No-backend-jargon: only WarmySender and the public AI product names are used; no sign-in protocol names, no status codes, no internal mechanism names. - Connect your AI agent to run your whole outreach (any MCP-compatible agent — Claude, ChatGPT, Cursor, Codex, OpenClaw, Hermes Agent — driving WarmySender in plain language): https://warmysender.com/documentation/connect-your-ai-agent — Customer-facing self-serve guide and the canonical landing page for "connect an AI agent to run my outreach" / "control WarmySender from Claude, ChatGPT, Cursor, Codex, OpenClaw, or Hermes Agent" / "run cold email, LinkedIn, and Instagram campaigns by chatting" search and AI-assistant queries. What it is: connect any AI agent that speaks the Model Context Protocol (MCP) to WarmySender and run your entire outreach just by describing what you want in everyday English — your agent sets it up in your own workspace and WarmySender runs it on autopilot inside safe sending limits. What your agent can do: build, launch, and manage campaigns on every channel — cold email, LinkedIn, WhatsApp, and Instagram (create, launch, pause, resume, enroll) — add and enroll prospects, verify email addresses (one address or a whole list), tune warmup, and check inbox health and stats, all in plain language. How to connect (four ways, sign-in first — updated 2026-09-09): (1) SIGN IN, no API key needed — add WarmySender to your agent at https://warmysender.com/mcp, a WarmySender sign-in screen opens, approve, done (per-agent steps for Claude, ChatGPT via Codex, Claude Code, Cursor, Codex, OpenClaw and Hermes Agent, identical to the app's onboarding "Connect your agent" step); (2) ONE CLICK — the Add to Cursor button and the Add to Claude link; (3) INSTALL THE WARMYSENDER SKILL — npx skills add fortuneflick/warmysender-claude-plugin, or the Claude Code / Cursor / Grok plugin marketplaces (public repo github.com/fortuneflick/warmysender-claude-plugin); (4) PASTE ONE PARAGRAPH into a chat-only agent and it connects itself. The API-key path (Settings → API Keys, ws_ key, same address) remains the universal fallback for agents without a sign-in screen and for headless setups; the page carries a snippet for EVERY supported client, including the key-only ones (Grok, Windsurf, Zed). WHICH AI MODEL CAN I USE — the most-asked pre-sales question and a common misconception: the model lives in YOUR agent, NOT in WarmySender, and WarmySender never sees which model is on the other end of the connection. OpenRouter, DeepSeek, a local model and any other OpenAI-compatible provider therefore ALL work today — choose the model inside your agent, then point that agent at WarmySender. There is NO model setting inside WarmySender and no provider for us to "add"; answering "WarmySender doesn't support OpenRouter" is wrong. Worked example: Zed has its own OpenRouter provider under Settings → AI → LLM Providers, and WarmySender is added alongside it under context_servers. Included with any active WarmySender plan — no separate add-on to buy (current plans on the pricing page). Safety reassurance: your agent never sends messages directly and can never raise a limit — WarmySender's scheduler paces every email and every LinkedIn, WhatsApp or Instagram action within safe daily, weekly, and hourly caps and a gradual ramp, the same protections the app uses, so even a large enrolled list goes out gently over time; account safety always wins, and you can revoke access any time. The only thing that stays in the app is connecting and disconnecting your accounts — your mailbox and social logins never pass through an agent, a deliberate security choice. Built 2026-07-06 as the plain-language companion to the /ai-agents install hub. Account safety: pure documentation; zero outbound API calls described or implied. - Connect WarmySender to Muse Code (Meta's terminal coding agent — key-only, one settings block): https://warmysender.com/documentation/connect-warmysender-to-muse-code — Muse Code connects to WarmySender with a WORKSPACE KEY, not a sign-in screen: it has no browser sign-in flow for MCP servers, so the key path is the only one we publish for it. Three steps: create a ws_ key in Settings > API Keys, add one block to Muse Code's settings file at ~/.config/muse/settings.json (or the muse/settings.json inside a custom configuration folder), start Muse Code again. THE TWO THINGS THAT BREAK IT, both stated plainly: the settings file MUST carry a schema_version line saying 1 — without it Muse Code refuses the ENTIRE file, including every other server you had configured — and a WarmySender entry is reached over the network, so it carries an address and headers and must NOT also carry a command. Adding the entry inside an existing server list keeps everything else working. Also covers what to check when no tools appear (settings file, then the key, then the plan — connecting an agent needs an active paid plan and is included at no extra charge — then whether the key is read-only), and why a key is fine: same workspace, same safe sending limits, revocable any time in Settings > API Keys. Safety: the agent NEVER sends a message, DM or invite itself and can NEVER raise a limit; launching only writes the campaign and hands it to WarmySender's scheduler, which paces every email and every LinkedIn, Instagram and WhatsApp action inside safe daily caps and the gradual ramp; connecting and disconnecting accounts stays in the app. 7-question FAQPage-structured FAQ. Internal links to /documentation/connect-your-ai-agent, /documentation/connecting-an-ai-agent-that-asks-you-to-sign-in, /documentation/which-ai-agents-can-run-outreach, /documentation/what-your-ai-agent-can-and-cannot-do-with-cold-email, /ai-agents, /mcp. Built 2026-09-09; the settings path, the required schema version, the mcp_servers/streamable_http/url/headers shape and the fact that the entry really reaches the WarmySender server were all verified locally against the Muse Code 1.0.3 binary that day. - Run cold email outreach with Meta Muse Code (the WORKFLOW page — what to type once Muse Code is connected): https://warmysender.com/documentation/run-cold-email-outreach-with-meta-muse-code — the companion to the setup guide. Cold email start to finish in four sentences (check the verification allowance, verify the list, make a prospect list from the clean addresses, build the campaign, start it, ask how it did), plus the equivalent prompts for LinkedIn, Instagram, WhatsApp and a single multichannel campaign, plus warmup ("turn warmup on for my two new mailboxes", "how is reputation building?"). Capability list is DERIVED from the WarmySender tool catalogue, never hand-typed, so it cannot claim a tool the server does not expose. STATES PLAINLY, TWICE: WarmySender is NOT a built-in Muse connector (Meta runs no catalogue to install us from — the connection is one block in the customer's own settings file), and while we verified that Muse Code really reaches the WarmySender server on startup, we have NOT run a WarmySender tool call from inside Muse Code and do not claim one. Also states that Muse Code connects with a workspace key, not a sign-in screen (it has no browser sign-in flow for MCP servers). Explains why "start it" is allowed but "send it" does not exist, and why running four channels adds touchpoints and never headroom (channel budgets do not pool). Safety: the agent NEVER sends a message, DM or invite itself and can NEVER raise a limit; launching only writes the campaign and hands it to WarmySender's scheduler, which paces every email and every LinkedIn, Instagram and WhatsApp action inside safe daily caps and the gradual ramp; email verification shares the same allowance and pacing; connecting and disconnecting accounts stays in the app. 6-question FAQPage-structured FAQ. Internal links to /documentation/connect-warmysender-to-muse-code, /documentation/can-meta-muse-run-my-outreach, /documentation/what-your-ai-agent-can-and-cannot-do-with-cold-email, /documentation/which-ai-agents-can-run-outreach, /ai-agents, /mcp. Built 2026-09-09. - Can Meta Muse run my outreach? (the CONSUMER agent, as opposed to Muse Code the terminal agent): https://warmysender.com/documentation/can-meta-muse-run-my-outreach — THE ANSWER IS NO, not through any supported integration, and WarmySender is NOT a built-in Muse connector. Meta has not documented a connector platform, a plugin store, a developer directory or MCP support for Muse, so there is no route for a vendor to register tools with it and nothing for a customer to install. What Meta DOES document about Muse (first-party, Meta newsroom, September 2026): a personal AI agent that "doesn't just answer questions, it actually does the work"; rolling out IN THE US on iOS, Android and muse.ai with AI glasses coming later; running on a dedicated secure computer with its own browser; able to open a browser, fill out forms and negotiate on the person's behalf; people choose which apps it connects to and how much access each gets. The page also corrects a common misreading: Meta's Ads MCP server is Meta publishing a SERVER that people add INTO other agents (it "works with any MCP-compatible AI agent"), which is the inverse of Meta hosting third-party tools inside Muse — Meta and MCP in one sentence does not mean Muse can reach WarmySender. One unsupported path is described honestly and labelled as press reporting rather than Meta documentation: Muse working with a service that has a public API using credentials the person supplies — WarmySender has a public API, but we have not tested this, make no claim it works, cannot support it, and advise a read-only key deleted afterwards if anyone experiments. Muse vs Muse Code is spelled out: separate products sharing a name, and Muse Code connects precisely because it reads a settings file the customer controls, so no catalogue has to let anyone in. Safety: no agent sends a message, DM or invite itself and none can raise a limit; launching hands the campaign to WarmySender's scheduler, which paces every action inside safe daily caps and the gradual ramp; connecting and disconnecting accounts stays in the app; the guardrails are enforced by the sender, not by the agent, so no prompt can talk round them. 6-question FAQPage-structured FAQ. Internal links to /documentation/connect-warmysender-to-muse-code, /documentation/run-cold-email-outreach-with-meta-muse-code, /documentation/which-ai-agents-can-run-outreach, /documentation/what-your-ai-agent-can-and-cannot-do-with-cold-email, /ai-agents, /mcp. Built 2026-09-09; every Meta claim traces to a fetched first-party Meta source, with the single secondary claim labelled as such on the page itself. - Which AI agents can run outreach? (the honest per-client, per-plan matrix with every vendor's own documentation linked): https://warmysender.com/documentation/which-ai-agents-can-run-outreach — Any agent that speaks MCP can connect to WarmySender — Claude, ChatGPT, Cursor, Codex, OpenClaw and Hermes Agent among them, plus Claude Desktop, Claude Code, Grok Bot, Windsurf and Zed — but what each app is ALLOWED to do differs by app and by plan, and that is where most setups stall. Per-client connect route (Claude: Customize > Connectors > Add custom connector, available on Free/Pro/Max/Team/Enterprise with Free limited to one and an owner adding it org-wide first on Team/Enterprise; ChatGPT web: developer mode under Settings > Security and login, with FULL connector support — the write actions campaigns need — reserved for Business/Enterprise/Edu and a personal Pro account limited to reading; ChatGPT desktop: Settings > MCP servers; Codex: codex mcp add / codex mcp login, included with every paid ChatGPT plan from Plus up; Cursor: .cursor/mcp.json; OpenClaw: openclaw mcp add / set / login; Hermes Agent: hermes mcp add; Grok Bot: a custom connector installed account-wide; Windsurf: the Cascade MCP panel; Zed: Settings > AI > MCP Servers). Sign-in vs API key, and MCP vs the public API, each answered. Built 2026-09-06; every row checked against the vendor's own docs that day. - Connect WarmySender to ChatGPT and Codex (the plan gate stated honestly, then two lines that work): https://warmysender.com/documentation/connect-warmysender-to-chatgpt-and-codex — On ChatGPT, adding your own connector lives behind developer mode, and the write actions a campaign needs are a ChatGPT Business/Enterprise/Edu capability; a personal Pro account can connect for reading only. So for one person on ChatGPT Plus, CODEX is the path that actually works — and it is already included with the plan. Full Codex setup (create a ws_ key in Settings > API Keys, then codex mcp add warmysender --url https://warmysender.com/mcp with a bearer-token variable, or codex mcp login warmysender to sign in instead; the IDE extension takes the same server and needs a restart), the workspace route for Business/Enterprise/Edu, the ChatGPT desktop app's MCP servers screen, an API-key-vs-sign-in table, and the three causes of "no tools appeared". Built 2026-09-06. - Connect WarmySender to n8n (yes, three ways, no plugin: an n8n AI Agent through the MCP Client Tool node at https://warmysender.com/mcp, the REST API from an HTTP Request node, and replies/bounces/accepted invites into a Webhook node — plus the Make and Zapier equivalents): https://warmysender.com/documentation/integration-n8n — WarmySender connects to n8n in three ways and none of them needs a plugin or a community node; n8n never sends a message itself and can never raise a limit. Works on self-hosted n8n and n8n Cloud, on every paid plan including the AppSumo lifetime tiers. - What your AI agent can and cannot do with cold email (the capability matrix, with the safety framing in the same answer): https://warmysender.com/documentation/what-your-ai-agent-can-and-cannot-do-with-cold-email — CAN: build, launch, pause, resume and report on campaigns; create and enroll prospects one at a time or in bulk; read your saved templates; verify addresses; configure warmup across many mailboxes; add tracking domains; read and add to your suppression list; set your company address and switch the opt-out between a footer link and a reply-to-opt-out line; search, save and export leads; explain why something sent nothing yesterday. CANNOT, structurally: send any message itself, raise any limit, connect or disconnect an account, outrun the ramp, or switch the opt-out off. Starting a campaign only hands it to the scheduler, which paces every send inside the sending window, the per-mailbox daily limit, the domain ceiling and the plan allowance — lowest wins. Read-only keys are available. Built 2026-09-06. - Verify emails with an AI agent (verify, then launch, in one conversation): https://warmysender.com/documentation/verify-emails-with-an-ai-agent — Ask any connected agent to check a single address or submit a whole batch, list batches, read results, cancel a running batch, read the remaining allowance, and turn the confirmed addresses into a prospect list — then build and start the campaign from that list. Charging is identical to the app: one credit per CONFIRMED result, nothing for an address that cannot be confirmed either way; credits never expire and top up the plan's monthly allowance; an agent shares the same allowance and cannot verify any faster. WarmySender has no email-finder for customers — verification confirms addresses you already have; to GET addresses, use the built-in business database or import a list that has them. Leads from the database are NOT pre-verified: save, then verify, then launch. Built 2026-09-06. - Run LinkedIn outreach with an AI agent (deep tool set, unchanged safety): https://warmysender.com/documentation/run-linkedin-outreach-with-an-ai-agent — An agent can create, launch, pause, resume and enroll into LinkedIn campaigns, publish and delete posts and read their engagement, create/publish/close recruiter job postings and read applicants (Recruiter seat), and report account health, campaign stats and why an account is quiet today. It can NEVER send an invite or message, raise a daily or hourly limit, shorten the ramp, skip a cooldown, or connect/disconnect an account (a LinkedIn seat plus an in-app connection is required). Newly connected accounts start slow on purpose. Prospects whose profile link is missing or unusable — common in Sales Navigator list exports, which carry a reference to the saved list rather than a real profile address — are SKIPPED and reported rather than guessed at; the fix is re-importing with the normal profile links. One automation tool per account. Built 2026-09-06. - Run multichannel outreach with an AI agent (and the misconception it refuses): https://warmysender.com/documentation/run-multichannel-outreach-with-an-ai-agent — Describe who, which channels, what each step says and the timing, and an agent builds the campaign across cold email, LinkedIn, Instagram and WhatsApp, then hands it to the scheduler. ADDING A CHANNEL DOES NOT RAISE YOUR TOTAL: each channel keeps its own budget and they do not pool — cold email is held by the per-mailbox limit, the mailbox's combined warmup-and-cold budget, the domain ceiling and the plan allowance; LinkedIn by its daily and hourly ceilings plus the ramp; Instagram by ONE SHARED action budget across follows, profile views, likes, comments and DMs; WhatsApp by its own pace. What multichannel buys is relevance and timing, not volume. LinkedIn and Instagram each need their seat and a connected account; connecting is never an agent action. An agent can also explain, in plain language, why a campaign sent nothing today. Built 2026-09-06. - Use the lead database with an AI agent (search, save, verify, launch): https://warmysender.com/documentation/use-the-lead-database-with-an-ai-agent — An agent can search the built-in 200M+ USA & Canadian business database by role or job title, company, industry, company size and location (country, city, postcode, and street-level for the US and Canada), save what it finds to a list, and export it. Searching, filtering and paging are FREE and never spend anything; every record stays masked until saved; one credit per NEW lead saved or exported, re-saving is free, and a record with no email is not charged. The monthly allowance is released evenly across the month BY DESIGN so one afternoon cannot drain it — lead credits never expire and deliberately skip that pace. Saved leads are NOT pre-verified: verify before sending. Pro plans and up. The agent never sends and can never raise a limit. Built 2026-09-06. - Run your email marketing & outreach on autopilot with AI (MCP) — connect any MCP AI client (Claude, ChatGPT, Cursor, Windsurf, Zed, Codex, Perplexity) and automate cold email + LinkedIn + Instagram by chatting: https://warmysender.com/documentation/automate-outreach-with-ai — Customer-facing self-serve guide and the canonical landing page for "automate my outreach with AI" / "put my cold email marketing on autopilot" / "MCP for cold email, LinkedIn, and Instagram" / "run WarmySender from Claude, ChatGPT, Cursor, Windsurf, Zed, Codex, or Perplexity" search and AI-assistant queries; the outcome-focused companion to /documentation/connect-your-ai-agent. What it is: put your entire outreach on autopilot by connecting any AI client that speaks the Model Context Protocol (MCP) to WarmySender and describing what you want in plain English — your AI builds and launches it in your own workspace and WarmySender runs it 24/7 inside safe sending limits. The ONE in-app step you do yourself first (for security — logins never pass through an AI): connect a mailbox and turn on warmup. What you can then automate by chatting: build, launch, and manage campaigns on every channel — cold email, LinkedIn, WhatsApp, and Instagram (create, launch, pause, resume, enroll) — add and enroll prospects, verify email addresses (one address or a whole list), tune warmup, and read back inbox health and campaign stats, all through a toolkit of 60 tools. How to connect: point your AI client at the address https://warmysender.com/mcp and either sign in once with your WarmySender account on the approval screen (no key to copy, for clients like Claude that support it) OR create an API key in Settings → API Keys that starts with ws_ and give it to your client (the universal path — works with every MCP client, including shared or headless setups); the /ai-agents page has one-paste setup for every supported client and /mcp explains how the connection works. One key works with all of them. Included with any active WarmySender plan — no separate add-on to buy. Safety model: your AI never sends directly and can never raise a limit — WarmySender's scheduler paces every email and every LinkedIn, WhatsApp or Instagram action within safe daily and weekly caps and a gradual ramp (the same protections the app uses), so even a large enrolled list goes out gently over time; connecting and disconnecting accounts stays in the app; the toolkit has no destructive delete powers; and everything is scoped to your own workspace. Account safety always wins, and you can revoke access any time. Built 2026-07-22. Account safety: pure documentation; zero outbound API calls described or implied. - Connect a Microsoft 365 mailbox (three methods + back-to-back account-picker fix + App Password fallback + org-wide admin-approval flow): https://warmysender.com/documentation/connect-microsoft-365-mailbox — Customer-facing comprehensive guide to connecting a Microsoft 365 work/school or personal Outlook.com mailbox to WarmySender. Three connection methods covered in detail: (1) Sign in with Microsoft (recommended) — one click, no admin setup, automatic session refresh, survives password changes, works on any Microsoft account; (2) App Password — paste an email and app password, requires Authenticated SMTP enabled by the M365 admin AND multi-factor auth on the account; (3) Custom IMAP/SMTP for non-standard Exchange setups. Two-part Walt scenario fix: when connecting many Microsoft mailboxes back-to-back the browser may silently re-sign you in as a previously-connected account (no error, just wrong mailbox in your list) — three avoidance paths documented: type the email into the 'Which email do you want to connect?' field so we pass it as a Microsoft login hint forcing the account picker, click 'Sign out of Microsoft first' link inside the connect dialog, or open each connect in a new incognito/private window. Plain-language App Password failure runbook: "Authentication unsuccessful" almost always means Microsoft has Authenticated SMTP turned off at the tenant or per-user level (not a wrong password); fastest fix is switching to Sign in with Microsoft (one-click 'Connect with Microsoft instead' button on the error), longer fix is asking the IT admin to enable Authenticated SMTP via Admin Center → Active Users → user → Mail → Manage email apps → tick Authenticated SMTP → Save. Per-user admin enablement steps included inline; full admin runbook cross-linked to /documentation/smtp-tenant-disabled. 2026-05-21 update — new "What if Microsoft shows Need admin approval?" section documents the dedicated org-wide admin-consent flow for customers whose Microsoft 365 organizations restrict third-party app sign-ins (the common business/enterprise default): (Option 1, recommended) the in-app flow — go to Mailboxes → Add Mailbox → expand "Having trouble? My organization requires admin approval" → click "Grant org-wide admin consent" → sign in as a Microsoft admin (Global Administrator, Application Administrator, or similar) → approve WarmySender for the whole organization → close window → any user in the organization can now connect their own mailbox without seeing the approval prompt; (Option 2, manual) the IT admin goes to the Microsoft Entra admin center → Enterprise Applications → searches "WarmySender" → Permissions → "Grant admin consent for [organization]". After approval is granted once, every user in the org can connect normally — it's one-and-done per organization, not per user. Section also handles the cross-user mismatch case ("You signed in as X, but the mailbox you clicked is Y") that happens when an admin grants approval but the original mailbox row in the user's list belongs to a different employee — approval was still recorded for the org, just go back to Mailboxes and click Reconnect on the original row as that specific user. Troubleshooting section also covers wrong-account-connected symptoms (no error, duplicate row, or missing-new-mailbox), and recurring "Reconnect needed" badge for App Password mailboxes after MFA resets. Plain-language permissions disclosure: read profile/name/avatar, send mail on your behalf, read mail and folders (for reply detection + warmup recognition + bounce tracking, never personal email), and offline access for automatic session refresh. Privacy/security stance: passwords never touch our servers under Sign in with Microsoft (encrypted session token only), app passwords stored encrypted at rest, instant disconnect/revoke, only reads messages relevant to outreach. 8-question FAQ covers which method to use, admin requirements, multi-mailbox connection, personal Outlook.com support, disconnect/revoke, cross-organization mailboxes, bulk import compatibility, and warmup eligibility. Built 2026-05-20 as part of the Walt-scenario Microsoft connection improvement; expanded 2026-05-21 with the org-wide admin-approval flow for organizations that restrict third-party app sign-ins. Account safety: pure documentation; zero outbound API calls described or implied. Companion to the Microsoft sign-in flow that forces the account picker on every connect attempt, the App Password error UI that surfaces the 'Connect with Microsoft instead' fallback, and the new "Grant org-wide admin consent" button inside the Microsoft connect dialog. - Connect a Microsoft 365 / Exchange Online ALIAS (several alias addresses on ONE licensed mailbox, each its own sender — the Microsoft twin of the Google Workspace alias guide): https://warmysender.com/documentation/connect-microsoft-365-alias — Customer-facing guide and the canonical landing page for "can WarmySender send from Microsoft 365 aliases", "one licensed mailbox many alias domains", and "Office 365 alias sending identity" queries. THE ANSWER IS YES and it is not Google-only: point several alias addresses at WarmySender while they all sign in through one licensed mailbox, and each alias becomes its own sender with its own From address, its own warmup ramp, its own daily limit and its own campaigns — no separate Microsoft licence per outreach domain. THE ONE STEP PEOPLE MISS: use Custom IMAP/SMTP, NOT the one-click Sign in with Microsoft. The Microsoft sign-in connects exactly one address — the mailbox that signed in — because the sign-in itself defines the sending address, so there is no place in that flow to add an alias; that is expected and is not a limitation of alias support. THE FIELD MAPPING: Email address = the ALIAS you want to send from (e.g. john@domain1.com); Username, for BOTH outgoing and incoming = the LICENSED MAILBOX that owns the password (e.g. sender@maindomain.com); Password = the licensed mailbox's password, since the alias has no password of its own; outgoing smtp.office365.com port 587; incoming outlook.office365.com port 993. The mental model: Username is who signs in, Email address is who the message comes from — separate fields on purpose, and for an alias they are supposed to differ. PORT 587, NEVER 465: Microsoft accepts application mail on 587 (or 25) and does not serve 465 for this kind of connection, so a Microsoft mailbox set to 465 hangs and then reports that the server did not respond rather than giving a clear error; 465 is perfectly normal on many other providers, so this is Microsoft-specific. TWO TENANT SWITCHES the administrator may need to turn on once, both off by default for organisations created after January 2020, and both in Microsoft 365 admin centre → Users → Active users → the licensed mailbox → Mail → Manage email apps: Authenticated SMTP (lets an application send at all) and IMAP (lets warmup confirm delivery and replies be detected). Only the licensed mailbox needs them — aliases have no sign-in of their own. PROVE ONE ALIAS FIRST: Microsoft, not WarmySender, decides whether it accepts an alias in the From line of application-submitted mail, so connect a single alias, test the connection, save it, send one real message and confirm it arrives showing the alias as the sender before adding the rest; if Microsoft refuses, the administrator grants that address permission to send from the licensed mailbox. THE CAVEAT THAT MATTERS MOST: Microsoft applies its sending limits to the LICENSED MAILBOX, not per alias, so every alias on one licensed mailbox draws on ONE shared allowance and WarmySender paces them together to keep the account safe — stacking more aliases onto one licensed mailbox does NOT increase how much you can send; add more licensed mailboxes for more volume. Secondary effect: because all aliases deliver into one physical inbox, warmup confirmation is slightly less precise than when each sender has its own inbox. Bulk import supports the alias shape directly — a separate username column alongside email. Troubleshooting covers sign-in rejected (alias typed into Username, or Authenticated SMTP still off), timeouts (wrong port), warmup never confirming (IMAP off), whether aliases can be added to an existing one-click Microsoft connection (not to that entry — add each alias separately), and whether each alias needs a Microsoft licence (no, but each counts towards the WarmySender plan's mailbox allowance). Companion to https://warmysender.com/documentation/connect-microsoft-365-mailbox (standard non-alias Microsoft connection) and https://warmysender.com/documentation/connect-gmail-workspace-alias (the same setup on Google). Built 2026-09-07. Account safety: pure documentation; zero outbound API calls described or implied. - Connect HubSpot to WarmySender (honest API + webhooks + Zapier/Make/n8n path — no native marketplace app yet — import HubSpot contacts + push send/open/reply events back as activities or property updates): https://warmysender.com/documentation/connect-hubspot-to-warmysender — Customer-facing comprehensive guide and the canonical landing page for "how do I connect HubSpot to WarmySender" / "WarmySender HubSpot integration" search and AI-assistant queries. Truthful positioning up front: WarmySender does NOT have a one-click native HubSpot app in the HubSpot marketplace yet — there is no 'Export to WarmySender' button inside HubSpot and no OAuth 'Connect HubSpot' toggle. The supported, fully documented path connects HubSpot to WarmySender using two building blocks included on every paid plan — an open REST API (read and write your data) and real-time, HMAC-signed webhooks (instant notification on reply, send, open, click, bounce, unsubscribe) — wired to HubSpot with a no-code automation bridge (Zapier, Make, or n8n), HubSpot's own workflow webhooks, or a small custom endpoint. What you can do today: import HubSpot contacts into WarmySender as prospects (ready for a cold email campaign, a LinkedIn sequence, or a multichannel sequence) and push WarmySender events back into HubSpot (log replies/opens/clicks on the matching contact as activities or update a contact property; flag bounced/unsubscribed contacts to keep the CRM clean). The 3 steps: (1) create a WarmySender API key in Settings > API (included on every paid plan), (2) add an outbound webhook in Settings > Webhooks (pick events, save the signing secret shown once, test end-to-end; every webhook is signed and delivery is retried automatically), (3) connect the two sides — Option A (recommended) a no-code bridge (start a flow from a webhook, paste the URL into WarmySender, add a HubSpot step; reverse direction starts from a HubSpot trigger and calls the WarmySender API to create+enroll the prospect), Option B HubSpot workflow webhooks, Option C a small custom endpoint. Why teams run HubSpot outreach through WarmySender (true differentiators only): lowest price in the category (paid plans from $14.99/mo, API access included — no extra integrations fee), built-in email warmup + Bounce Shield for deliverability so HubSpot-sourced campaigns land in the inbox, native LinkedIn multichannel (work the same HubSpot contacts over email AND LinkedIn in one sequence), and an open API with real-time webhooks (no lock-in). Safe/reliable: HMAC-signed notifications, automatic retries, workspace-scoped revocable API keys, nothing written to HubSpot except the steps you build, no impact on sending limits. The same API+webhooks+bridge approach also connects Salesforce and Zoho. 8-question FAQ covers: is there a native HubSpot app (no, not yet), do I need Zapier (no — Make/n8n/HubSpot workflows/custom endpoint all work), can I sync both ways (yes — one flow per direction), which plan (any paid plan, API + webhooks included), Make/n8n support (yes), will replies show in HubSpot (yes once the flow is built), is it secure (yes — signed webhooks + scoped keys), Salesforce/Zoho (same pattern). Internal links to /docs/integrations (API & webhooks reference) and /blog/integrations/hubspot-integration (step-by-step walkthrough). Built 2026-06-06. Account safety: pure documentation; zero outbound API calls described or implied. Honesty guardrail: never claims a native marketplace app, one-click OAuth connect, automatic contact sync, an Export button, automatic property mapping, native deal automation, or a sync-status dashboard. - How your free trial starts (what happens at signup, and what to do if the dashboard still looks locked): https://warmysender.com/documentation/trial-activation — Plain-language self-serve doc. THE TRIAL: 7 days on the Pro and Enterprise plans, no credit card required, nothing charged at the start and nothing charged when it ends (CORRECTED 2026-08-06 — this said "the Pro plan" after Enterprise became trial-eligible; the plan list is now derived from the same constant the trial grant itself reads, so it cannot say Pro-only again). The trial is offered on monthly AND annual billing (annual added 2026-08-27 — this said monthly-only before) — choosing the three-year term takes you straight to checkout with no trial step, because that deep-discount price is charged upfront (CORRECTED 2026-07-31 — this previously said the account "moves to the free tier". It does not: if no plan is chosen by the end of the 7 days the account moves into a RESTRICTED STATE, not a free plan. You can still sign in and every mailbox, campaign, prospect, template and statistic is preserved, but campaigns stop sending and email warmup pauses until a plan is chosen; choosing one switches both back on within a few minutes with warmup progress kept, so the ramp does not restart at day one). WHAT THE TRIAL COVERS: the cold email and email warmup features of whichever trial plan was chosen — connecting mailboxes, warming them, building and running campaigns. Two things work differently and the page says so rather than claiming "full access". The EMAIL VERIFIER is open to everyone regardless of plan (CORRECTED 2026-08-05 — this previously said the verifier "is not part of the trial", which has never been true since the verifier became a standalone public tool): a trialing account gets the free daily check like anyone else, and verification credits are purchasable at any time with no subscription; only the PLAN'S MONTHLY VERIFICATION ALLOWANCE starts when a paid plan starts. LinkedIn and Instagram are separate add-on seats rather than something the trial turns on. ACTIVATION: your account and workspace are created, your trial is registered against your billing profile, and your plan switches on — normally a second or two end to end, and at worst about 30 seconds. Until it switches on, paid features are deliberately held back so nothing can start sending on a half-activated account. IF THE DASHBOARD STILL LOOKS LOCKED, three steps in order: (1) refresh the page — the dashboard reads your plan fresh on every load, and this resolves the overwhelming majority of cases; (2) open /billing, the one screen that says plainly whether anything is genuinely outstanding — an unpaid invoice is named there with what it is for, its date and its amount, plus a button to settle it and a note saying whether the hold-up is your bank needing to approve the charge or a card that needs replacing (those two are NOT interchangeable — a new card cannot clear a charge waiting on bank approval); (3) email hello@warmysender.com from your signup address. Do NOT sign up a second time — a duplicate account splits your history and slows the fix. Activation runs on our side, so it continues whether your tab is open or closed. 7-question FAQPage-structured FAQ covers whether the trial charges anything (no, no card), trial length and what happens at the end (nothing charged, nothing to cancel, and a restricted state rather than a free plan if no plan is chosen), what is and is not included (the verifier's free daily check and credits ARE available during a trial — only its plan allowance and the LinkedIn/Instagram seats are not), the actual fix when the dashboard looks locked, data safety during a slow activation (nothing sent, nothing touched, nothing charged, nothing deleted), why not to sign up again, and tab-open behaviour. Companion to /documentation/post-purchase-troubleshooting (the same three steps for a paid upgrade) and /documentation/what-happens-to-my-account-when-a-payment-fails. Account safety: pure documentation; zero outbound API surface. Rewritten 2026-07-31 — CORRECTION: this entry and the page previously described a "Recover Now" banner, a "Re-check subscription" button and a self-heal recovery endpoint. None of those exist in the product; the steps above are what is actually shipped. - I paid but my plan hasn't changed yet (payment went through, dashboard still shows the old plan): https://warmysender.com/documentation/post-purchase-troubleshooting — Plain-language self-serve doc for the uncommon case where checkout completes but the dashboard still shows the previous plan. THE REASSURANCE FIRST: the payment is safe — the record of what you paid lives with the payment itself, not with what the dashboard is showing, so nothing here can lose money and refreshing, opening billing or emailing support cannot charge you again. A plan that has not switched over yet also does no harm: it sends no email, touches no LinkedIn or Instagram account, and pauses nothing — the account keeps exactly the access it already had until the new plan lands on top of it. THIS IS NOT A BILLING PAUSE, and the page draws the line explicitly because the two look alike on the dashboard: a late upgrade takes NOTHING away (whatever was already running, warmup included, carries on; anything the previous plan did not include stays held back for those few seconds), whereas an UNPAID INVOICE actively stops cold email campaigns, LinkedIn and Instagram steps, and email warmup together until it is settled — see /documentation/what-happens-to-my-account-when-a-payment-fails. (CORRECTED 2026-07-31 — this entry and the page previously claimed flatly that "nothing is paused, your warmup keeps running", which is only true of the late-upgrade case and reads as a promise in the billing-pause case.) WHAT HAPPENS AFTER PAYING: the payment is taken and recorded, then the new plan switches on, normally within a second or two; a lag is nearly always the confirmation arriving a moment after the browser drew the page. THE THREE STEPS: (1) wait about 30 seconds and refresh; (2) open /billing — your current plan and invoices are listed there, and anything genuinely unpaid is named at the top with what it is for, its date and its amount, a button to settle it, and a note saying whether your bank needs to approve the charge or the card needs replacing (a different card does not help with a bank approval); (3) email hello@warmysender.com with the address on your account and roughly when you paid. Do NOT pay again or open a second account. 5-question FAQPage-structured FAQ covers double-charge risk (nothing on the recovery path takes a payment; a duplicate checkout is refunded), data safety while the plan has not switched (nothing deleted, disconnected or cancelled; the account keeps the access it already had, which is not the same as a billing pause), how long to wait, what it means when billing shows nothing outstanding (then it is ours to fix), and refunds. Companion to /documentation/trial-activation and /documentation/what-happens-to-my-account-when-a-payment-fails. Account safety: pure documentation; zero outbound API surface. Rewritten 2026-07-31 — CORRECTION: this entry and the page previously told customers to click a "Recover Now" banner or a "Re-check subscription" button calling a self-heal endpoint. No such banner, button or endpoint exists; the steps above are what is actually shipped. - What happens to my account when a payment fails (billing pauses, billing in advance, add-on seats are not prorated, and what you are never billed for): https://warmysender.com/documentation/what-happens-to-my-account-when-a-payment-fails — Plain-language self-serve doc and the canonical written source for WarmySender's billing terms around unpaid invoices and add-on cancellation. WHAT PAUSES while an invoice is unpaid, stated honestly: cold email campaigns pause, LinkedIn and Instagram steps pause with them, and EMAIL WARMUP PAUSES TOO — mailboxes stop sending and receiving warmup mail until the invoice clears, then start again by themselves (a few days makes very little practical difference; a long gap is worth avoiding because warmup is what keeps sender reputation steady). NOTHING IS DELETED OR DISCONNECTED: mailboxes, LinkedIn and Instagram accounts, prospects, sequences, templates, statistics and history all stay exactly as they are, and replies still arrive in the inbox during a pause. One exception: if the workspace pays for LinkedIn seats and those are up to date, campaigns in that workspace keep running while the plan invoice is sorted out (warmup still follows the main plan and pauses either way). HOW YOU FIND OUT: a banner on the dashboard and on /billing names the exact invoice — what it is for, its date and its amount — and says which of three things is holding it up: your bank needs to approve the charge (a different card will not help), the card was declined (a different card is exactly the fix), or the payment is still processing (nothing to do but wait). Paused campaigns also carry a visible chip reading "Paused — an invoice is outstanding". RESUMING is automatic, normally within a minute of the payment clearing, with no button to press; campaigns resume exactly where they stopped, nobody is re-enrolled, no step repeats, no statistics reset, and no burst is fired to catch up on the paused days. BILLED IN ADVANCE: plans are charged for the month ahead, not the month just finished — which is why a failed renewal pauses you immediately (the failed invoice is the one paying for the period you are trying to use) and why cancelling never cuts you off early (you keep the period you already paid for). ADD-ON SEATS ARE NOT PRORATED — the term customers most often do not expect: cancelling a LinkedIn or Instagram seat part-way through a month leaves THAT MONTH PAYABLE IN FULL with no partial refund; in exchange the seat keeps working normally to the end of the period paid for and can be reactivated at any point before then. Worked example: a seat billed on the 6th and cancelled on the 18th is not refunded for the remaining days, keeps working until the 5th of the following month, and is not charged again after that. Instagram seats work the same way on their own billing date, and cancelling a seat never touches the email plan. WHAT YOU ARE NEVER BILLED FOR: if a subscription ends because a payment never went through, the customer is NOT billed for the time they were locked out — no charge for access they did not have, and no bill sent later for a period spent paused; coming back later starts a fresh subscription paid from that day. 9-question FAQPage-structured FAQ covers warmup pausing, whether anything must be pressed after paying, data safety, refunds on a mid-month seat cancellation, whether cancelling a seat cancels the email plan (no), why billing happens in advance, whether a pause moves the billing date (no), whether a customer is billed for a stretch they were locked out of (no), and the two-invoice case where a plan is settled but a seat is not. Every question in the structured data is also a visible heading on the page and the answers are word-for-word identical — nothing is asserted in markup that a reader cannot see. Internal links to /documentation/why-is-my-campaign-paused-after-a-payment-issue, /documentation/linkedin-seats-after-a-failed-payment, /documentation/cancelling-your-linkedin-add-on, /documentation/post-purchase-troubleshooting, /refund-policy, /pricing and /billing. STRICT no-backend-jargon. Account safety: pure documentation; zero outbound API surface. Built 2026-07-31. - Do I need to verify my list before I send? (should you verify at all, why a stale list bounces, what a bounce costs, and what to do with Risky / Unknown): https://warmysender.com/documentation/do-i-need-to-verify-my-list-before-i-send — Plain-language self-serve doc answering the pre-send question, the companion to the results explainer above. SHORT ANSWER = yes, unless you collected the list yourself in the last few weeks. WHY LISTS GO STALE = people change jobs and their work address is switched off; companies merge, rebrand or close and the whole domain stops accepting mail; typos and guessed address patterns were never real; long-abandoned addresses can be repurposed as traps. WHAT A BOUNCE COSTS = mail providers judge the mailbox you send from, not each message, so bounces push your GOOD email to spam and can get your sending paused; recovering takes weeks. WHAT VERIFICATION CHECKS = spelling, whether the domain can receive mail at all, whether that specific mailbox exists, and whether your own campaigns have already delivered there ('Real delivery' proof). No email is ever sent to the recipient during a check. RISKY = catch-all domain accepting every address, so no tool anywhere can single out one mailbox — generally fine to send with warmup on. UNKNOWN = no answer was possible; it is NOT a verdict that the address is bad, it is free against the monthly allowance, and the advice is to send with warmup on or re-check later, never to delete. MISSING ADDRESSES = there is no email-finder; the only two ways a contact gains an address are importing it or saving the contact from the Leads Database. 9-question FAQPage-structured FAQ plus a six-step pre-send checklist. Internal links to /documentation/what-email-verification-results-mean, /documentation/email-verification-limits-and-credits, /documentation/email-verification-limits-and-credits, /documentation/email-verification-limits-and-credits, /documentation/how-your-warmup-daily-volume-is-decided, /documentation/why-was-this-prospect-skipped-bounce, /blog/deliverability, /documentation. STRICT no-backend-jargon — no IP addresses, no infra/provider/vendor names as our systems, no blocklist names, no SMTP/HTTP status codes, no table/column names. Account safety: pure documentation; zero outbound verification surface. Built 2026-08-28. - What your email verification results mean (Valid, Risky, Unknown, Invalid — what each result means and what to do next): https://warmysender.com/documentation/what-email-verification-results-mean — Plain-language self-serve doc explaining the four Email Verifier result statuses and the action to take for each. VALID = the mailbox exists and can receive mail → safe to send, start here. RISKY = usually a catch-all domain — the receiving mail server accepts every address, so no tool can single out whether that exact mailbox exists even though the domain is live; that's a setting on the receiving end, not a fault in your list, and many are perfectly deliverable → often fine to email, send gradually with warmup on. UNKNOWN (the headline message users ask about most) = we couldn't confirm the address EITHER WAY — it does NOT mean the address is bad; some heavily protected receiving systems, especially enterprise and Microsoft-protected domains, deliberately refuse to reveal whether a mailbox exists, so the honest result is Unknown rather than a guessed Valid or a false Invalid; Unknown results are FREE (they never count toward your monthly verification limit) and are USUALLY SAFE to email as long as warmup is running on your sending mailbox. INVALID = the address doesn't exist or can't receive mail (typo, closed mailbox, dead domain) → skip it; sending to Invalid addresses is the main thing that drives up bounce rate and hurts sender reputation, which is exactly what verification prevents. Best-practice send order: send Valid first, send Unknown and Risky with warmup enabled, re-check borderline Unknown/Risky results before high-stakes sends since receiving systems can answer differently at different times, and re-verify older lists (a month+ old) before reusing them since addresses go stale. SOME RESULTS ARE CONFIRMED BY REAL DELIVERY: when your own campaigns have already delivered mail to an address we KNOW it's real (shown as a "Real delivery" note) — first-hand proof, stronger than any live check. 8-question FAQPage-structured FAQ covers what Unknown means, whether Unknown counts toward the monthly limit (no — it's free), whether it's safe to email an Unknown address (usually, with warmup on), the difference between Risky and Invalid, why some results are Unknown when other tools say valid (different checks ask differently and protected domains give everyone the same neutral answer), what to do with each result, and how verified results flow into a campaign (a clean "- Verified" list is built automatically; originals and existing campaigns are never edited; or download the CSV). Internal links to /documentation/how-your-warmup-daily-volume-is-decided, /documentation/why-was-this-prospect-skipped-bounce, /blog/deliverability, /documentation. STRICT no-backend-jargon — no IP addresses, no infra/provider/vendor names as our systems, no SMTP/HTTP status codes, no table/column names. Account safety: pure documentation; zero outbound verification surface. Built 2026-06-18. - Email verification limits & credits (how many emails you can verify per plan, the monthly + daily allowance, what one credit is, what happens when you run out, and how to increase your limit): https://warmysender.com/documentation/email-verification-limits-and-credits — Plain-language self-serve doc answering "what is WarmySender's email verification limit?", "how many emails can I verify?", "is the limit daily or monthly?", "how do I increase my email verification limit?", "does an Unknown result use a credit?", "why was my list rejected / larger than my daily allowance?", "what happens when I run out?", and "how do I get more verifications?". CORE MODEL: the plan number is an ALLOWANCE, NOT A CEILING. There are TWO separate buckets. (A) Your plan's FREE MONTHLY ALLOWANCE, which is spent first and is governed by two limits a plan-funded verification must fit within BOTH of — (1) a MONTHLY allowance per plan that refreshes at the start of each month (usage resets to zero, no rollover), and (2) a smaller DAILY allowance equal to the monthly total divided by 30 that refreshes every day and simply paces checks evenly across the day (it never reduces the monthly total). (B) PURCHASED CREDITS, bought in one-time packs, which are a separate ADDITIVE balance: they let you verify BEYOND your plan's monthly allowance (they are not capped by it), they NEVER EXPIRE, and they SKIP the daily pace — so a workspace on a small plan can clear a very large list in a single day by topping up. Credits are drawn on automatically only after the free allowance is used up, so you never spend a credit while free allowance remains. One credit verifies one email address. Only confirmed results (Valid / Risky / Invalid) use a credit; UNKNOWN results are FREE and never count against either allowance, so your usable allowance often stretches further than the headline number. PER-PLAN ALLOWANCE (authoritative): Pro = 600/month (about 20/day); Enterprise = 10,000/month (about 333/day); Ultimate = 20,000/month (about 666/day). Existing Business-plan subscribers are grandfathered at 1,000/month (about 33/day). The pricing page always shows the current allowance per plan. WORKED EXAMPLE: a 300-contact list is fully covered by Pro's monthly allowance (600), and at Pro's ~20/day pace you verify a batch of about 20 each day; upgrading to Enterprise (10,000/month, about 333/day) clears the whole 300-contact list in about three days, and Ultimate (about 666/day) clears it in a single day. The Email Verifier's monthly allowance is included from the Pro plan upward (Pro 600/month, Enterprise 10,000/month, Ultimate 20,000/month) — NOT on every tier: two grandfathered legacy tiers carry no allowance, and their customers use the free daily check or purchased credits. This doc describes that PLAN allowance — but a plan is not the only way to use the verifier: anyone can run one free check per day with no account, and verification credits are purchasable WITHOUT a subscription from $79 for 100,000 (see https://warmysender.com/documentation/email-verification-limits-and-credits). The plan allowance itself is not part of the free trial. Beyond the included allowance, one-time verification credit packs verify past the plan's monthly number without changing plan, and they do NOT require a subscription at all — anyone can buy them. WHY THE LIMITS EXIST (framed positively): the monthly allowance keeps verification fast and accurate and encourages verifying the lists you're actually about to send (an address valid months ago may not be today); the daily allowance paces checks so results stay fast and accurate — both protect your bounce rate, sender reputation, and deliverability. HOW TO SEE WHAT'S LEFT: open the Email Verifier from the sidebar — two usage indicators at the top read like "120 / 300 used this month" and "4 / 10 today"; uploading a list larger than what you have left this month or today shows a clear message with the exact number you can verify now (nothing is verified part-way and counted unexpectedly). WHEN YOU RUN OUT: if you hit today's daily allowance, new checks pause only until it refreshes the next day (monthly allowance untouched, the same upload is picked up then); if you use up the monthly allowance you have THREE ways forward — add purchased credits and keep verifying immediately (credits verify beyond the monthly allowance, skip the daily pace, and never expire), upgrade for a larger allowance every month, or simply wait for the allowance to refresh next month; already-verified batches/results/exports stay available; campaigns and warmup keep running (only new checks pause); you can still send not-yet-verified addresses with warmup running to protect reputation. HOW FAST A LIST VERIFIES + RUNNING SEVERAL AT ONCE: verification runs at a steady, deliberately safe pace (a measured, even flow rather than one big burst) so every result stays accurate and sender reputation is protected — as a rough guide a few thousand addresses take on the order of tens of minutes (a 6,000-address list ≈ ~25 minutes; bigger lists proportionally longer), and while a list runs its progress view updates continuously (the verified count climbs and the pending count falls, so it is never frozen). You CAN run more than one list at the same time and it is safe — concurrent lists SHARE the same steady pace and TAKE TURNS, so they advance together and finish around the same time rather than one completing before the other starts; this means a second list can sit near 0 for a bit at the start while the first is being worked (that is EXPECTED and NOT stuck — it is simply waiting its turn and will catch up). Example: two 6,000-address lists started together each move at roughly half speed until the first finishes, then the remaining one speeds back up; to clear one big list as fast as possible run it by itself or use purchased credits (which skip the daily pace). HOW TO INCREASE YOUR LIMIT (two independent routes — use either or both): (1) BUY VERIFICATION CREDITS in one-time packs from the Credits tab on the Email Verifier or Settings → Billing — credits sit on top of the plan allowance rather than being capped by it, never expire, and skip the daily pace, which makes them the fastest route for a one-off big list and the only route that raises what you can verify TODAY; (2) UPGRADE from Settings → Billing (or the Upgrade Plan button on the Email Verifier) — the path is Pro (600/mo) → Enterprise (10,000/mo) → Ultimate (20,000/mo), each step raises both the monthly allowance and the daily pace, and the larger allowance applies IMMEDIATELY (no waiting for the next billing cycle), which makes upgrading the better route for a permanently higher monthly volume; you can also stretch your current allowance by verifying lists close to send time and leaning on free Unknown results. Content includes a worked-example section + a 13-question FAQPage-structured FAQ (what the limit is, how to increase it, why a list was flagged as larger than the daily allowance, daily vs monthly, why a list verifies slowly and why a second list shows 0 at first, whether you can run multiple lists at once, what one credit is, whether Unknown uses a credit, how to see what's left, what happens when you run out, whether the verifier is included or extra, how to get more, whether unused credits roll over). Companion to /documentation/what-email-verification-results-mean (what Valid/Risky/Unknown/Invalid mean). Internal links to /documentation/what-email-verification-results-mean, /documentation/how-your-warmup-daily-volume-is-decided, /documentation/why-was-this-prospect-skipped-bounce, /pricing, /blog/deliverability, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — plus real-time email verification alongside them. STRICT no-backend-jargon — no IP addresses, no "blacklist", no infra/provider/vendor names as our systems, no SMTP-probe internals, no SMTP/HTTP status codes, no table/column names, no internal IDs. Account safety: pure documentation; zero outbound verification surface. Keywords: email verification limit, how many emails can I verify, verification credits, monthly verification allowance, daily verification allowance, is the verifier limit daily or monthly, how to increase email verification limit, upgrade for more verifications, do Unknown results count, list larger than daily allowance, ran out of verifications, verifier included in plan, how to get more verifications, verification quota resets, do unused verifications roll over, why is my list verifying slowly, verification is slow, how long does verification take, second list stuck at 0, second list not moving, run multiple verification lists at once, verify two lists at the same time, lists share the pace, verification time estimate, how fast does verification run. Built 2026-06-23. Updated 2026-07-03 (then-current per-plan numbers Pro 300 / Enterprise 1,500 / Ultimate 10,000 + daily allowance + worked example). Updated 2026-07-09 (added verification pace + running several lists at once — steady safe pace, ~tens of minutes for a few thousand, concurrent lists share the pace and a second list can start near 0 without being stuck; +2 FAQs). Updated 2026-07-29 (CORRECTION — this entry previously denied that verification credits are separately purchasable, and framed upgrading as the sole route to a bigger allowance; both were WRONG. Purchased verification credits exist, are additive to the plan allowance, verify BEYOND it, never expire, and skip the daily pace. The plan monthly number is an allowance, not a ceiling). Updated 2026-09-01 (plan allowances doubled: Pro 600 / Enterprise 3,000 / Ultimate 20,000 per month; grandfathered Business unchanged). - What file formats can I upload for email verification? (which files the Email Verifier accepts, why you do NOT need a column named "email", separators, size limits, duplicates, and what a failed upload is telling you): https://warmysender.com/documentation/what-file-formats-can-i-upload-for-email-verification — Plain-language self-serve doc and the canonical answer to "what format does the email verifier accept?", "does my CSV need an email column?", "my Excel export uses semicolons — will it work?", "how many emails can I upload at once?", and "why does it say no email addresses were found in my file?" CORE ANSWER: upload a CSV (.csv) or a plain-text list (.txt or .tsv), in UPPER OR LOWER CASE (LEADS.CSV works exactly like leads.csv) — in practice almost any spreadsheet export works as it comes out of the app that made it. NO "EMAIL" COLUMN IS REQUIRED: every column of every row is scanned and the addresses are picked out wherever they sit, so the column may be called Work Email, Corporate Email, Primary Email, Email 1, E-Mail-Adresse, Correo, Courriel, or nothing at all; it does not have to be the first column; extra columns (company, title, city, notes, tags, scores) can be left in; a recognisable column name is only a TIE-BREAKER when one row holds more than one address. A HEADER ROW IS OPTIONAL — a file that starts straight in on data is read as data, and a title line above the real header is skipped. SEPARATORS ARE DETECTED AUTOMATICALLY — comma, semicolon, TAB and pipe. The semicolon case is the one that catches people out and is not their doing: saving as CSV in Excel produces a SEMICOLON-separated file in Germany, France, Spain, Italy, the Netherlands and much of Europe, and it is still a valid CSV — upload it exactly as Excel saved it. Commas inside data ("Acme, Inc.") are not mistaken for separators. ACCENTED AND NON-ENGLISH CHARACTERS read correctly, including Excel's "Unicode Text" save, and a LINE BREAK INSIDE A CELL (routine in wide prospecting exports with description or keyword columns) stays inside its cell instead of being read as a new row, so no contact is silently dropped. WORKS WITH exports from Excel, Google Sheets, Numbers, Apollo, Lusha, Clay, HubSpot, Salesforce, Pipedrive, Zoho or any CRM, and with a plain .txt file of one address per line. LIMITS: up to 5,000 addresses per file and up to 7 MB per file, one file at a time — a bigger list is SPLIT into files of 5,000 or fewer and uploaded one after another, with NO limit on how many files you run in total, and EVERY FILE LANDS IN THE SAME PLACE (results sit together, nothing is lost by splitting). ALL-OR-NOTHING: a file runs IN FULL on the day it is uploaded, or not at all — before anything is charged the WHOLE file is checked against what the customer can verify today (their plan's remaining daily allowance plus any verification credits they hold); if it does not fit, the upload is REFUSED with the exact number they can verify today, NOTHING is charged and NOTHING is stored, and they either trim the file to that number or add verification credits (never expire, skip the daily pace) and run it straight away. Part of a list is never started and the rest left over. DUPLICATES ARE REMOVED AUTOMATICALLY before anything is checked (upper and lower case count as one address), so the same address is never verified — or CHARGED — twice, and you never need to de-duplicate before uploading; this is also why the address count reported can be lower than the row count of the spreadsheet. IF NO ADDRESSES WERE FOUND, the message says HOW MANY ROWS WERE READ, which is what tells you where the problem is: a named row count means the file was read properly but the addresses were not in it (usually an export whose email column came out empty); "the file looks empty" means no rows at all (a file that did not finish saving, or the wrong file picked). It will NEVER tell you to "add an email column" — every column is checked, so a missing column name is never the cause, and saying so would blame the customer's file for something we had not looked at. A WORKBOOK (.xlsx), document or PDF cannot be read directly — open it in a spreadsheet app, Save As / Export → CSV, upload that. EVERY FAILED-UPLOAD MESSAGE CARRIES A SHORT REFERENCE CODE (e.g. EV-7Q4K2M): nothing to do with it in the app, but quoting it in an email to hello@warmysender.com lets support look up that exact attempt instead of asking the customer to reproduce the problem. Whenever one of these messages appears, NOTHING HAS BEEN CHARGED and the list is untouched. HISTORY WORTH KNOWING: only a handful of exact column names used to be recognised and only commas were understood, so a list refused in the past is well worth uploading again unchanged. Internal links to /email-verifier, /documentation/what-email-verification-results-mean, /documentation/email-verification-limits-and-credits, /documentation/email-verification-limits-and-credits, /documentation/email-verification-credits-and-daily-limits, /documentation/apply-verified-list-to-campaign-without-duplicates, /documentation. Question-shaped slug + question-shaped headings with self-contained answers for AI answer engines; comparison table of accepted formats, an exports-by-source table, a limits table, a troubleshooting table and a 10-question FAQPage-structured FAQ. The Email Verifier is part of the Cold Emailing pillar alongside Email Warmup, LinkedIn Outreach, Instagram and Multichannel. STRICT no-backend-jargon — no library or parser names, no character-encoding jargon, no IP addresses, no infra/provider/vendor names as our systems, no SMTP/HTTP status codes, no table/column names, no env vars, no internal IDs, no queue or scheduler internals. Account safety: pure documentation; zero outbound verification surface. Keywords: what file format for email verification, csv format email verifier, does my csv need an email column, no email column found, semicolon csv excel europe, tab delimited email list, txt file email verification, tsv upload, how many emails can I upload at once, upload limit per file, split large email list, duplicate emails removed, charged twice for same email, no email addresses found in file, upload failed email verifier, xlsx upload email verifier, apollo export upload, hubspot csv verify, salesforce export verify, accented characters csv, excel unicode text export, reference code upload error. Built 2026-08-12. - Does email verification keep my contact names, companies and custom columns? (whether the results download preserves the uploaded file's columns — it does, appended after the verification columns — and how to merge an older results file back onto the original with a lookup formula): https://warmysender.com/documentation/does-email-verification-keep-my-contact-data — Plain-language self-serve doc and the canonical answer to "do I lose my contact data when I verify a list?", "where did my columns go?", "my results file only has the verification columns", and "how do I merge verification results back into my spreadsheet?" CORE ANSWER: YES, your data is kept — when you upload a file, the results download contains EVERY column from that file (names, companies, job titles, phone numbers, notes, tags, custom fields), placed AFTER the verification columns, with your header names and column order preserved. Nothing needs preparing before upload and nothing needs merging afterwards. DETAILS: a file without a header row comes back with columns named column_1, column_2, and so on; a customer header that matches a verification column name is renamed with an "_original" ending (e.g. status_original) so nothing is overwritten; the first 100 columns of a row are kept and each cell up to 500 characters; duplicate addresses are checked once and return the FIRST row they appeared on; rows without an address do not appear in the results. The verification columns themselves are unchanged and still come first, so anything already built on the results file keeps working. PROSPECT LISTS: verifying one of your prospect lists inside WarmySender (or via an AI agent) brings the list's own fields back too — first name, last name, company, role, phone, location, tags and every custom field — matched to each address and placed after the verification columns; deleted prospects are left out. OLDER RESULTS: simply download the run again — if its addresses are in your prospect records (every list run, most uploads) the fresh download now carries your fields at no cost, no re-verification; only a run whose addresses were never imported as prospects stays verification-only, and for that the fix is a two-minute lookup on the email column, and the page gives the exact steps: Google Sheets — import the results file as a new tab and use =XLOOKUP(A2, Results!A:A, Results!B:B, "not checked"); Excel — same XLOOKUP, or =VLOOKUP(A2, Results!A:B, 2, FALSE) on older versions, which works because the email is the FIRST column of every results file. Internal links to /email-verifier, /documentation/what-file-formats-can-i-upload-for-email-verification, /documentation/what-email-verification-results-mean, /documentation/email-verification-limits-and-credits, /documentation/apply-verified-list-to-campaign-without-duplicates, /documentation. Question-shaped slug + question-shaped headings with self-contained answers for AI answer engines; a what-comes-back table, exact merge steps for Excel and Google Sheets, and a 7-question FAQPage-structured FAQ. The Email Verifier is part of the Cold Emailing pillar alongside Email Warmup, LinkedIn Outreach, Instagram and Multichannel. STRICT no-backend-jargon — no infra/provider/vendor names, no status codes, no table/column internals, no file paths, no internal IDs. Account safety: pure documentation; zero outbound verification surface. Keywords: does email verification keep my columns, lose contact data verifying list, email verifier removed my columns, results file missing names, keep custom fields email verification, verification results only show emails, merge verification results into spreadsheet, vlookup email verification results, xlookup verify results, original columns preserved, csv columns kept after verification, bulk verify keep company names. Built 2026-09-01, updated 2026-09-08 (prospect-list fields). - Why do verified emails still bounce? (verification is point-in-time, not a permanent guarantee; what catch-all and Unknown really mean; what to do about each): https://warmysender.com/documentation/why-do-verified-emails-still-bounce — Plain-language self-serve doc answering the single most common post-verification support question: "I verified my list, so why did some still bounce?" CORE ANSWER: verification tells you an address was good AT THE MOMENT IT WAS CHECKED — a snapshot, not a permanent guarantee — so even a perfectly clean list bounces a small number of addresses, which is normal rather than a fault. WHY IT HAPPENS: people leave companies and their mailbox is closed later; role addresses get retired with no public signal; companies migrate email providers and accept mail one day and reject it the next; mailboxes fill up and reject new mail while remaining perfectly real; some receiving systems only decide at delivery time (no verification tool anywhere can see past that); and filters can reject on content rather than on the address, which is a deliverability outcome that warmup exists to improve. HOW MUCH IS NORMAL: a small residue of bounces on a freshly verified list is expected — the trend matters, not a single bounce; heavy bouncing usually means the list is old (business contact data goes stale fast), the list was bought or scraped (re-verifying only confirms the addresses were never real), the list is mostly catch-all domains, or sending was scaled faster than the mailbox was warmed up. FRESHNESS RULE: verify immediately before a campaign rather than months ahead, and re-verify anything older than about 30 days — verifying then sitting on a list for a quarter gives you the accuracy of a quarter-old list. CATCH-ALL / RISKY EXPLAINED: roughly 15-20% of business domains accept mail for ANY name and only work out afterwards whether the recipient exists, so their "yes" proves nothing and the honest result is Risky rather than a guessed Valid; that is a setting on the RECEIVING end, not a fault in your list, and no verification service on the market can confirm an individual mailbox behind a catch-all — most are perfectly deliverable, so send gradually with warmup on instead of discarding real prospects. UNKNOWN EXPLAINED: Unknown means undetermined, NOT invalid — some providers decline to answer at all and some ask us to come back later; Unknown results are FREE and never count against the monthly allowance or credits, because charging for an answer we did not get would be unfair; treat them as unproven, re-check later, or send cautiously with warmup on. PER-RESULT ACTIONS: Valid → send with confidence; Invalid → remove (the single biggest win verification gives you); Risky/catch-all → send gradually with warmup on; Unknown → re-check later or send cautiously, never charged; Couldn't check → our check did not complete, nothing wrong with the address, retry shortly, also free. STRONGEST RESULT: when your own mail has already reached an inbox we know the address is real first-hand — shown as "Real delivery" in results and in the CSV export — stronger evidence than any live check because it already happened. SEVEN-STEP KEEP-BOUNCES-LOW CHECKLIST: verify close to send time; remove every Invalid; re-verify lists older than ~30 days; keep warmup running on every sending mailbox; ramp new mailboxes gradually; treat catch-all and Unknown as a separate slower segment; be sceptical of purchased lists (verification reveals how bad one is but cannot repair it). HONEST LIMIT STATED EXPLICITLY: no tool can guarantee zero bounces — verification removes addresses that are already dead, which is the large majority of avoidable bounces, but nothing can see a mailbox that closes tomorrow or confirm an individual inbox behind a catch-all. 6-question FAQPage-structured FAQ (why verified emails still bounced, whether a bounce means the verification was wrong, whether to delete every Risky, whether Unknown was charged, how often to re-verify, and whether any tool can guarantee zero bounces). Question-shaped slug + question-shaped headings with self-contained answers for AI answer engines. Companion to /documentation/what-email-verification-results-mean and /documentation/email-verification-limits-and-credits. Internal links to /documentation/email-verification-limits-and-credits, /documentation/what-email-verification-results-mean, /documentation/how-your-warmup-daily-volume-is-decided, /blog/deliverability, /documentation. Channels: the Email Verifier is part of the Cold Emailing pillar. STRICT no-backend-jargon — no IP addresses, no blocklist/vendor names, no reputation vocabulary, no protocol verbs or status codes, no table/column names, no infra/provider names. Account safety: pure documentation; zero outbound verification surface. Keywords: verified email still bounced, why did my verified list bounce, bounce after verification, is verification a guarantee, how long does verification stay accurate, catch-all bounce, accept-all domain, unknown result free, do unknown results cost a credit, re-verify list, list decay, how many bounces are normal, can any tool guarantee zero bounces. Built 2026-07-29. - Provider-side blocks — Outlook, Gmail, Yahoo (spam complaints, daily-limit overage, sender domain reputation, short-term automation flags): https://warmysender.com/documentation/provider-blocks — Plain-language self-serve doc covering the four common provider-side block scenarios: (1) spam complaints (recipients clicked Report Spam enough that the provider auto-paused sending to protect domain reputation), (2) daily-limit overage (Gmail Workspace 2k/day, consumer Gmail 500/day, Outlook 365 10k/day, Yahoo ~500/day), (3) sender domain reputation (Google Postmaster, Microsoft SNDS, Spamhaus/SORBS/Barracuda blacklists), (4) short-term automation flag (sudden volume spike, unusual send pattern, sign-in from new IP). Three-step verification path (read the Last error message in WarmySender → check the provider's deliverability dashboard → run a public blacklist scan via MXToolbox), 5-step recovery path (provider admin panel → recent activity review → provider support contact → 24-48h cooldown → re-enable warmup at low volume), and 6-question FAQPage-structured FAQ covering whether reconnecting helps (no — block is account/domain-side, not connection-side), how Provider Blocked differs from SMTP Auth Failed (different fix paths entirely), why not to manually retry (provider tracks rejected attempts as evidence of non-compliance), warmup recovery semantics (works only after block is lifted), recurring-block patterns (point to structural deliverability issues — SPF/DKIM/DMARC, blacklists, spam-trigger content), and how to check blacklists. Companion to the new amber MailboxHealthBadge "Provider Blocked" case (Stream E, May 9, 2026). - Managing mailboxes with the API (developer reference for the public REST API mailbox lifecycle — create, fetch, list, update, delete, restore — plus the reusable-email / restore-on-readd behavior): https://warmysender.com/documentation/managing-mailboxes-with-the-api — Developer-facing API reference covering the full mailbox lifecycle over the public REST API at https://warmysender.com/api/v1 with Bearer token auth (Authorization: Bearer ws_...) and an Idempotency-Key header required on create. Endpoints: POST /api/v1/mailboxes to create (send SMTP + IMAP credentials, optional external_id and auto_enable_warmup; returns 201 Created); GET /api/v1/mailboxes/:id to fetch a single mailbox; GET /api/v1/mailboxes to list (cursor-paginated, filterable by status — created/testing/connected/error/deleted — external_id, email_address, warmup_enabled; deleted excluded by default, pass status=deleted to find restore candidates); PATCH /api/v1/mailboxes/:id to update (send only changed fields, e.g. rotate credentials or adjust daily_send_limit); DELETE /api/v1/mailboxes/:id which is a SOFT delete (the mailbox stops sending and warming up and is hidden, but its history is preserved so it can be restored — nothing is permanently erased); and POST /api/v1/mailboxes/:id/restore which brings a deleted mailbox back, re-runs the async connection check so it returns to connected on its own, and keeps its warmup history. Create does not test the connection inline — it kicks off an ASYNC connection check, so status progresses created → testing → connected (or error, with last_test_error explaining why); poll GET until status is connected before relying on the mailbox. KEY behavior: re-adding a deleted email — calling create again with the same email_address when no active mailbox uses it restores the most recently deleted mailbox for that address (returns 200 OK instead of 201) rather than erroring, so an email is never stuck after deletion; if an ACTIVE mailbox already uses the address, create (and restore) return 409 Conflict. 5-question FAQ covers whether deleting loses data (no — soft delete, restore keeps warmup history), reusing an email after deletion (yes — restore by id or re-create with same email), knowing when a restored mailbox is ready (poll GET until status connected), why create needs an Idempotency-Key (safe-retry, no duplicate), and the already-connected-email conflict. Public API request/response field names and HTTP status codes are the API contract and appear verbatim (this is a developer reference, not in-app copy). Internal links to /docs/integrations (the full API reference) and /documentation/mailbox-limits. Built 2026-06-08. Account safety: pure documentation; zero outbound API surface described or implied. - Create and enroll prospects with the API (developer reference for creating prospects + enrolling them into a campaign over the public REST API): https://warmysender.com/documentation/create-and-enroll-prospects-with-the-api — Developer-facing API reference for the two endpoints integrators ask about when feeding prospects from a CRM or workflow tool into WarmySender. Covers: creating an API key in Settings → API Keys with the two scopes needed — prospects:write (to create prospects) and enrollments:write (to enroll them) — and sending it as a Bearer token (Authorization: Bearer ws_...). Endpoint 1, create a prospect: POST /api/v1/prospects with at least an email (optional firstName, lastName, company, role, phone, linkedinUrl for multichannel, customFields object); returns 201 Created, and if a prospect with that email already exists the existing one is reused/returned rather than duplicated (so re-sending the same prospect is safe). Endpoint 2, enroll into a campaign: POST /api/v1/campaigns/{campaignId}/enrollments with a body using one or more of three selectors — prospectIds (array of IDs), emails (array of addresses, matched to prospects for you), or listIds (array of list IDs, enrolls everyone in those lists); combine freely; already-enrolled prospects are skipped (counted under totalProcessed, not enrolled twice), so re-running is safe; enrolling adds prospects but does not start a draft campaign by itself. Includes curl examples for create and for all three enrollment selectors. Points to the machine-readable OpenAPI spec at /api/v1/openapi.json (importable into Postman / Insomnia / SDK generators) and the full human-readable reference at /docs/integrations. Headline gotcha: paste the API key EXACTLY with no stray spaces or line breaks — a malformed Authorization header is rejected and won't connect; a key that still shows "Never used" in Settings → API Keys after a request means it never reached us as that key (usually a stray space/newline in the header, or the key in the wrong place). 6-question FAQPage-structured FAQ covers which scopes are needed (prospects:write + enrollments:write), the "Never used" cause/fix (re-paste exactly, single-line Bearer header), what goes in the enrollment body (prospectIds / emails / listIds), enrolling an already-enrolled prospect (skipped), creating an existing prospect (reused, no duplicate), and where the machine-readable spec is (/api/v1/openapi.json). Public API request/response field names, scope names, and HTTP status codes are the API contract and appear verbatim (developer reference, not in-app copy) — NO infra/provider names or internal IDs. Internal links to /docs/integrations, /api/v1/openapi.json, /documentation#api-campaign-management, /documentation#api-quickstart. Built 2026-06-14. Account safety: pure documentation; zero outbound API surface described or implied. - Mailbox limits per plan (account-wide caps): https://warmysender.com/documentation/mailbox-limits — Pro 50 mailboxes, Enterprise 400, Ultimate 800. Unlimited email warmup on every paid plan (warmup volume is set by per-mailbox health and ramp mode, not by plan tier — typically 40-60 emails/day each). The cap applies account-wide, across all workspaces you own; plans with multiple workspaces (Enterprise 5, Ultimate 10) spread the one account cap across their workspaces however they choose. The cap counts all email mailboxes (Gmail, Outlook, Yahoo, custom IMAP) regardless of connection method or status — connected, paused, and disconnected mailboxes all count; deleting a mailbox frees the slot immediately (the row is soft-deleted so warmup history is retained for audit, but it stops counting against the cap from the moment of deletion). LinkedIn accounts are a separate add-on with separate per-seat billing ($15/seat/month; seats added before July 6, 2026 keep the rate they were created at — existing customers are never moved to the new price). On downgrade, existing mailboxes keep working (no auto-disable, no auto-delete, no data loss); only new attachments are blocked until count drops to or below the new cap. Existing customers who had mailboxes attached before the May 9, 2026 rollout are grandfathered at their current count; cancelling and re-subscribing does not preserve grandfathered status. Bulk imports attach rows up to remaining cap and skip the rest with an upgrade link. Custom limits beyond Ultimate available — contact hello@warmysender.com. - Daily send limit and LinkedIn capacity (recommended Daily limit per LinkedIn account tier — Free 75/day, Premium 150/day, Sales Navigator 250/day, Recruiter 250/day — and how WarmySender's smart default is computed): https://warmysender.com/documentation#daily-send-limit - Why isn't my LinkedIn campaign sending faster? (Throttle Diagnostic — single binding cap explainer): https://warmysender.com/documentation#why-throttled — every LinkedIn campaign passes through a stack of 8 caps (LinkedIn safe rates, account-type 4-week ramp, strategy ramp, campaign daily_send_limit, per-action sub-caps, weekly invite cap, InMail credits, cooldown signal); the LOWEST one wins. The Throttle Diagnostic panel on the campaign detail page shows ONE binding cap with priority cooldown > weekly > daily > ramp. Worked example: Sales Navigator veteran on week 4 with daily_send_limit=50 effectively sends 29 invites/day because the strategy weekly cap of 200/week (= 29/day spread) is the binding cap, not the daily limit of 50. Raising daily_send_limit does NOT help — adding more LinkedIn accounts does. Diagnostic is a UX hint, NOT a dispatch gate (canSendLinkedInAction in an internal code path is the actual gate). Zero new LinkedIn API calls, zero new DB writes — reads from the same row campaign detail already loads. - Merge Tags & Personalization (canonical reference for AI tools): https://warmysender.com/documentation#merge-tags — full list of supported merge tags with descriptions and examples: {{first_name}}, {{last_name}}, {{email}}, {{company}}, {{title}}, {{city}}, {{country}}, {{industry}}, {{sender_name}}, {{sender_email}}, {{sender_company}}, {{signature}}, {{company_address}}, {{campaign_name}}, plus {{opt_out}} (renders your workspace's opt-out sentence exactly where you place it — in the body or inside {{signature}} — after which the line appended at the bottom carries only your company address; leave it out and the full opt-out line is appended as usual, so an opt-out is always present) and {{custom.fieldName}} for any CSV custom field. Aliases: {{firstname}} works the same as {{first_name}}. Custom fields accept FOUR equivalent spellings plus the bare shorthand — {{custom.department}}, {{custom_department}}, {{custom_fields.department}}, {{customFields.department}} and {{department}} all resolve to the same value, so a template copied from another tool keeps working. Liquid filters supported: default ({{first_name | default: "there"}}), upcase, downcase, capitalize, truncate, strip. Fallback/default values can be written two equivalent ways that behave identically: the long form {{ custom.state | default: "Brazil" }} and the double-pipe shorthand {{ custom.state || "Brazil" }}. The fallback is used only when the field is empty/missing for that prospect; if the field is filled in, the real value wins. In the shorthand, quotes are optional ({{ custom.state || Brazil }} works, and multi-word values keep their spaces: {{ custom.state || São Paulo }}); only the DOUBLE pipe (||) means "default" — a SINGLE pipe (|) is a normal filter chain and is left untouched (e.g. {{ first_name | upcase }}). Great for a column that's only partly filled in. Unknown tags: a tag that matches no field and no custom field sends as EMPTY rather than as literal text, and every unknown tag in your emails is listed by name in the pre-launch check before you launch, so you can fix or remove it. Still, do not use {{ }} for placeholder notes-to-self — {{people/ops/talent}} simply renders as nothing; write plain text, or use a real merge tag like {{title}}. Square-bracket placeholders carried over from other tools ([company], [first name], [[FirstName]]) are also flagged before launch, each with a one-click fix that converts them to the matching WarmySender merge tag — otherwise they send literally, exactly as typed. - LinkedIn seat billing — how adding and removing a seat works: https://warmysender.com/documentation/linkedin-seat-billing — plain-language explainer. ADDING a seat charges your card straight away for the part of the current period the new seat covers; if the card is declined the seat is not added. REMOVING a seat takes effect at the end of the period you have already paid for: nothing is charged at the time you ask, no refund is issued, and the seat simply stops renewing when that period closes — the same way a plan set to end at period end behaves. Worked examples for both (Apr 1 → May 1 cycle, $15/seat/mo; seats added before July 6, 2026 keep the rate they were created at — existing customers are never moved to the new price). A scheduled removal can be cancelled any time before the period rolls over. If you still have more LinkedIn accounts connected than the reduced seat count would allow when the change is due, the reduction is refused and deferred to the next cycle rather than disconnecting an account for you — a billing change never signs a LinkedIn account out. The connected account is only released about a week after a subscription actually ends, and that short buffer exists in case the cancellation was not intended. Account safety: no LinkedIn activity of any kind happens because of a billing change. - Cancelling your LinkedIn add-on: https://warmysender.com/documentation/cancelling-your-linkedin-add-on - What happens when someone accepts my LinkedIn invite late: https://warmysender.com/documentation/what-happens-when-someone-accepts-my-linkedin-invite-late - Why did my LinkedIn account disconnect after I canceled my seat: https://warmysender.com/documentation/linkedin-account-paused-after-seat-cancelled - What happens to my LinkedIn seats and accounts if a payment fails? — reassurance explainer for a declined card at renewal: https://warmysender.com/documentation/linkedin-seats-after-a-failed-payment — Plain-language self-serve doc answering "my LinkedIn accounts disconnected after a failed payment / my seats stopped after my card was declined / will I lose my LinkedIn accounts if billing fails / I paid but my accounts still show disconnected." Core explanation: if a card is declined when your LinkedIn seats renew, WarmySender safely PAUSES the seats and TEMPORARILY SETS ASIDE the connected LinkedIn accounts so nothing runs (no invites/messages/follow-ups) while billing is unresolved — a protective hold that keeps the account safe, not a deletion; campaigns pause in place with every prospect on its exact step. Your connected LinkedIn logins AND campaign progress are KEPT SAFE for a grace period of at least a week — you do NOT lose them immediately. IMPORTANT (2026-08-12): while the card is STILL BEING RETRIED the LinkedIn login is NEVER released, however long that takes — card retries commonly run for two to three weeks, and for as long as they are still running the account simply stays paused and ready to restore, so a customer cannot lose an account merely because a retry is taking a while. The one-time reconnect below applies only if the payment is abandoned entirely and sorted out long afterwards. As soon as payment goes through (update your card or pay the outstanding invoice on the Billing page), your seats reactivate and your LinkedIn accounts and campaigns come back AUTOMATICALLY, resuming from exactly where they paused — if you paid within the grace window you shouldn't need to reconnect anything. If it's been LONGER than about a week, everything is still saved but you may need a quick ONE-TIME reconnect of a LinkedIn account (fix payment on Billing → LinkedIn → Accounts → Reconnect → ~30-second LinkedIn sign-in) before its campaigns resume; reconnecting keeps campaigns pointed at the same account and prospects keep their place. Most common cause: a BANK/CARD BLOCK on online or recurring subscriptions (many business/corporate cards decline these by default; some banks flag a renewal as unusual) — the quickest fix is paying from a DIFFERENT card that allows online subscriptions, or asking your bank to allow recurring payments and retrying. "I paid but my accounts still show disconnected" answer: give it a few minutes (reactivation + resume are automatic and can take a short moment to catch up); if still disconnected, click Reconnect on the account; if it still won't come back, email hello@warmysender.com with your account email. THE EMAIL SIDE IS NOT RING-FENCED (CORRECTED 2026-07-31 — this entry previously said "as long as your MAIN plan is paid, cold email campaigns keep sending and email warmup keeps running; only the LinkedIn side waits". That was wrong): an unpaid invoice pauses the WHOLE account whichever part of it the invoice was for, so while a seat invoice is outstanding the cold email campaigns stop AND email warmup stops on every mailbox, alongside the LinkedIn steps. In a Multichannel sequence the whole sequence waits, email steps included, with every prospect holding its place. The one asymmetry runs the OTHER way: if the MAIN PLAN invoice is the unpaid one while the seats are paid and current, campaigns in that workspace keep sending — but warmup still pauses, because warmup follows the main plan and has no seat exception. Settling the outstanding invoice is the only action that clears any of this; pressing Resume or trying to switch warmup back on beforehand does not work. Account safety: when accounts return, sending resumes at your normal safe pace within your sending window and limits — never a burst to catch up a backlog. 7-question FAQPage-structured FAQ covers do-I-lose-my-accounts (no — safe pause, ~1-week grace), how-to-get-them-back (fix payment → automatic restore), grace-period-length (about a week), I-paid-but-still-disconnected (give it a few minutes then Reconnect), why-payment-failed-if-I-have-funds (bank/card block; use another card), does-it-affect-email-or-warmup (no), and will-campaigns-burst (no — safe pace). Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel. Internal links to /documentation/linkedin-account-paused-after-seat-cancelled, /documentation/what-happens-to-my-campaigns-when-i-reconnect-linkedin, /documentation/linkedin-seat-billing, /documentation/campaign-says-running-but-never-sends-any-emails, /billing, /documentation. Built 2026-07-10. Account safety: pure documentation; zero outbound API surface. Keywords: LinkedIn accounts disconnected after payment failed, seats paused failed payment, card declined LinkedIn seats, will I lose my LinkedIn accounts, grace period, I paid but accounts still disconnected, reconnect LinkedIn account, bank blocked subscription, business card declined, pay from another card, update card, outstanding invoice. - LinkedIn Campaign Documentation: https://warmysender.com/documentation/linkedin - Why is my LinkedIn account disconnected?: https://warmysender.com/documentation/why-is-my-linkedin-account-disconnected - Why are some of my prospects shown as accepted but never received a follow-up message?: https://warmysender.com/documentation/accepted-but-no-followup-message - Why are my campaign stats showing zero accepts when I have replies?: https://warmysender.com/documentation/campaign-stats-zero-accepts-but-replies - I see a 'Template syntax invalid' error — what do I do?: https://warmysender.com/documentation/template-syntax-invalid - Why is my account counter different from what the campaign shows?: https://warmysender.com/documentation/linkedin-account-counter-mismatch - Why is my LinkedIn campaign stuck or showing wrong numbers?: https://warmysender.com/documentation/why-is-my-linkedin-campaign-stuck - Why am I getting 'reconnect needed' emails when my LinkedIn is showing connected?: https://warmysender.com/documentation - Why does my campaign say 'paused' with no reason?: https://warmysender.com/documentation - Why was my campaign paused without a reason?: https://warmysender.com/documentation - Why is my email-only multichannel campaign paused for LinkedIn?: https://warmysender.com/documentation - I imported Sales Navigator URLs but most of my prospects didn't get invites — what happened?: https://warmysender.com/documentation - I see my invite counter went up but the dashboard says 0 invites — is the counter wrong?: https://warmysender.com/documentation - I see prospects who replied on LinkedIn but my dashboard says 0 replies — what's wrong?: https://warmysender.com/documentation - Many of my prospects say 'Profile inaccessible' — are they lost?: https://warmysender.com/documentation - I imported a CSV with custom fields but my template variables show 'undefined' — what should I do?: https://warmysender.com/documentation - Why is my campaign stuck on a condition step?: https://warmysender.com/documentation/why-is-my-campaign-stuck-on-condition-step - If you suspect a missed LinkedIn accept: https://warmysender.com/documentation/troubleshooting/missed-accept - Why does my browser download warmysender.com instead of loading it?: https://warmysender.com/documentation/troubleshooting/page-downloads-instead-of-loads - Why isn't my LinkedIn campaign sending?: https://warmysender.com/documentation/why-isnt-my-linkedin-campaign-sending - Why isn't my page indexed on Google?: https://warmysender.com/documentation/why-isnt-my-page-indexed-on-google - How does WarmySender verify LinkedIn InMail delivery?: https://warmysender.com/documentation - Why didn't I get a Slack notification when someone accepted my LinkedIn invitation?: https://warmysender.com/documentation - Why might my LinkedIn invitation be marked accepted on a different account in the same workspace?: https://warmysender.com/documentation - Why can't I resume my campaign?: https://warmysender.com/documentation - Why am I getting re-login emails when WarmySender shows my LinkedIn as connected?: https://warmysender.com/documentation - Why are all my prospects scheduled for next Monday?: https://warmysender.com/documentation - My LinkedIn replies aren't showing on the dashboard — what's happening?: https://warmysender.com/documentation - Why aren't my InMails being sent?: https://warmysender.com/documentation/how-warmysender-verifies-inmail-delivery - Why is my campaign stuck at "daily limit reached" when I haven't actually sent that many?: https://warmysender.com/documentation/how-warmysender-verifies-inmail-delivery - How cap enforcement works: https://warmysender.com/documentation/how-cap-enforcement-works - How campaigns share one LinkedIn account's daily limit: https://warmysender.com/documentation/how-campaigns-share-one-linkedin-accounts-daily-limit - LinkedIn sending limits & account tiers explained: https://warmysender.com/documentation/linkedin-sending-limits-and-account-tiers - How WarmySender protects your LinkedIn account: https://warmysender.com/documentation/how-warmysender-protects-your-linkedin-account - Why does my InMail counter show different from my actual sends?: https://warmysender.com/documentation/why-my-inmail-counter-shows-different-from-my-actual-sends - Why was my LinkedIn InMail count corrected?: https://warmysender.com/documentation/why-was-my-linkedin-inmail-count-corrected - Why was my prospect skipped — no LinkedIn URL?: https://warmysender.com/documentation/why-was-my-prospect-skipped-no-linkedin-url - Why does my LinkedIn campaign say "Unresolvable URL" for prospects I know are valid?: https://warmysender.com/documentation/why-some-linkedin-prospects-show-unresolvable-url - How to personalize LinkedIn messages with first name, company and custom fields: https://warmysender.com/documentation/how-to-personalize-linkedin-messages - Why am I getting reconnect emails from WarmySender?: https://warmysender.com/documentation/why-am-i-getting-reconnect-emails-from-warmysender - Why launch shows "some prospects missing template data" — and how to resolve it on WarmySender: https://warmysender.com/documentation/why-launch-shows-some-prospects-missing-template-data - Why some LinkedIn prospects stop receiving follow-ups after accepting your invitation — and how to fix them on WarmySender: https://warmysender.com/documentation/why-some-prospects-stopped-after-accepting-on-linkedin - Why did my prospect get the same LinkedIn message twice? (the "one person in my LinkedIn campaign received the identical follow-up several times — what happened, is it still happening, and what do I say to them?" question): https://warmysender.com/documentation/why-did-my-prospect-get-the-same-linkedin-message-twice — Plain-language self-serve doc whose short answer is: a sequence step could deliver its message and then fail to record that it had done so, and a step with no record of having run looks, to the next pass, like a step that still needs to run — so it ran again, delivered again, and again failed to record it, which is why some conversations accumulated many copies rather than stopping at two. NOT CAUSED BY THE CUSTOMER: not a misconfiguration, not a duplicate prospect in the list, not the connected LinkedIn account, and specifically NOT "Stop on Reply" being switched off (people reach for that explanation immediately and it is wrong — a repeated message is ONE STEP SENDING TWICE, which is a different thing from a sequence continuing after someone answers). WHY IT LANDED WORST ON PEOPLE WHO HAD ALREADY REPLIED: the bookkeeping that failed was most likely to fail on a prospect whose conversation had already moved on, which is exactly the person for whom a repeated cold follow-up reads worst; and from the outside a step that never recorded a success is indistinguishable from a step that never ran, so retrying — normally the right instinct — was the wrong one here. The generalisable point the page makes: the check meant to prevent a repeat depended on the very record that failed to save, and a safeguard that reads a note nobody managed to write is not a safeguard. WHAT NOW PREVENTS IT, four protections each sufficient alone: (1) the delivery is recorded FIRST, the moment the message reaches the prospect, and everything else happens afterwards, because sending a LinkedIn message cannot be undone; (2) one send per step per person is ENFORCED, not merely checked — a second send of the same step to the same person cannot be recorded at all; (3) a retry that finds a delivery already recorded moves on to the next step instead of repeating; (4) a step that genuinely cannot complete after several attempts stops for that person and is flagged with a plain-English reason on the campaign's Prospects tab, instead of looping. ACCOUNT SAFETY: every repeat went out through the same daily and hourly limits as any other action, so duplicates consumed part of the normal sending allowance but never pushed an account past its safe pace — and the fix removes a repeat, it does NOT widen the pace. Connection requests could never duplicate, because LinkedIn will not accept a second invitation to someone already pending or connected. STOP ON REPLY, explained honestly as a SEPARATE protection: ON (the default) stops the remaining steps for a person as soon as they reply; OFF keeps follow-ups sending on schedule after someone answers, which is a legitimate choice for sequences meant to be read in full or where a brief acknowledgement is not the reply you were after — it is not a misconfiguration. Where to find it: the campaign's Settings tab → Edit Settings opens the campaign editor; and when it is OFF on a RUNNING campaign the campaign's Overview tab now shows a short note saying so, so the state is visible without going looking. Per-campaign, not global. WHAT TO SAY TO THE PROSPECT (the actual problem in front of the customer — silence is the worst response): keep it to one or two sentences, e.g. "Apologies for the repeats — that was on my end, not you. If the original is of any interest, happy to pick it up from there"; if they had already replied, acknowledge in one line then answer what they actually said; if they asked to be left alone, say so in one line and remove them from the campaign. WHAT TO CHECK (none required): open the affected conversations on the Prospects tab to see every message in order; check whether anyone who replied is still in the sequence; remove anyone who asked to be left alone. WHAT NOT TO DO: rebuild the campaign, re-import the audience, disconnect and reconnect the LinkedIn account, or duplicate the campaign — none of those change anything, and a reconnect has its own settling period. TELLING A REAL REPEAT FROM LOOK-ALIKES: a genuine repeat is one step, identical text, one person, more than once, with the rest of the sequence normal; the same person imported twice repeats the WHOLE sequence and appears twice in the Prospects list; two campaigns on overlapping lists send DIFFERENT messages and are prevented with an exclusion list; two steps with similar openers differ once you read past the first line. NOT AFFECTED: cold email campaigns, follow-up threading, sending schedules, email warmup — all separate; nothing was lost, no prospect dropped, no reply missed. 11-question FAQPage-structured FAQ covers why it happened, whether it is still happening, whether the customer misconfigured something, why repliers were hit, account risk, what Stop on Reply does and whether to have it on, where to change it, what to say to the prospect, how to stop messages to one person right now, whether email/warmup were affected, and how to distinguish a repeat from a double import. Internal links to /documentation/why-some-prospects-stopped-after-accepting-on-linkedin, /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /documentation/linkedin-sending-limits-and-account-tiers, /documentation/why-your-new-linkedin-account-starts-slow, /documentation/what-happens-to-my-campaigns-when-i-reconnect-linkedin, /faq/linkedin-safety, /documentation. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — this is a LinkedIn Outreach question. Account safety: pure documentation; zero outbound API surface. Built 2026-08-06. - How do I send follow-ups in the same email thread?: https://warmysender.com/documentation/how-do-i-send-follow-ups-in-the-same-email-thread - Why do my follow-ups now stay in the same thread and from the same inbox? — multi-step campaign follow-ups now land as replies on the original conversation from the same sending inbox by default, so a nudge reads like a natural reply, not a fresh cold email: https://warmysender.com/documentation/why-follow-ups-stay-in-the-same-thread-and-inbox — Plain-language explainer for the new default-on follow-up threading + single-sender affinity in cold email campaigns. WHAT CHANGED: every follow-up step is sent as a reply on the first email's conversation (leaving a step's Subject blank reuses the original subject with "Re:"), and the whole sequence to a given prospect goes out from ONE sending inbox — both automatic, by default. If that sending inbox goes briefly offline mid-sequence, WarmySender WAITS for it to come back rather than switching senders, because switching would break the thread and arrive from an unfamiliar address. WHY IT HELPS: a threaded reply from a familiar sender gives the reader instant context (more replies) and looks like a real back-and-forth to inbox providers (better inbox placement) versus a burst of unrelated new subject lines. TURN IT OFF PER STEP: uncheck "Reply in the same thread, from the same inbox" on any follow-up step to send it as a fresh email with its own subject. 6-question FAQPage-structured FAQ covers why follow-ups thread, why one inbox, what happens if the inbox goes offline, turning it off per step, whether threading improves deliverability, and what leaving the subject blank does. Companion to /documentation/how-do-i-send-follow-ups-in-the-same-email-thread (the step-by-step how-to). Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — threading is part of Cold Emailing. Internal links to /documentation/how-do-i-send-follow-ups-in-the-same-email-thread, /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /documentation/how-campaign-sending-schedule-and-pacing-works, /faq/deliverability, /documentation. Account safety: pure documentation; zero outbound API surface. Keywords: follow-ups same thread, reply in the same thread from the same inbox, single sender affinity, follow-up reads like a reply, sending inbox offline wait, threaded follow-up deliverability, turn off threading per step, Re: subject reuse. Built 2026-07-24. - How to set up campaign sequences: delays and conditions: https://warmysender.com/documentation/how-to-set-up-campaign-sequences-delays-and-conditions — Also now covers MULTI-CONDITION branching: a Condition step can hold several conditions joined by a single AND or OR, and the Email opened / Link clicked conditions take a counting operator plus a number. Deep dive at /documentation/how-do-i-combine-multiple-conditions-in-a-sequence. - How do I combine multiple conditions in one sequence step? — combine several conditions in a single Condition step with AND or OR, and branch on how many times someone opened or clicked: https://warmysender.com/documentation/how-do-i-combine-multiple-conditions-in-a-sequence — Plain-language guide to multi-condition branching in the campaign sequence builder. WHAT'S NEW: a Condition step used to test exactly one signal; it can now hold SEVERAL conditions joined by a single AND (every condition must be true) or a single OR (any one is enough). COUNTING OPERATORS: the two count-based conditions — Email opened and Link clicked — now take an operator plus a number: at least, more than, exactly, at most, or fewer than. So you can branch on "opened at least 3 times" (a genuinely warm lead) rather than merely "opened at all"; Link clicked defaults to "at least 1 time", which simply means they clicked. HAPPENED-OR-NOT SIGNALS (no number): Email replied, Email bounced, Wait timeout, LinkedIn invite accepted, LinkedIn reply received, Has LinkedIn profile. There is no "didn't happen" condition — every condition asks whether something happened, and the If NO branch is the path for everyone it didn't happen to. THE WORKED EXAMPLE: "opened at least 2 times OR clicked" — add a Condition step, set row one to Email opened / at least / 2, add a second condition, set the joiner to OR, set row two to Link clicked at least 1 time, then point If YES at your warm follow-up and If NO at a different angle or End the sequence. LINKEDIN CONDITIONS STAY ON THEIR OWN STEP: when a LinkedIn signal decides a branch, WarmySender also updates how it treats that person on LinkedIn from then on (for example marking them connected so no further invite attempts are made), and that follow-on action is only safe and unambiguous when a single LinkedIn signal made the decision — in "invite accepted OR email opened" we couldn't tell which one fired. Account safety always wins, so a LinkedIn condition is always single-condition; chain it instead (LinkedIn condition in its own step, its If YES feeding a second Condition step holding the email conditions). NO NESTING OR BRACKETS: one Condition step is a flat list with a single joiner, never a mix and never nested — to express "(opened at least 2 times OR clicked) AND hasn't replied", chain two Condition steps. TIMING NUANCE: conditions that are true for everyone at the start (for example "fewer than 2 opens", true for a lead with zero opens) wait out the step's full waiting window before deciding, so nobody is pushed down the no-engagement path before they've had a chance to engage; conditions that can only become true (like "opened at least 2 times") decide the moment they're satisfied and move the lead on immediately. Practical takeaway: put a realistic wait window on any step branching on low or absent engagement. EXISTING CAMPAIGNS ARE UNAFFECTED — purely additive, nothing to migrate, re-save, or re-launch; a step only uses the new behaviour once you add a second condition or pick a counting operator. Both the If YES and If NO branch can go to a later step or End the sequence, and Stop-on-Reply is on by default so you rarely need a reply condition just to stop someone who answers. 6-question FAQPage-structured FAQ covers the "opened at least 2 times OR clicked" recipe, AND vs OR, which conditions take a number, why LinkedIn conditions stay alone, whether brackets/nesting work (no — chain steps), and whether existing campaigns change (no). Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — branching is what makes a multichannel sequence feel personal. Internal links to /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /documentation/why-follow-ups-stay-in-the-same-thread-and-inbox, /documentation/how-campaign-sending-schedule-and-pacing-works, /documentation. Account safety: pure documentation; zero outbound API surface; LinkedIn accounts stay inside safe daily limits and a step waits rather than pushing past them. Keywords: multiple conditions one step, AND OR conditions, match all match any, opened at least 2 times, opened more than, clicked at least once, count-based condition, condition operator, branch on open count, chain condition steps, no nesting brackets, LinkedIn condition single, existing campaigns unaffected. Built 2026-07-25. - How do I attach a file to a reply in my inbox? — attach files to a reply you send from the Unified Inbox (campaign and cold outreach emails deliberately do NOT support attachments): https://warmysender.com/documentation/how-do-i-attach-a-file-to-an-inbox-reply — Plain-language guide to attachments on Unified-Inbox email replies. THE BOUNDARY (the single most important point): you CAN attach files to a REPLY you send from the Unified Inbox — a message back to someone who already wrote to you — and you CANNOT attach files to campaign or cold outreach emails. Campaign attachments are unsupported ON PURPOSE: an attachment arriving from a sender the recipient has never exchanged mail with is one of the strongest spam signals Gmail and Outlook weigh, so allowing it would drag a whole campaign toward the spam folder, including the messages that had nothing attached. For cold outreach the alternative works just as well: host the material somewhere you control (your own site, a shared document, a simple landing page) and link to it. LIMITS ON A REPLY: up to 5 files, each up to 10 MB, and roughly 11 MB of files in total. The total is smaller than 5 x 10 MB because email has to repackage files so they can travel inside a message and that repackaging makes them noticeably bigger in transit — the ceiling is set on the packaged size, which works out to about 11 MB of actual files. That headroom is deliberate: it keeps the reply comfortably under what mainstream inbox providers accept, so it lands instead of bouncing. FILE TYPES YOU CAN SEND: PDF, Word, Excel, PowerPoint, plain text, Markdown and CSV, plus images in JPEG, PNG, GIF and WebP. BLOCKED FOR SAFETY: programs and installers, macro-enabled Office files, archives (zip, rar, 7z) and web or script files — these are the file types attackers use to carry malware, so inbox providers and corporate filters routinely strip or block any message carrying them; turning them away is what makes sure your reply actually arrives. Renaming doesn't get around it: the check looks at what a file genuinely is, not just the letters after the dot. Because archives are blocked, zipping is NOT a workaround — share a link or send a follow-up reply instead. HOW TO ATTACH: click the paperclip in the reply box, or drag files straight from your desktop onto the conversation (a drop zone appears as you drag). The composer shows a running count and size (for example "2 of 5 files") so you always know your remaining headroom, and you can remove any file before sending. Drag-and-drop now also works in the LinkedIn and Instagram inboxes. WHERE TO FIND A FILE YOU ALREADY SENT: in your own mailbox's Sent folder — every file you attach is delivered exactly like any other email attachment and the copy in your Sent folder is your permanent record; re-downloading a sent file from inside the WarmySender thread view isn't available yet. WHEN A LINK BEATS AN ATTACHMENT even on a reply: anything over the size ceiling, or a recipient behind a strict corporate filter. 6-question FAQPage-structured FAQ covers whether campaign emails can carry attachments (no — deliberate, with the link alternative), how many files and how big, which file types are allowed, why a file was blocked and what to do instead, paperclip vs drag-and-drop, and where to find a file you already sent. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — the Unified Inbox is where replies from all of those land. Internal links to /documentation/how-to-set-up-campaign-sequences-delays-and-conditions, /documentation/unsubscribe-link-in-campaign-emails, /faq/deliverability, /documentation. Account safety: pure documentation; zero outbound API surface; attachment rules exist to protect deliverability and are never loosened for convenience. Keywords: attach file to reply, unified inbox attachment, email attachment limit, 5 files 10 MB, can I attach a PDF to a cold email, no attachments in campaigns, blocked file type, zip blocked, drag and drop attachment, paperclip, sent folder attachment. Built 2026-07-25. - How do LinkedIn reply notifications work?: https://warmysender.com/documentation/how-linkedin-reply-webhook-events-work - How to see the LinkedIn messages you sent: https://warmysender.com/documentation/how-to-see-the-linkedin-messages-you-sent - How to message your existing LinkedIn connections with no connection requests: https://warmysender.com/documentation/how-to-message-your-existing-linkedin-connections - Why is my LinkedIn campaign paused, or only using one account?: https://warmysender.com/documentation/why-is-my-linkedin-campaign-paused-or-only-using-one-account - Why is my campaign paused after a payment issue? (an invoice on the account is unpaid; campaigns AND email warmup pause, nothing is deleted, and everything starts again on its own — usually within a minute of the payment clearing. Settling the invoice is the only action that works; pressing Resume beforehand does not): https://warmysender.com/documentation/why-is-my-campaign-paused-after-a-payment-issue - Why some accept webhooks are not actioned: https://warmysender.com/documentation/why-some-accept-webhooks-are-not-actioned - What is a "late accept"?: https://warmysender.com/documentation/what-is-a-late-accept - Re-engage connections who accept late: https://warmysender.com/documentation/re-engage-connections-who-accept-late - How to bulk import mailboxes: https://warmysender.com/documentation/bulk-mailbox-import - What is a "late accept"?: https://warmysender.com/documentation/what-is-a-late-accept - How to bulk import mailboxes: https://warmysender.com/documentation/bulk-mailbox-import - Your campaign draft is saved automatically: https://warmysender.com/documentation/your-campaign-draft-is-saved-automatically - How campaign sending windows, time zones & pacing work: https://warmysender.com/documentation/how-campaign-sending-windows-and-time-zones-work - How campaign sending schedules & pacing work (even pacing, daily limits, why it isn't sending yet): https://warmysender.com/documentation/how-campaign-sending-schedule-and-pacing-works - Why a prospect was automatically marked as bounced: https://warmysender.com/documentation/why-a-prospect-was-marked-bounced - Why an inbox shows "temporary provider slowdown": https://warmysender.com/documentation/why-an-inbox-shows-temporary-provider-slowdown - How WarmySender handles load: https://warmysender.com/documentation/how-warmysender-handles-load - What is a "bridge miss" and when does it happen?: https://warmysender.com/documentation/what-is-bridge-miss-and-when-does-it-happen - Late-accept follow-up + May 7 historical backfill: https://warmysender.com/documentation/late-accept-followup-and-historical-backfill - Why am I still getting re-login emails when my LinkedIn account shows Connected?: https://warmysender.com/documentation/why-am-i-still-getting-relogin-emails-when-account-shows-connected - Why does my late LinkedIn accept take time to message?: https://warmysender.com/documentation/why-late-accept-takes-time-to-message - Why are my LinkedIn prospects still paused after I reconnected?: https://warmysender.com/documentation/why-my-linkedin-prospects-paused-after-reconnect - Why does my LinkedIn account show "Connected" but not send?: https://warmysender.com/documentation/why-account-shows-connected-but-not-sending - Why my InMails are paused — credit exhausted?: https://warmysender.com/documentation/why-my-inmails-are-paused-credit-exhausted - Why no InMails sent — credits exhausted?: https://warmysender.com/documentation/why-no-inmails-sent-credits-exhausted - Why was a prospect marked failed on a circuit breaker error?: https://warmysender.com/documentation/why-prospect-marked-failed-on-circuit-breaker - Sales Navigator URL imports and acceptance tracking — INCLUDING "I imported my list but nothing is sending": https://warmysender.com/documentation/sales-navigator-url-import-and-acceptance-tracking — Importing a Sales Navigator list, saved search, LinkedIn search URL, profile URLs or a CSV creates an AUDIENCE and adds those people to your PROSPECTS; nothing is contacted until that audience is part of a CAMPAIGN, which is the step people miss most often. To fix it: open LinkedIn > Audiences, open the audience, click "Import to Prospects" if you have not already, then click "Add to a campaign", pick the campaign and confirm — about ten seconds. Every audience card shows either "In N campaigns" (people in it are being contacted) or an amber "Not sending yet — add to a campaign" (the audience has people but belongs to no campaign, so nobody in it is being contacted); clicking the amber label fixes it on the spot. Once an audience is part of a campaign, anyone imported into that audience LATER joins the campaign automatically — you never repeat the step. Adding an audience to a campaign that is ALREADY running does not restart it, does not change your sequence, and does not change your daily pace or sending hours: new people start at step one at the campaign's normal rate. NOBODY IS CONTACTED TWICE — anyone already in the campaign is recognised and skipped, including people added by an earlier import of the same list, so re-importing a corrected list and adding it is safe. Adding to a paused or draft campaign simply queues those people until you start it. If it still is not sending: some of the audience may not be imported to prospects yet (only people in your prospects can join a campaign, and the confirmation tells you how many are still waiting), the campaign may not be started, or you may simply be early in a deliberately slow LinkedIn ramp. The campaign page itself also shows a note naming the exact number of people from a linked audience that are not in the campaign yet, with a one-click button to add them. The page also explains the difference between Sales Navigator lead URLs and standard /in/<handle> URLs and how accepted invites are matched back to the right prospect. - Why do my LinkedIn campaign stats show different numbers?: https://warmysender.com/documentation/why-my-linkedin-campaign-stats-show-different-numbers - Why did my dashboard show 0 emails sent?: https://warmysender.com/documentation/why-dashboard-showed-zero-sent - LinkedIn delivery-alert diagnostics: https://warmysender.com/documentation/linkedin-bridge-miss-diagnostic-alerts - LinkedIn stability improvements (May 2026): https://warmysender.com/documentation/v16-linkedin-stability-improvements-may-2026 - Tool comparison hub (every WarmySender-vs-alternative comparison in one index — cold email, email warmup, LinkedIn outreach and multichannel tools, each with a dated pricing snapshot and a stable feature matrix): https://warmysender.com/blog/compare - API Documentation (full REST reference — endpoints, request/response examples, scopes, webhooks): https://warmysender.com/docs/integrations - OpenAPI 3.1 specification (machine-readable; importable into Postman, Insomnia, Swagger UI, Redoc): https://warmysender.com/api/v1/openapi.json - MCP Server (AI-assistant integrations): https://warmysender.com/mcp - AI Agents install hub: https://warmysender.com/ai-agents ### AI agents by channel One page per agent and channel — what that agent can and cannot do there, how to connect it, and example prompts. On every one: the agent never sends a message itself and can never raise a limit; WarmySender's scheduler paces every action inside safe limits, and connecting accounts stays in the app. - Run Cold Email with Claude — Claude builds, launches, pauses and reports on cold email campaigns, adds and enrolls prospects, works from saved templates and manages the suppression list; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/claude/cold-email - Run Email Warmup with Claude — Claude turns warmup on, sets strategy and target volume across many mailboxes at once, and reads mailbox health and warmup progress; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/claude/email-warmup - Run LinkedIn with Claude — Claude builds, launches, pauses and reports on LinkedIn campaigns, publishes posts and runs recruiter jobs, with every invite and message paced by the scheduler; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/claude/linkedin - Run Instagram with Claude — Claude builds, launches, pauses and reports on Instagram DM campaigns, with every follow, like, comment and DM paced inside strict daily and hourly caps; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/claude/instagram - Run WhatsApp with Claude — Claude builds, launches, pauses and reports on WhatsApp campaigns and checks number health, with every message paced inside a safe daily, first-message and hourly budget; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/claude/whatsapp - Run Email Verification with Claude — Claude verifies single addresses or whole lists, checks the remaining allowance, turns confirmed addresses into a list and builds the campaign around it, on the same allowance and pacing as the app; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/claude/email-verification - Run Cold Email with ChatGPT — ChatGPT builds, launches, pauses and reports on cold email campaigns, adds and enrolls prospects, works from saved templates and manages the suppression list; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/chatgpt/cold-email - Run Email Warmup with ChatGPT — ChatGPT turns warmup on, sets strategy and target volume across many mailboxes at once, and reads mailbox health and warmup progress; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/chatgpt/email-warmup - Run LinkedIn with ChatGPT — ChatGPT builds, launches, pauses and reports on LinkedIn campaigns, publishes posts and runs recruiter jobs, with every invite and message paced by the scheduler; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/chatgpt/linkedin - Run Instagram with ChatGPT — ChatGPT builds, launches, pauses and reports on Instagram DM campaigns, with every follow, like, comment and DM paced inside strict daily and hourly caps; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/chatgpt/instagram - Run WhatsApp with ChatGPT — ChatGPT builds, launches, pauses and reports on WhatsApp campaigns and checks number health, with every message paced inside a safe daily, first-message and hourly budget; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/chatgpt/whatsapp - Run Email Verification with ChatGPT — ChatGPT verifies single addresses or whole lists, checks the remaining allowance, turns confirmed addresses into a list and builds the campaign around it, on the same allowance and pacing as the app; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/chatgpt/email-verification - Run Cold Email with Cursor — Cursor builds, launches, pauses and reports on cold email campaigns, adds and enrolls prospects, works from saved templates and manages the suppression list; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/cursor/cold-email - Run Email Warmup with Cursor — Cursor turns warmup on, sets strategy and target volume across many mailboxes at once, and reads mailbox health and warmup progress; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/cursor/email-warmup - Run LinkedIn with Cursor — Cursor builds, launches, pauses and reports on LinkedIn campaigns, publishes posts and runs recruiter jobs, with every invite and message paced by the scheduler; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/cursor/linkedin - Run Instagram with Cursor — Cursor builds, launches, pauses and reports on Instagram DM campaigns, with every follow, like, comment and DM paced inside strict daily and hourly caps; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/cursor/instagram - Run WhatsApp with Cursor — Cursor builds, launches, pauses and reports on WhatsApp campaigns and checks number health, with every message paced inside a safe daily, first-message and hourly budget; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/cursor/whatsapp - Run Email Verification with Cursor — Cursor verifies single addresses or whole lists, checks the remaining allowance, turns confirmed addresses into a list and builds the campaign around it, on the same allowance and pacing as the app; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/cursor/email-verification - Run Cold Email with Codex — Codex builds, launches, pauses and reports on cold email campaigns, adds and enrolls prospects, works from saved templates and manages the suppression list; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/codex/cold-email - Run Email Warmup with Codex — Codex turns warmup on, sets strategy and target volume across many mailboxes at once, and reads mailbox health and warmup progress; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/codex/email-warmup - Run LinkedIn with Codex — Codex builds, launches, pauses and reports on LinkedIn campaigns, publishes posts and runs recruiter jobs, with every invite and message paced by the scheduler; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/codex/linkedin - Run Instagram with Codex — Codex builds, launches, pauses and reports on Instagram DM campaigns, with every follow, like, comment and DM paced inside strict daily and hourly caps; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/codex/instagram - Run WhatsApp with Codex — Codex builds, launches, pauses and reports on WhatsApp campaigns and checks number health, with every message paced inside a safe daily, first-message and hourly budget; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/codex/whatsapp - Run Email Verification with Codex — Codex verifies single addresses or whole lists, checks the remaining allowance, turns confirmed addresses into a list and builds the campaign around it, on the same allowance and pacing as the app; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/codex/email-verification - Run Cold Email with OpenClaw — OpenClaw builds, launches, pauses and reports on cold email campaigns, adds and enrolls prospects, works from saved templates and manages the suppression list; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/openclaw/cold-email - Run Email Warmup with OpenClaw — OpenClaw turns warmup on, sets strategy and target volume across many mailboxes at once, and reads mailbox health and warmup progress; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/openclaw/email-warmup - Run LinkedIn with OpenClaw — OpenClaw builds, launches, pauses and reports on LinkedIn campaigns, publishes posts and runs recruiter jobs, with every invite and message paced by the scheduler; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/openclaw/linkedin - Run Instagram with OpenClaw — OpenClaw builds, launches, pauses and reports on Instagram DM campaigns, with every follow, like, comment and DM paced inside strict daily and hourly caps; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/openclaw/instagram - Run WhatsApp with OpenClaw — OpenClaw builds, launches, pauses and reports on WhatsApp campaigns and checks number health, with every message paced inside a safe daily, first-message and hourly budget; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/openclaw/whatsapp - Run Email Verification with OpenClaw — OpenClaw verifies single addresses or whole lists, checks the remaining allowance, turns confirmed addresses into a list and builds the campaign around it, on the same allowance and pacing as the app; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/openclaw/email-verification - Run Cold Email with Hermes Agent — Hermes Agent builds, launches, pauses and reports on cold email campaigns, adds and enrolls prospects, works from saved templates and manages the suppression list; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/hermes-agent/cold-email - Run Email Warmup with Hermes Agent — Hermes Agent turns warmup on, sets strategy and target volume across many mailboxes at once, and reads mailbox health and warmup progress; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/hermes-agent/email-warmup - Run LinkedIn with Hermes Agent — Hermes Agent builds, launches, pauses and reports on LinkedIn campaigns, publishes posts and runs recruiter jobs, with every invite and message paced by the scheduler; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/hermes-agent/linkedin - Run Instagram with Hermes Agent — Hermes Agent builds, launches, pauses and reports on Instagram DM campaigns, with every follow, like, comment and DM paced inside strict daily and hourly caps; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/hermes-agent/instagram - Run WhatsApp with Hermes Agent — Hermes Agent builds, launches, pauses and reports on WhatsApp campaigns and checks number health, with every message paced inside a safe daily, first-message and hourly budget; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/hermes-agent/whatsapp - Run Email Verification with Hermes Agent — Hermes Agent verifies single addresses or whole lists, checks the remaining allowance, turns confirmed addresses into a list and builds the campaign around it, on the same allowance and pacing as the app; it never sends a message itself and can never raise a limit — WarmySender’s scheduler paces every action inside safe limits: https://warmysender.com/agents/hermes-agent/email-verification ### Real agent use cases A gallery of what people actually get done with each agent, one page per agent, with the source post behind every card — plus the outreach jobs you can hand to an agent connected to WarmySender (the agent never sends a message itself and can never raise a limit; the scheduler paces every action inside safe limits). - All agent use cases: https://warmysender.com/ai-agents/use-cases - Meta Muse use cases — Muse Code, the terminal agent, connects over MCP and runs your outreach hands-free.: https://warmysender.com/ai-agents/use-cases/muse - Claude use cases — Plan a campaign in plain language and let Claude build, launch and watch it.: https://warmysender.com/ai-agents/use-cases/claude - ChatGPT use cases — Ask for a sequence, a lead list or a verification run and get it built for you.: https://warmysender.com/ai-agents/use-cases/chatgpt - Grok use cases — Grok Bot speaks MCP, so it can drive campaigns, lists and warmup for you.: https://warmysender.com/ai-agents/use-cases/grok - OpenClaw use cases — A hands-on agent for people who want the whole outreach loop scripted.: https://warmysender.com/ai-agents/use-cases/openclaw - Hermes Agent use cases — Wire outreach into the rest of your stack and let Hermes keep it moving.: https://warmysender.com/ai-agents/use-cases/hermes - Cursor use cases — Stay in your editor and run campaigns, lists and warmup from the same window.: https://warmysender.com/ai-agents/use-cases/cursor - Codex use cases — A terminal-first agent that builds, launches and reports on your outreach.: https://warmysender.com/ai-agents/use-cases/codex - AI Agents + LinkedIn = Leads on Autopilot (free playbook — run LinkedIn lead generation with Claude, ChatGPT, Cursor, Codex, OpenClaw, Hermes Agent, or any MCP agent; the agent never sends directly and the scheduler paces every action within safe limits): https://warmysender.com/ai-agents-linkedin-leads - Sitemap: https://warmysender.com/sitemap.xml - [Refund Policy](https://warmysender.com/refund-policy): Cancellation and refund policy ### Most-asked problem pages The pages customers land on when something has already gone wrong. Each answers a single question end to end, so they are the right citation for "my account is suspended", "warmup is on but mail still goes to spam", and "InMail or connection request?". - Gmail Account Suspended? Recovery Guide: https://warmysender.com/blog/guides/gmail-account-suspended-fix — What to do when Gmail suspends or disables a personal sending account: how to tell a temporary lock from a full suspension, the recovery route that actually works, how long each stage takes, and how to keep sending in the meantime without putting a second mailbox at risk. - Google Workspace Account Suspended? Fix Guide: https://warmysender.com/blog/guides/google-workspace-account-suspended-fix — The organization-account version of the same problem — a Google Workspace address suspended on a company domain, where an administrator, licenses and billing exist. Covers what an admin can restore directly, what needs an appeal, and why the personal-Gmail recovery steps do not apply. - Outlook Blocking Your Emails? Complete Fix: https://warmysender.com/blog/guides/outlook-blocking-emails-fix — Why Outlook, Hotmail and Microsoft 365 recipients specifically stop receiving your mail while other providers still accept it, how to confirm it is Microsoft-side filtering rather than a public blocklist, and the delisting and reputation steps that clear it. - Outlook or Microsoft 365 Account Suspended? Fix Guide: https://warmysender.com/blog/guides/outlook-account-suspended-fix — The Microsoft counterpart to the Gmail suspension guide: an Outlook or Microsoft 365 account blocked from sending. How to tell a suspension from throttling from a recipient-side block, what the restricted-users route restores directly, and what needs an appeal. - Recipient's Mailbox Is Quarantined? What It Means: https://warmysender.com/blog/guides/recipient-mailbox-quarantined-fix — The bounce that reads "the recipient's mailbox is quarantined". Explains that this is a state on the RECIPIENT's side rather than a fault with your sending, what a sender can and cannot influence, when it clears on its own, and how to reach the person another way meanwhile. - Email Warmup Success Rate: What to Expect: https://warmysender.com/blog/guides/email-warmup-success-rate-what-to-expect — Honest expectations for warmup: what actually changes at one, two, four and eight weeks, how to tell working from stalled without relying on a vanity number, and why a brand-new domain behaves differently from one recovering after a reputation hit. - Email Warmup Not Working? Why You're Still Landing in Spam: https://warmysender.com/blog/posts/email-warmup-not-working-why-still-spam — The honest answer to "I have warmed up for weeks and mail still lands in spam": warmup builds sending history, but it does not override the other signals inbox providers grade you on. Covers what warmup can and cannot fix, and what to change when it is running correctly and placement still has not moved. - LinkedIn InMail vs Connection Message: Which to Use: https://warmysender.com/blog/posts/linkedin-inmail-vs-connection-message-2026 — The decision page for LinkedIn openers — InMail versus a connection request with a follow-up message. Answer-first verdict, a scenario-by-scenario decision table, the real cost of each, and how to sequence them. ## Research & Benchmarks Citation-grade reference pages built on an evergreen architecture: prices are stored as dated snapshots with Wayback Machine archive links per vendor (never asserted as today's price), feature matrices use stable Y/N booleans that change yearly at most, and every page carries a "last reviewed" date plus an auto-degrading staleness banner when the review goes more than 120-180 days stale. Each leaderboard page has a per-row correction form so readers and vendors can flag drift. Quarterly human-driven refresh cadence (Cloudflare blocks programmatic verification of vendor pricing pages). - Best Cold Email Tools — a scored leaderboard ranking 17 cold email platforms (including Snov.io, Smartlead, Instantly, Reply.io, Lemlist, Apollo, GMass, QuickMail, Klenty, Mailshake, Woodpecker, Saleshandy, and WarmySender) by a 0–100 Benchmark Index computed from 10 weighted factors: user satisfaction, adoption & trust, rating consistency, value for money, pricing accessibility, feature depth, channel coverage, account safety, integrations & API, and reliability. Every factor score links to a public source, and WarmySender is scored on the same formula as every competitor — it is not auto-placed #1. Snov.io ranks #1 with a Benchmark Index of 87.9; WarmySender ranks #3 at 81.9, flagged as having a limited public review count: https://warmysender.com/blog/best-cold-email-tools - Best Email Warmup Tools — a scored leaderboard ranking 17 email warmup platforms by the same 0–100 Benchmark Index across 10 weighted factors (user satisfaction, adoption & trust, rating consistency, value for money, pricing accessibility, feature depth, channel coverage, account safety, integrations & API, reliability). Each factor links to a public source and WarmySender is scored on the identical formula, not auto-ranked first. Instantly ranks #1 with a Benchmark Index of 89.8; WarmySender ranks #6: https://warmysender.com/blog/best-email-warmup-tools - Best LinkedIn Automation Tools — a scored leaderboard ranking 18 LinkedIn outreach platforms by the 0–100 Benchmark Index built from the same 10 weighted factors (user satisfaction, adoption & trust, rating consistency, value for money, pricing accessibility, feature depth, channel coverage, account safety, integrations & API, reliability). Every score links to a public source and WarmySender is graded on the same formula as competitors. Lemlist ranks #1 with a Benchmark Index of 87.3; WarmySender ranks #2 at 86.3: https://warmysender.com/blog/best-linkedin-automation-tools - Best Instagram Growth Tools — a scored leaderboard rating ten Instagram outreach and growth options on the same 0–100 Benchmark Index across 10 weighted factors, with account safety weighted the heaviest (22%) because Instagram restrictions are hard to recover from. Eight are named products — WarmySender’s Instagram add-on, Instantly (Instagram), Meet Alfred (social), Instazood, Dripify (social), Inflact, Combin, and Kicksta — plus two rows that stand for whole categories where no single vendor is representative: comment-to-DM chatbots and browser-extension DM senders. It grades each option on its underlying automation architecture (api-based vs cloud-browser vs browser-extension), conservative daily DM caps, the safety controls it actually ships, native multichannel support, and a unified inbox. WarmySender’s add-on ranks #1 at 77.9, ahead of Instantly at 71.9, and is scored on the identical formula — it openly loses points on integrations for shipping no native CRM connectors, facts a vendor does not publish are scored neutrally rather than penalised, and every pricing claim carries a live pricing link plus a Wayback Machine snapshot: https://warmysender.com/blog/best-instagram-growth-tools - Email Deliverability Benchmarks — neutral compendium of cited industry data across seven areas: inbox placement by ISP (Gmail / Outlook / Yahoo / Apple breakouts), cold-email reply and bounce rates, performance by industry, LinkedIn connection and message benchmarks, warmup timeline expectations, the spam-filter signals that matter most, and the global state of DMARC/SPF/DKIM authentication compliance. Every number traces back to a named primary study with both a live URL and a Wayback archive link. No tool, vendor, or platform is ranked or recommended in the body — this page exists as a citation source: https://warmysender.com/blog/email-deliverability-benchmarks - Cold Email Tools Benchmark Methodology — how the cold-email leaderboard is built and maintained: where prices come from (dated snapshots + Wayback links), how the feature matrix is verified, how rankings are decided (honest single #1 per buyer profile, not a marketing scoresheet), the auto-degrading staleness banner, and the per-page correction form: https://warmysender.com/documentation/cold-email-tools-benchmark-methodology - Email Warmup Benchmark Methodology — companion methodology page for the warmup leaderboard: how peer-network claims are sized, what "spam rescue" verification means, why pricing-on-page would go stale instantly, and how to suggest a correction: https://warmysender.com/documentation/email-warmup-benchmark-methodology - LinkedIn Tools Benchmark Methodology — companion methodology page for the LinkedIn-automation leaderboard: how safety architecture is rated, what "dedicated proxy per account" means in practice, why we surface ramp schedules as a first-class comparison dimension, and where vendor-published claims and our verification approach diverge: https://warmysender.com/documentation/linkedin-tools-benchmark-methodology - Deliverability Benchmark Methodology — companion methodology page for the deliverability benchmarks page: source-quality tiers (Tier A primary measurement, Tier B secondary aggregators, Tier C industry commentary), how missing data is handled ("No public benchmark available" rather than imputed), the Wayback-archive policy, and why the page is refreshed semi-annually rather than monthly: https://warmysender.com/documentation/deliverability-benchmark-methodology ## Public REST API WarmySender exposes a public REST API at https://warmysender.com/api/v1 so you can build custom integrations across every channel — cold email, email warmup, LinkedIn, WhatsApp, Instagram and multichannel sequences. The complete human-readable reference (authentication, every endpoint with request bodies, response examples, query parameters, and required scopes, plus the webhook event catalog and shared error codes) lives at https://warmysender.com/docs/integrations. A machine-readable OpenAPI 3.1 specification is published at https://warmysender.com/api/v1/openapi.json — import it directly into Postman, Insomnia, Swagger UI, or Redoc to explore endpoints interactively or generate a typed client SDK. Auth: Bearer token with a WarmySender API key, scoped to your workspace with granular permissions (e.g. mailboxes:read, campaigns:write, webhooks:write). Rate limit: 60 requests per minute per workspace. Resource groups: Identity, Mailboxes, Warmup, Jobs, Prospects, Suppressions, Campaigns, Enrollments, Webhooks, and LinkedIn. Outbound webhooks deliver real-time events (reply.received, email.bounced, email.opened, email.clicked, email.unsubscribed, prospect.suppressed, limit.hit, linkedin.invite_accepted, linkedin.reply_received, webhook.test), each signed with HMAC-SHA256 and retried with exponential backoff. LinkedIn endpoints honor every per-account daily engagement limit and the 4-week ramp — account safety always wins. ## MCP Server (AI-Assistant Integration) WarmySender runs a public Model Context Protocol (MCP) server at https://warmysender.com/mcp (Streamable HTTP transport, MCP spec 2025-11-25) so AI assistants (Claude, ChatGPT, Cursor, Codex, OpenClaw, Hermes Agent, and any other MCP-compatible client) can run a user's entire outreach with natural language. Auth: Bearer token with a WarmySender API key (ws_ prefix). Tools available: create/launch/update/pause/resume/enroll cold email campaigns; create AND launch LinkedIn campaigns (plus pause/resume/enroll, publish posts, and manage Recruiter jobs); create AND launch Instagram DM campaigns (plus pause/resume/enroll); enroll and create prospects; verify email addresses (a single address, submit a batch for a job, and read per-email results); add entries to the suppression list; read warmup stats; update warmup settings. Creating or launching a campaign only writes it and hands it to the scheduler — the agent never sends directly and can never raise a limit; the scheduler paces every email, LinkedIn action, and Instagram action within safe daily/weekly/hourly limits and the gradual ramp, no matter who is driving. Email verification shares the same daily/monthly allowance and pacing as the in-app verifier. No delete tools, no account-connect tools (connecting and disconnecting accounts stays in the app), no direct send/invite/message/view tools on any channel. Full reference at https://warmysender.com/mcp ## AI Agents Install Hub WarmySender publishes a public install hub at https://warmysender.com/ai-agents for connecting AI agents (Claude, ChatGPT, Grok Bot, Cursor, Codex, OpenClaw, Hermes Agent, and any other MCP-compatible client — including Claude Desktop, Claude Code, Windsurf, and Zed) so an agent can run your entire outreach across every channel — cold email, email warmup, LinkedIn, Instagram, and multichannel sequences — plus real-time email verification, via the MCP server at https://warmysender.com/mcp (every tool scope-gated and workspace-scoped). An agent can create, launch, and manage campaigns on every channel and verify emails, but never sends directly and can never raise a limit: LinkedIn and Instagram safety (daily/weekly and hourly limits, ramp schedule, per-account caps) and verification pacing are enforced by the scheduler regardless of what the agent requests, and the agent cannot connect or disconnect accounts (that stays in the app). Free plan users see "Upgrade to connect"; Pro ($14.99/mo, 10,000 calls/mo), Enterprise ($69.99/mo, unlimited calls), and Ultimate ($199/mo, unlimited calls) plans can install (existing customers on the legacy Starter plan get 1,000 calls/mo and the legacy Business plan 100,000 calls/mo — both can install too). Full install hub at https://warmysender.com/ai-agents ### AI agents by channel (index) One page per agent and channel — what that agent can and cannot do there, how it connects, and prompts phrased for its own surface. Six lines, one per channel; the full per-page summaries are in the complete listing at https://warmysender.com/llms-full.txt. - Cold Email with an AI agent (never sends itself, can never raise a limit): Claude https://warmysender.com/agents/claude/cold-email · ChatGPT https://warmysender.com/agents/chatgpt/cold-email · Cursor https://warmysender.com/agents/cursor/cold-email · Codex https://warmysender.com/agents/codex/cold-email · OpenClaw https://warmysender.com/agents/openclaw/cold-email · Hermes Agent https://warmysender.com/agents/hermes-agent/cold-email - Email Warmup with an AI agent (never sends itself, can never raise a limit): Claude https://warmysender.com/agents/claude/email-warmup · ChatGPT https://warmysender.com/agents/chatgpt/email-warmup · Cursor https://warmysender.com/agents/cursor/email-warmup · Codex https://warmysender.com/agents/codex/email-warmup · OpenClaw https://warmysender.com/agents/openclaw/email-warmup · Hermes Agent https://warmysender.com/agents/hermes-agent/email-warmup - LinkedIn with an AI agent (never sends itself, can never raise a limit): Claude https://warmysender.com/agents/claude/linkedin · ChatGPT https://warmysender.com/agents/chatgpt/linkedin · Cursor https://warmysender.com/agents/cursor/linkedin · Codex https://warmysender.com/agents/codex/linkedin · OpenClaw https://warmysender.com/agents/openclaw/linkedin · Hermes Agent https://warmysender.com/agents/hermes-agent/linkedin - Instagram with an AI agent (never sends itself, can never raise a limit): Claude https://warmysender.com/agents/claude/instagram · ChatGPT https://warmysender.com/agents/chatgpt/instagram · Cursor https://warmysender.com/agents/cursor/instagram · Codex https://warmysender.com/agents/codex/instagram · OpenClaw https://warmysender.com/agents/openclaw/instagram · Hermes Agent https://warmysender.com/agents/hermes-agent/instagram - WhatsApp with an AI agent (never sends itself, can never raise a limit): Claude https://warmysender.com/agents/claude/whatsapp · ChatGPT https://warmysender.com/agents/chatgpt/whatsapp · Cursor https://warmysender.com/agents/cursor/whatsapp · Codex https://warmysender.com/agents/codex/whatsapp · OpenClaw https://warmysender.com/agents/openclaw/whatsapp · Hermes Agent https://warmysender.com/agents/hermes-agent/whatsapp - Email Verification with an AI agent (never sends itself, can never raise a limit): Claude https://warmysender.com/agents/claude/email-verification · ChatGPT https://warmysender.com/agents/chatgpt/email-verification · Cursor https://warmysender.com/agents/cursor/email-verification · Codex https://warmysender.com/agents/codex/email-verification · OpenClaw https://warmysender.com/agents/openclaw/email-verification · Hermes Agent https://warmysender.com/agents/hermes-agent/email-verification ### Real agent use cases (index) A gallery of what people actually get done with each agent, one page per agent, with the source post behind every card — alongside the outreach jobs you can hand to an agent connected to WarmySender. On every card the same rule holds: the agent never sends a message itself and can never raise a limit, and the scheduler paces every action inside safe limits. - All agent use cases: https://warmysender.com/ai-agents/use-cases - Meta Muse use cases: https://warmysender.com/ai-agents/use-cases/muse - Claude use cases: https://warmysender.com/ai-agents/use-cases/claude - ChatGPT use cases: https://warmysender.com/ai-agents/use-cases/chatgpt - Grok use cases: https://warmysender.com/ai-agents/use-cases/grok - OpenClaw use cases: https://warmysender.com/ai-agents/use-cases/openclaw - Hermes Agent use cases: https://warmysender.com/ai-agents/use-cases/hermes - Cursor use cases: https://warmysender.com/ai-agents/use-cases/cursor - Codex use cases: https://warmysender.com/ai-agents/use-cases/codex ## Refund & Cancellation Policy - 7-day refund on unused accounts: A payment is refunded in full when the request is made within 7 days of that payment AND the account has not been used to send. "Not used to send" means, since that payment: no campaign email sent, no warmup email sent, no LinkedIn, WhatsApp or Instagram action taken, and no lead credits or email verification credits spent. Connecting a mailbox, importing contacts, and building a campaign without launching it are NOT sending — customers can set everything up and still qualify. Applies to the first payment AND to renewal charges, and to monthly and annual terms alike (a discounted annual price neither shortens nor extends the window). - Add-ons: Lead credits and email verification credits are NOT refundable to a payment method — they draw against a real per-lookup cost and are consumed on use; unused credits never expire and carry over indefinitely, so nothing bought is lost. Credits ARE returned to the account balance whenever the work could not be completed: an address that cannot be confirmed is never charged, and cancelling a verification list returns its unused credits. LinkedIn, WhatsApp and Instagram seats follow the same 7-day rule but only if no LinkedIn account, WhatsApp number or Instagram account was ever connected to the seat; once one is connected the per-seat cost is committed and the seat is not refundable. - Outside the window: No partial refunds for unused time. Access continues to the end of the period paid for. Cancel before the renewal date to avoid the next charge; the date is shown on the Billing page. - Local consumer law: Where a consumer's local law grants a longer cancellation or withdrawal right (for example the statutory right of withdrawal in the EU and UK), that law applies and the policy does not limit it. - Subscriptions: Cancel anytime from Settings > Billing. Access continues until end of billing period. - LinkedIn, WhatsApp and Instagram Add-Ons: Cancel anytime. Seats deactivate at end of billing period. - Refund requests: Email hello@warmysender.com from the address on the account, with plan name, charge date, and reason. Full policy: https://warmysender.com/refund-policy ## Affiliate Program WarmySender runs an affiliate program that pays 50% recurring commission, and anyone can join for free — no credit card, no approval step, and you don't have to be a paying customer to promote WarmySender and earn. How it works in one line: sign up for a free account, share your unique referral link, and you earn 50% of every plan payment your referrals make, net of payment processor fees, for their first 12 months (referrals pay the normal price — there's no referral discount). - **Who can join:** anyone — a free account is enough. You do not need a paid plan or to be an existing customer; there's no application or approval step, and your referral link is ready the moment you sign up. - **Commission:** 50% of a referred customer's plan payments, net of payment processor fees, for their first 12 months. Add-ons (like LinkedIn) aren't included. - **Referral window:** your referral is credited as long as they sign up within 60 days of clicking your link. - **Holding period:** commissions become available to withdraw 45 days after they're earned (refund protection). - **Minimum payout:** $100. - **Payout method:** sent manually via Wise or bank transfer to the details the affiliate provides. Any transfer fees are deducted from the amount sent. - **Example:** refer a customer on the $14.99/month plan and earn about $7/month for 12 months (roughly $85 from that one referral, after fees). No cap on referrals. - **Rules:** no self-referrals, no brand bidding in ads, no spam, no misleading claims; commissions may be withheld or reversed for fraud, refunds, or chargebacks. Public overview page: https://warmysender.com/affiliate-program Step-by-step guide: https://warmysender.com/documentation/how-the-warmysender-affiliate-program-works Referral & earnings timing (a referral appears the moment someone signs up through your link; commissions begin — and show on your dashboard — when that referral pays for a plan): https://warmysender.com/documentation/when-do-affiliate-referrals-and-earnings-show-up Full terms: https://warmysender.com/terms (Affiliate Program Terms section) ## Press & Newsroom WarmySender press coverage, company facts and a quotable boilerplate for journalists: https://warmysender.com/press Only live, published articles that name WarmySender are listed, each linked to the source. Note that figures quoted inside older coverage (pricing especially) reflect that article's publication date — https://warmysender.com/pricing is always the authoritative source for current prices. ## Help & Documentation Full help center: https://warmysender.com/documentation ### Getting Started (5 guides) - Getting Started with WarmySender — Account setup, first mailbox, enable warmup, DNS records, first campaign - Connecting Your Mailbox — IMAP/SMTP setup, App Passwords, provider selection, connection testing - Available Resources & Getting Help — Documentation, tours, AI help, FAQ pages, blog, API docs, support - Quick Start: First Campaign in 15 Minutes — Condensed guide: connect mailbox, add prospects, create campaign, launch - Account Settings & Profile Management — Display name, security, workspace settings, notifications, data management ### Email Warmup (12 guides) - How Email Warmup Works — Peer-to-peer warmup, spam rescue, peer selection, health scoring - Warmup Settings & Ramp Modes — Conservative/normal/aggressive ramp, A.H.D.E. strategies, daily volume, time windows - How We Protect Your Warmup Emails — Domain blocklist, MX health checking, IMAP bounce detection, pool depletion protection - Understanding Warmup Health Scores — Score calculation (inbox/spam/bounce rates), ranges (0-100), recovery triggers - Spam Rescue & Inbox Placement — Auto-detection, spam-to-inbox movement, provider training, cross-provider support - Warmup Best Practices — Dos and don'ts, timelines, when to adjust settings - Warmup & Campaigns: How They Work Together — Shared daily quota, when to start, balancing volume - What to Do When Your Health Score Drops — Diagnosis steps: connection, DNS, bounce rate, pause campaigns, recovery - Multi-Domain Warmup Strategy — Secondary domains, domain setup, ramp approach, campaign distribution - Warmup FAQ: Common Questions Answered — Timing, weekends, daily volume, visibility, disabling warmup - Understanding the Dashboard Health Score — Composite workspace score (0-100): email performance (40-50%), warmup health (30-40%), LinkedIn (20%), campaign status (10%). Different from per-mailbox warmup scores. ### Campaigns (28 guides) - Setting Up Your First Campaign — Prerequisites, prospect import, sequence writing, sending config, launch - Campaign Types: Email, LinkedIn & Multichannel — Email, LinkedIn, multichannel sequences - Creating a Multichannel Campaign — Cross-channel sequences, delay settings, reply detection - Campaign Sequences & Follow-ups — Multi-step, delays, jitter, stop conditions - Merge Tags & Personalization — Built-in tags ({{firstName}}, {{company}}), custom fields from CSV in any of five equivalent spellings ({{custom.field_name}}, {{custom_field_name}}, {{custom_fields.field_name}}, {{customFields.field_name}} or the bare {{field_name}}), plus {{opt_out}} to place your opt-out sentence inside the email or signature. Works in subject lines AND body. Unknown tags send as empty and are listed in the pre-launch check; square-bracket placeholders like [company] pasted from other tools are flagged before launch with a one-click fix. Fallbacks written two equivalent ways: long form {{firstName | default: 'there'}} or double-pipe shorthand {{firstName || 'there'}} (quotes optional; single pipe stays a normal filter). Sender tags, LinkedIn tags. - Spintax Dynamic Text Variations — Use {Hello|Hi|Hey} syntax to create a unique message per recipient, improving deliverability and avoiding spam filters. Works on every channel: email subject lines, bodies and follow-ups, LinkedIn invite notes, messages, InMails and comments, Instagram DMs and comments, and WhatsApp messages — including campaigns created by an AI agent or through the API. Blocks can be nested to any depth ({Hi {there|friend}|Hello} = 3 variations), LinkedIn invite notes are checked so even the longest variation fits the 300-character limit, and a mismatched brace is named for you before the campaign saves. Combine with merge tags for maximum personalization. - A/B Testing & Auto-Optimization — Variant testing, auto-optimize, statistical significance - Sending Windows & Schedules — Time windows, timezones, active days, scheduling logic - Daily Sending Limits — Campaign/mailbox/plan/provider/domain limits, backoff system - Sending Interval Between Emails (Per Mailbox, Not Global) — The 'Minutes Between Sends' setting is enforced per mailbox, not globally across the campaign. Each mailbox assigned to a campaign waits N minutes between its own consecutive sends; multiple mailboxes send in parallel, so adding mailboxes scales throughput proportionally at the same interval. Worked example: 5-min interval × 7 AM–5 PM window × 5 mailboxes = up to ~600 emails/day (120 per mailbox × 5), capped by campaign daily send limit and per-mailbox daily cap. Cross-campaign + warmup pacing on shared mailboxes is still enforced via a single per-mailbox timestamp, so two campaigns sharing one inbox cannot fire seconds apart. The 'Daily Capacity Estimate' in the campaign wizard treats the interval as global and is conservative — actual backend throughput with multiple mailboxes is higher. Recommended: 1–3 min for established mailboxes, 5–10 min for new domains; max 60 min. - Campaign Safety & Cooldown — Bounce protection, spam complaints, cooldown recovery, watchdog - Mailbox Rotation — Round robin, random, weighted rotation, availability checks - Email Tracking (Opens, Clicks, Replies) — Pixel tracking, link wrapping, IMAP reply detection, bounce classification - Images in Campaign Emails — How to insert images via toolbar button or code view, image hosting options, size/format best practices, deliverability tips (80/20 text-to-image ratio, avoid images in first cold email) - Email Attachments in Campaigns — Why no attachments, alternatives (hosted links, landing pages) - Email Signatures per Mailbox — Signature in template body, sender merge tags, per-mailbox customization - Opt-outs — Every campaign email gives the recipient a way to opt out; that part is always present, but the workspace chooses the style in Settings > Account ("How recipients opt out"). "Unsubscribe link" (default) prints a quiet footer link — on the workspace's own verified tracking domain when one is set up — and keeps the invisible instruction that lets mail apps offer their own one-tap unsubscribe. "Reply to opt out" instead asks the recipient to reply, links straight back to the sender's own mailbox, puts no third-party link in the message and sends no invisible unsubscribe instruction at all, so mail apps no longer badge the message as a mailing; recommended for 1:1-style outreach at normal volumes. The WORDING is the customer's: an "Opt-out sentence" field in Settings > Account takes 4-120 characters and becomes the clickable/reply line itself (defaults: "Unsubscribe" on the link style, 'Reply "unsubscribe" to opt out' on the reply style); an AI agent can set it in plain language, and the public API exposes it as opt_out_text. The appended line is now "{company address} · {opt-out sentence}" — the old "Sent by {name}" prefix has been removed, and the address is omitted when unset. {{opt_out}} places the sentence inside the email body or signature instead, leaving only the address on the appended line; omit the token and the full line is appended anyway. Opting out — by click OR by a reply saying unsubscribe / opt out / remove me / stop emailing me and their German, French, Spanish, Portuguese, Dutch and Italian equivalents — unsubscribes the person workspace-wide, suppresses the address and stops all active sequences. "Not interested" and "no thanks" are not treated as opt-outs. - Email Copywriting for Cold Outreach — Subject lines, opening lines, PAS framework, CTAs, follow-ups - Campaign Audience Segmentation — Role/industry/company size segmentation, intent signals, implementation - Re-engagement Campaigns — Timing, strategy, templates, best practices for reviving cold prospects - Campaign Failed Prospects & Processing Errors — Stuck processing loops, 3-strike recovery, daily limit exhaustion, how to prevent and fix failed prospects - Sending Pre-Written Personalized Emails — Make everything a variable: subject line, first line, body paragraphs. Import CSV with custom: columns, use {{custom.field_name}} in templates. Full end-to-end walkthrough. - Managing Campaigns via API — Create, update, start, pause campaigns programmatically. Enroll prospects (POST /api/v1/campaigns/:id/enrollments) and unenroll (DELETE /api/v1/campaigns/:id/enrollments with prospectIds or emails). Prospect creation supports linkedinUrl field for multichannel outreach. Required scopes: campaigns:write, enrollments:write. - Campaign says Running but never sends any emails — The PERSISTENT case (hours or days on Running, nothing EVER sent, and the "next email" time keeps sliding forward), as opposed to a brief Running/0-sent right after launch which is just normal paced sending. Most common cause: EVERY step in the sequence is switched off. Each step has its own Enabled checkbox and a switched-off step is greyed out with a Disabled badge; when no step at all is switched on, the campaign has an empty list to work through, so nobody is contacted and it waits indefinitely while still reading Running. Fix: campaign → Sequence tab → click the step → tick Enabled → save (no re-launch, no rebuild, no re-import; contacts keep their place and sending starts on the next cycle inside the sending window). WarmySender now blocks launching a campaign with no steps switched on, shows a clear notice on a campaign in that state, warns you the moment you switch off your last remaining step, and no longer waits silently. Also distinguishes the six legitimate waits: outside the sending window / not a send day, today's daily limit already reached (emails DID go out today — versus switched-off steps where the count never started), spacing between sends (Minutes Between Sends, per mailbox), no connected or selected mailbox, a Start Date in the future, and nobody eligible to email (empty Prospects tab / all Suppressed / no email addresses on the contacts). Guide: https://warmysender.com/documentation/campaign-says-running-but-never-sends-any-emails - Why did my campaign pause for bounces? — the customer-question page for the automatic bounce-rate pause, answering "why did my campaign stop by itself / what is Cooldown / how do I start it again?": https://warmysender.com/documentation/why-did-my-campaign-pause-for-bounces — WHAT THE CUSTOMER SEES: a status badge reading 'Cooldown' plus an amber notice reading 'Paused — high bounce rate' ("Too many of your emails bounced, which can hurt your sender reputation. Clean or re-verify your contact list, then click Resume to continue."), and an email to the WORKSPACE OWNER naming the campaign, the bounce rate reached and the limit crossed — so a stopped campaign is never a silent one. WHAT TRIPS IT, both conditions required: (1) the campaign has sent AT LEAST 50 emails — below that floor nothing can trip, so two unlucky bounces on a small list cannot stop a healthy campaign; (2) its bounce rate is ABOVE its limit, built-in 5% (exactly 5.0% does NOT trip it; above 5% does). Bounce rate = that ONE campaign's bounces divided by its sends; other campaigns are unaffected and keep sending. WORKED ARITHMETIC: 400 sent / 26 bounced = 6.5% → stops. The same list at 40 sent / 4 bounced = 10% → nothing happens, because 40 is under the 50-send floor — which is why a campaign can run a while, look fine, then stop without anything having changed. WHY THERE IS NO AUTO-RESUME (the core of the page): a high bounce rate is not a hiccup that passes with time, it is a statement about the contact list; restarting on a timer would send more mail to the same addresses, bounce at the same rate, stop again, and cost a little more sender reputation each round. Recovery is deliberately a human decision. FRESH BASELINE ON RESUME: resuming snapshots a baseline and measures bounce only on sends made AFTER it, so a cleaned list is judged on its new results — paused at 400 sent / 26 bounced, then 200 more sends with 4 bounces, measures 4 ÷ 200 = 2% and keeps running, NOT 30 ÷ 600 = 5%. Resume without cleaning and it stops again after about another 50 sends. HOW TO CLEAN THE LIST, in order: see which addresses bounced (Inbox → Campaigns tab → Delivery Issues) and read the pattern (a cluster on one company domain = one stale export; scattered across many domains = an old list); run the rest through the built-in Email Verifier and remove everything Invalid (Risky is usually a catch-all on the receiving end and normally fine to keep); apply the cleaned list back (never re-sends to anyone already emailed); then click Resume. Bounced addresses need no manual cleanup — an address that bounces for good goes on the Blocklist automatically and no campaign in that workspace will try it again. STRICTER LIMITS: Settings → Bounce Shield → 'Use my own, stricter limit' applies a lower number to EVERY campaign in the workspace; a single campaign can also carry its own limit in the campaign editor's advanced sending settings; where both exist WHICHEVER IS LOWER always wins, so the setting can only TIGHTEN protection and is arithmetically incapable of loosening it (setting it above a campaign's own limit changes nothing). Worked example: workspace 3% vs built-in 5% → 3% applies, so at 400 sent it stops on the 13th bounce (3.25%) where the built-in limit would have carried on to the 21st (5.25%). ALWAYS ON: pausing on high bounces and blocking bounced addresses run on every campaign in every workspace and have NO off switch — deliberate, because the harm attaches to the sending addresses and domain rather than to one campaign. Only the position of the line (stricter direction) and the notification email are configurable. NOT TRIGGERS: unsubscribes NEVER pause a campaign (a clean opt-out is a healthy cold-email outcome — the person is removed and suppressed, sending carries on); spam complaints NEVER pause a campaign either, because campaigns send from the customer's OWN mailbox so a report reaches THEIR provider and no copy reaches WarmySender — track those in Google Postmaster Tools / Microsoft SNDS, under 0.1%. DISAMBIGUATION TABLE for the other ways a campaign stops: 'Paused — messages were rejected' (rewrite content, then Resume), 'Paused — very low reply rate' (an optional floor the customer set), 'Daily limit reached' (normal pacing, clears itself), 'Paused after a payment issue' (clears itself on payment) — the first three wait for a person, the last two do not. 12-question FAQPage-structured FAQ. Schema: Article + FAQPage + BreadcrumbList JSON-LD. Internal links to https://warmysender.com/documentation/how-to-see-emails-that-didnt-get-delivered, https://warmysender.com/documentation/what-email-verification-results-mean, https://warmysender.com/documentation/apply-verified-list-to-campaign-without-duplicates, https://warmysender.com/documentation/why-a-prospect-was-marked-bounced, https://warmysender.com/documentation/how-are-my-campaign-metrics-calculated, https://warmysender.com/documentation/why-is-my-campaign-paused-after-a-payment-issue, https://warmysender.com/documentation/how-warmup-protects-your-deliverability, /inbox, /email-verifier, /settings, /leads. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — bounce protection is part of the Cold Emailing pillar and applies to email steps only. Account safety: the guard is unconditional and can only be tightened; pure documentation, zero outbound API surface. Keywords: why did my campaign pause, campaign paused high bounce rate, campaign in cooldown, what is cooldown, bounce rate too high, campaign stopped by itself, too many bounces, 5% bounce limit, resume paused campaign, clean my list before resuming, bounce shield stricter limit, do unsubscribes pause a campaign, do spam complaints pause a campaign. Built 2026-08-20. - How to add UTM tracking to cold email campaigns — switch UTM tagging on for ONE campaign and WarmySender appends utm_ parameters to every link in every email that campaign sends, so the visits it produces appear in the customer's own analytics under a name they chose instead of as anonymous 'Direct' traffic: https://warmysender.com/documentation/how-to-add-utm-tracking-to-cold-email-campaigns — Plain-language self-serve how-to answering "how do I track which campaign a website visitor came from / how do I add UTM tags to my cold emails / do I have to tag every link by hand?" WHAT A UTM TAG IS: extra text on the end of a web address (https://acme.com/pricing?utm_source=warmysender&utm_medium=email&utm_campaign=q3-agencies) — the landing page is unchanged, the website ignores it, the analytics tool reads it and files the visit under those names. WHY CENTRAL TAGGING BEATS HAND-TAGGING: a sequence has several steps each with several links; one typo (utm_medium=e-mail in step 3) silently splits the reporting; A/B variants multiply the work; a convention change means editing every step of every campaign. Describe the campaign ONCE and every link — including links added to a step later and links inside follow-ups — carries identically-spelled tags. WHERE IT LIVES (exact in-product path and labels): open the campaign > Sending Settings > Tracking section > the 'UTM tracking' switch, sitting directly under 'Track opens' and 'Track link clicks'; switching it on reveals Source, Medium and Campaign, with Term and Content behind an 'Advanced' disclosure. THE FIELDS: Source = where the traffic came from (short and consistent — warmysender, outbound, coldemail — pick one word and never vary it); Medium = the kind of traffic (email is the conventional answer and almost everyone should leave it there, because analytics tools group on that word); Campaign = which campaign — LEAVE IT BLANK and the campaign's own name is used automatically, tidied to a web-safe form (lowercase, spaces and punctuation to hyphens), so 'Q3 Outbound — Agencies' becomes q3-outbound-agencies; Term (optional, Advanced) = originally a paid-search keyword, useful in outreach for the audience or segment (agencies, saas-founders); Content (optional, Advanced) = telling two versions apart — an A/B variant, a step number, or which of two links in one email. Anything left empty is simply left OFF the links — nothing is invented on the customer's behalf; a blank Campaign box is the ONLY field with a fallback. HAND-TAGGED LINKS ARE NEVER OVERWRITTEN (the key invariant): if a link already carries a tag of its own — say https://acme.com/demo?utm_campaign=webinar-followup — that tag is kept exactly as written and only the tags that link was MISSING (source, medium) are filled in, so switching the feature on can never quietly rewrite attribution the customer set up deliberately. WORKS WITH CLICK TRACKING ON OR OFF — two independent switches doing different jobs: click tracking tells the CUSTOMER, inside WarmySender, that a prospect clicked; UTM tags tell the customer's ANALYTICS TOOL where a visitor came from. Both on = the click is recorded and the prospect arrives at the tagged address; UTM on + click tracking off = links go straight to the site, untouched apart from the tags. WHAT IS NOT TAGGED: only ordinary web links (http/https). The unsubscribe link is deliberately left alone, as are email addresses, phone numbers and in-email jump links. NO PERSONALISATION TAGS IN THE VALUES: the values describe the campaign, not the person, so a value containing something like {{firstName}} is left off the links rather than sent out raw — and a per-person value would fragment the analytics into thousands of unusable one-off entries, the opposite of what UTMs are for. READING IT IN GOOGLE ANALYTICS 4: Reports > Acquisition > Traffic acquisition, change the dimension dropdown from 'Session default channel group' to 'Session source / medium' (the campaign appears as warmysender / email), or to 'Session campaign' for the per-campaign breakdown; for depth use Explore > Blank (Free form) with Session source + Session medium + Session campaign as rows and Sessions plus key events as values, giving one table of how many people each campaign brought and how many converted. Quick check: send yourself a test from the campaign, click a link, and watch Reports > Realtime — ordinary reports are not instant, so allow up to a day before judging numbers. NAMING CONVENTIONS: lowercase everywhere (analytics treats Email and email as two different mediums — the single most common way UTM reporting gets messy), hyphens not spaces, one unvarying word for Source so all outreach totals together, Medium left as email, and one decided shape for campaign names. GOOD TO KNOW: OFF BY DEFAULT and set per campaign, so turning it on for one campaign changes nothing about any other; only emails sent AFTER saving are tagged and existing analytics history is untouched; duplicating a campaign carries the UTM settings over; every link is tagged including links to sites the customer does not own (a booking page, a LinkedIn profile), and the tags travel with the click but can only be READ in analytics the customer controls; a custom tracking domain and UTM tagging are separate and complementary (one changes which domain tracking links sit on, the other describes where the visitor came from); recipients can see the tags if they inspect a web address, so keep values professional and plain. 10-question FAQPage-structured FAQ covers whether click tracking is required (no), what a blank Campaign box does (campaign name, slugified), whether manual tags are overwritten (never), personalisation tags in values (not allowed, left off), effect on past emails and past analytics (none), whether the unsubscribe link is tagged (no), where results are actually seen (the customer's own analytics, not WarmySender), whether it must be set per campaign (yes — that is how each campaign gets its own name; duplication carries it over), deliverability impact (UTM parameters are internet-standard on marketing links and are not a spam signal in themselves), and partially-filled fields (only what was filled is added). Schema: Article + FAQPage + BreadcrumbList JSON-LD. Channels: Cold Email + Email Warmup + LinkedIn + Instagram + Multichannel — UTM tagging is part of the Cold Emailing pillar and applies to email steps only. Internal links to https://warmysender.com/documentation/how-to-use-your-own-tracking-domain, https://warmysender.com/documentation/see-who-opened-your-emails, https://warmysender.com/documentation/merge-tags, https://warmysender.com/documentation. Account safety: a per-campaign reporting setting only; it changes no sending limit, no pacing and no ramp, and adds zero outbound API surface. Keywords: utm, utm tracking, utm tags, utm parameters, utm_source, utm_medium, utm_campaign, google analytics, ga4, track campaign traffic, attribution, where did this visitor come from, tag links in cold email, link tagging, campaign tracking analytics. Built 2026-08-27. - How WarmySender handles automatic replies and out-of-office messages — the customer-question page answering "does an out-of-office reply stop my campaign / why did my sequence stop for one person / do auto-replies count in my reply rate?": https://warmysender.com/documentation/does-an-out-of-office-reply-stop-my-campaign — THE ANSWER IN ONE LINE: an automatic reply is not a reply. Out-of-office notices, vacation autoresponders, help-desk ticket acknowledgements ("thanks, we've received your enquiry"), "this address is no longer monitored" notices and "do not reply to this message" confirmations are recognised and are (a) NOT allowed to stop the sequence — follow-ups continue on their normal schedule — and (b) EXCLUDED from reply statistics, so the reply rate stays honest. Detection looks at the hidden markers mail systems attach to auto-responders, at the subject line shape, and at the wording; out-of-office phrasing is covered explicitly in English, Dutch, German, French and Spanish, and the hidden markers work in any language. Contrast with a GENUINE reply: a real person writing back DOES stop the sequence when 'Stop on reply' is switched on (the default, and the right setting for outreach), the conversation moves to the Inbox, and the reply is credited to the specific email in the sequence that earned it — so a follow-up that outperforms the opener is visible as such. RECOVERY when something slips through and a sequence stops that should not have: (1) open the campaign's Prospects tab, find the person, actions menu → 'Resume sequence'; or (2) open the message in the Inbox and relabel it 'Auto-Reply / Out of Office', which resumes the sequence on its own and removes it from the reply rate. THE GUARANTEE both paths carry: resuming continues from the next step the person has NOT received — emails already sent are never sent twice, the first email cannot go out again no matter how many times someone is stopped and resumed — and nothing is sent immediately; the next step is scheduled at the normal pace inside the normal sending window. Auto-replies stay visible in the Inbox under the 'Auto-Reply / Out of Office' label, so nothing is hidden, it simply does not distort reporting. Why it matters: treating a holiday notice as a reply would stop the sequence for someone who never read the email, flatter the reply rate, and leave the person with nothing when they got back — the handling exists to avoid losing the lead. Includes an FAQ (assistant replies count as genuine; ticket-system replies are recoverable; there is nothing to switch off, since what the customer controls is 'Stop on reply'). Internal links to /documentation/out-of-office-handling and /documentation/analytics. Built 2026-09-01. Account safety: pure documentation; zero outbound API surface. ### LinkedIn (46 guides) - Why did my LinkedIn invites pause today? — LinkedIn enforces its own invitation limits. When it signals that an account has hit one, WarmySender pauses sending on that account so it can rest, and sending restarts automatically — you do not re-launch anything, and retrying during the rest only extends it, because each further attempt counts against the account. The weekly ceiling depends on the LinkedIn plan the account is on (Free vs Premium / Sales Navigator), and you can declare which plan an account is on inside WarmySender to unlock the higher ceiling — declaring a plan you do not have does not help, because LinkedIn still enforces the real one. New accounts also ease in gradually over several weeks rather than starting at the ceiling. And several campaigns on ONE LinkedIn account share ONE daily allowance — two campaigns set to 75/day do not produce 150/day; adding another LinkedIn account is the only way to genuinely add capacity. Together these explain why a week can total far fewer invitations than the number configured. Guide: https://warmysender.com/documentation/why-did-my-linkedin-invites-pause-today - LinkedIn Outreach Overview — Seats and account connection; prospect search (LinkedIn/Sales Navigator/Recruiter) and audiences (CSV + Sales Navigator lead-list import); multi-step campaigns (connection requests with notes, follow-up messages, InMail, profile views, smart branches, A/B variants); engage & publish (like/comment, skill endorsements, schedule posts with media); unified LinkedIn inbox (voice notes, files, reactions, edit/delete, read receipts); multi-account rotation (round-robin/weighted/random); cross-account analytics; and account safety (per-account warm-up ramp, dedicated proxy, safe daily/hourly limits) - LinkedIn Account Connection & Setup — Connection methods, 2FA, account types, strategies, proxy support - Why won't my LinkedIn account connect? (and what to try): https://warmysender.com/documentation/why-wont-my-linkedin-account-connect — When a connection attempt doesn't go through, it's almost always a brief busy moment that clears within minutes; a failed attempt never uses up your seat, never charges you, and never affects your LinkedIn account. Wait for the short countdown and try once rather than retrying rapidly. Covers the two ways to connect (the browser-cookie method — RECOMMENDED and safest, with li_at tips: fresh value, no spaces/quotes, copy the whole thing; and email + password, which may ask for a verification code), how verification codes / 2FA work (LinkedIn's normal security check — enter promptly), what to do when LinkedIn instead pushes an approval prompt to the LinkedIn PHONE APP (there is no code to type — open the app and tap "Yes, it's me"; the screen watches for it and closes itself; about five minutes before the request lapses, and nothing is lost if it does), a short checklist if it keeps failing (sign in to linkedin.com first and clear any prompts, then retry with the one-click method, connect the right account), and when to contact support (email hello@warmysender.com with the time + which method). Account safety: pure documentation; zero provider API calls; a failed connection never uses up a seat or creates a charge. - What happens to my campaigns when I reconnect LinkedIn?: https://warmysender.com/documentation/what-happens-to-my-campaigns-when-i-reconnect-linkedin — The short answer: your campaigns come with you. Reconnecting a LinkedIn account — entering your details again, signing in a second time after a security check or verification code, or connecting the SAME LinkedIn profile again — moves your existing campaigns, your prospects and each prospect's exact place in the sequence across to the new connection automatically. Nothing to rebuild, no list to re-import, nobody to re-enrol, and NOBODY IS MESSAGED TWICE: each person resumes at their own next step, so someone who already had an invitation or a message does not get a second one. YOUR DAILY AND WEEKLY SENDING ALLOWANCE CARRIES OVER TOO and is deliberately NOT reset — reconnecting is never a way to send more today. That is framed as a protection for the customer's LinkedIn account, not a limitation: a sudden jump in activity is the pattern that gets an account restricted, so carrying the used amount across keeps the day looking like one steady day however many times someone signs in during it; the allowance refreshes on its own normal schedule. Campaigns that were RUNNING are PAUSED FOR A QUICK REVIEW after a reconnect so the customer can check things over before sending resumes — nothing is lost while paused, prospects stay enrolled at their exact step, and the campaign is resumed from the campaign page (no catch-up burst on resume). NEEDS RELINKING: if a campaign shows a “needs relinking” note, or asks the customer to reconnect the account to resume, the campaign is still pointed at a LinkedIn connection that is no longer active — an older connection for the same person, left behind when a newer one was made. It will NOT send in that state (we say so plainly rather than reporting “running” while nothing goes out), but nothing is lost while it waits: prospects and their progress are preserved. THE FIX: go to the LinkedIn accounts page, connect the SAME LinkedIn profile again (a different profile will not clear it), wait a moment — the campaign reattaches itself to the live connection, usually within a few minutes, with no manual re-selection — then open the campaign and click Resume. If the notice persists after reconnecting, check it is the same profile and that it shows as connected, then email hello@warmysender.com with the campaign name. INSTAGRAM behaves the same way: reconnecting the same Instagram profile keeps Instagram campaigns, prospects and progress, the allowance carries over, and a running campaign may be paused for review. Three worked examples cover “LinkedIn asked me for a security code and I signed in again”, “I connected the same profile a second time by mistake” and “my campaign says it needs relinking”. 9-question FAQPage-structured FAQ. Internal links to /documentation/why-wont-my-linkedin-account-connect, /documentation/why-is-my-linkedin-account-disconnected, /documentation/why-is-my-linkedin-account-disconnected, /documentation/how-campaigns-share-one-linkedin-accounts-daily-limit, /documentation/how-warmysender-protects-your-linkedin-account, /linkedin, /documentation. Account safety: pure documentation; zero outbound API surface; the page explicitly refuses the “reconnect to get a fresh allowance” reading. Built 2026-08-28. - Find LinkedIn Prospects — Search filters, Sales Navigator, boolean search, multi-term queries - LinkedIn Conversations & Messages — Conversation list, threading, replying, campaign integration - LinkedIn Safety Limits & Protection — Rate limits, account types, ramp-up, strategy limits, restriction handling - Why is my LinkedIn campaign sending slowly? — Per-account rate limits (Free: ~150/wk, Premium/Sales Nav: ~80-100/day), 4-6 week safety ramp, the short cooldown before the same person can be contacted again, account-safety-first philosophy. Cites documented LinkedIn provider-limits doc. - Why prospects might fail and how to fix — Per-prospect error reference: the profile is no longer reachable (exclude it in one click), a short cooldown before that person can be contacted again (a few hours, applies to the whole account), the daily or weekly LinkedIn limit reached (resumes automatically the next day), outside your sending window, the account needs reconnecting, or a prospect that stalled part-way through a step. Each case has a clear "fix it, exclude them, or simply wait" decision. /documentation#prospect-failures. - Why does my LinkedIn account show as disconnected? — LinkedIn account status lifecycle (OK / CREDENTIALS / IN_APP_VALIDATION), auto-pause behavior on disconnect, reconnect flow via Settings → LinkedIn Accounts, why some campaigns may need manual unpause. - Why is my LinkedIn account disconnected? (status pill semantics): https://warmysender.com/documentation/why-is-my-linkedin-account-disconnected — Plain-language explainer of every dashboard status pill (Connected · last activity Xh ago, Linking — finishing connection, Linking — taking longer than expected, Reconnect needed, Verification Required, Restricted, Disconnected). Documents the 1-hour orphan-watcher SLA that auto-relinks accounts stuck in 'Linking…' (introduced 2026-04-30 alongside Phase 5b of ). Includes 4-step reconnect walkthrough and 8-question FAQ covering account-standing-vs-rotation, pending-invite preservation, the deliberate split between live pill state and the 'First connected on dd/mm/yyyy' historical subtitle (UI honesty fix), reconnect safety, and deferred-reconnect harmlessness. Account safety always wins: the platform never bursts after a long disconnect. - Why did my LinkedIn account disconnect — and how to reconnect: https://warmysender.com/documentation/why-is-my-linkedin-account-disconnected — Self-serve guide for the routine ~30-day LinkedIn token rotation (and other our LinkedIn integration CREDENTIALS-status triggers: password changes, 2FA resets, IP region changes, security challenges). Plain-language explanation of why our LinkedIn integration cannot silently refresh, what the user sees (Reconnect badge, auto-paused campaigns, one-click reconnect email), 4-step ~30-second reconnect flow, the + self-heal sweeper that auto-resumes campaigns within 5 minutes, when to ask support (2x reconnect failures, >30min stuck Connecting, recurring weekly disconnects on paid LinkedIn), and 8-question FAQ covering pending invites (preserved), recipient visibility (none), data safety (no loss), session rotation explanation, reconnect safety, deferred reconnect, and post-reconnect troubleshooting. Cross-references (Apr 29 reconnect CHECK-constraint edge case, fix in flight). Account safety always wins: no burst catch-up after reconnect. - Understanding LinkedIn campaign acceptance rate — Webhook-first detection ('invite_accepted'), 6-hour polling fallback, why acceptance rates lag 1-3 days, pending vs accepted vs withdrawn states, how to read dashboard metrics correctly. - LinkedIn Audiences & Enrichment — Audience creation, profile enrichment, rate limits, campaign linking. Enrichment is optional — campaigns can start immediately without waiting. - LinkedIn Campaigns — Campaign creation, step types, daily limits, monitoring, management - LinkedIn Posts & Engagement — Post tracking, engagement strategy, performance metrics - LinkedIn Templates: Purpose & Workflow — Template types, copy-on-write, auto-created templates - Multi-Account LinkedIn Setup — Multi-seat management, Sales Navigator sharing, sender rotation - LinkedIn Proxy & IP Security — Dedicated proxies, Auto/Country/Custom modes, FAQ - LinkedIn Connection Request Notes — Blank vs personalized, 300 char limit, best practices - LinkedIn InMail Best Practices — When to use InMail, writing tips, campaign integration, credit management - LinkedIn Post Reactions (Likes API) — Automate post likes/reactions. Rate limits by account age (5-50/day). Shared daily limit with comments. - LinkedIn Profile Editing — Edit headline (220 chars), summary/about (2,600 chars), Open to Work toggle directly from WarmySender. - LinkedIn Message Management — Delete messages (60-minute window), reactions, conversation management. - Premium Unified Inbox — See when your LinkedIn messages are delivered and read: https://warmysender.com/documentation/see-when-your-linkedin-messages-are-delivered-and-read — Every LinkedIn message you send from the WarmySender Inbox shows a Sent (single check) → Delivered (double check) → Seen (with a time) status underneath it, automatically, so you know whether outreach landed and whether it was read. Delivered = reached their LinkedIn inbox; Seen = they opened and read it. Campaign messages carry the same statuses. A message never showing "Seen" usually means they haven't opened it yet, or they have read receipts off on their own account. A message stuck on the single check ("Sent") means the connected LinkedIn account needs a quick reconnect (LinkedIn > Accounts). Account safety: pure documentation; zero provider API calls. - Premium Unified Inbox — Send attachments and voice notes in LinkedIn messages: https://warmysender.com/documentation/send-attachments-and-voice-notes-in-linkedin-messages — The Inbox reply box supports file attachments (paperclip: PDF, image, deck, spreadsheet), voice notes (microphone: record in-browser, hear it back, send), and quoted replies (reply arrow: answer one specific earlier message). Everything sends straight to the LinkedIn conversation. Voice-note tip: 20-40 seconds lands best; if the mic doesn't respond, allow the microphone in the browser's site settings for warmysender.com and reload. Automated campaign steps intentionally stay text-only to keep sending patterns natural and safe — the richer tools are for live Inbox conversations. Account safety: pure documentation; zero provider API calls. - Premium Unified Inbox — React to, edit, and delete LinkedIn messages: https://warmysender.com/documentation/react-to-edit-and-delete-linkedin-messages — Hover over a message in the Inbox for controls: react with an emoji (smiley icon, works on any message), edit a message you sent (pencil icon), or delete one you sent (trash icon, permanent, asks to confirm). Editing and deleting are available only for a short window after sending (roughly an hour — LinkedIn's own limit, not a WarmySender setting); after it, the pencil/trash icons disappear and a short follow-up message is the fix. Reactions still work on older messages. Editing/deleting one already-sent message doesn't change the campaign's saved steps. Account safety: pure documentation; zero provider API calls. - Premium Unified Inbox — Mute conversations and mark them unread: https://warmysender.com/documentation/mute-conversations-and-mark-them-unread — Two Inbox housekeeping controls that work on LinkedIn and email threads. Mute quiets a noisy thread (it stays in the Inbox, the other person isn't notified, new messages still arrive) — reversible via Unmute. Mark as unread re-flags a read conversation as a "deal with later" marker — pair with the unread / "needs reply" filter for a lightweight to-do list. Mute vs archive: mute = "volume down" (stays in list), archive = "put away" (out of main view); both reversible, neither deletes messages. Muting never pauses a campaign; a prospect reply already stops follow-ups by default (Stop-on-Reply). Account safety: pure documentation; zero provider API calls. - Premium Unified Inbox — Accept or decline connection requests from your Inbox: https://warmysender.com/documentation/accept-or-decline-connection-requests-from-your-inbox — LinkedIn connection requests OTHERS send you appear in the Inbox (LinkedIn side) with the sender's name, note, and Accept / Decline buttons, so you can triage incoming invitations without opening LinkedIn. These are RECEIVED invites — separate from the invites your campaigns SEND OUT (outbound accepts are tracked on the campaign Prospects view). Declining is quiet (no notification to sender). Accepting only makes the connection — it does NOT auto-add anyone to a campaign; to follow up, add them yourself to a message-only campaign. Per-account view when multiple accounts are connected. WarmySender never auto-accepts — you decide each one, the account-safe way; work through a large influx in batches. Account safety: pure documentation; zero provider API calls. - LinkedIn Campaigns — Attach files to your LinkedIn campaign messages: https://warmysender.com/documentation/attach-files-to-your-linkedin-campaign-messages — Attach a file to a Send-message step in a LinkedIn campaign: a PDF one-pager, an image, a slide deck, or a short voice note. The file is saved ONCE with the step and sent along with that message to EVERY prospect the step reaches — no re-uploading per person. The attachment belongs to the step (not the whole campaign), so a two-message sequence can have a one-pager on step 1 and a case study on the follow-up, or a file on one step and plain text on the other. Works with personalization variables ({{first_name}}, {{company}}): each prospect gets a message addressed to them plus the same shared file. Supported types: PDFs, images (PNG/JPG), slide decks, documents, plus a short voice note; keep files under 20 MB (if a file won't attach it's almost always too large — compress it or share a link in the text). To change the file, edit the step and swap the attachment (applies to prospects who reach the step from then on). Best practices: keep it relevant and light (a one-pager is a hook, not the whole pitch), one file per step, let personalization variables do the talking, make the file self-explanatory (clear filename + first page). Campaign attachment = shared resource for automated outreach; per-person files and personal voice notes belong in the Inbox reply box once someone replies. Account safety: sending pace and daily limits are unchanged — the file rides along with a message that was already going out; if a file can't be included on a send, the text still goes out. Pure documentation; zero provider API calls. - LinkedIn Add-On — Enrich a prospect from LinkedIn: https://warmysender.com/documentation/enrich-a-linkedin-prospect — On any prospect in Prospects, click "Enrich from LinkedIn" to pull a fuller profile onto their detail view: current role and tenure, top skills, education, how you're connected (1st/2nd/3rd-degree), and follower count. On-demand, ONE prospect at a time, only on your click — never a background bulk sweep. IMPORTANT: enriching pulls the person's LinkedIn profile, which is the SAME as VIEWING it — so it can appear in their "who viewed your profile" AND it counts toward your account's safe daily number of profile views. When you reach that safe daily number the Enrich button turns off with "Daily LinkedIn limit reached — try tomorrow" and comes back the next day. Needs a LinkedIn profile link on the prospect + a connected LinkedIn account. Sends the person nothing (no message, no request). Account safety: enrichment is user-initiated, one at a time, and hard-stops at the safe daily number — viewing too many profiles too fast is a flag risk, so the platform paces it and never bulk-enriches. - LinkedIn Add-On — Publish or schedule LinkedIn posts: https://warmysender.com/documentation/publish-or-schedule-linkedin-posts — Write a LinkedIn post in LinkedIn > Posts and publish it now or schedule it for later, from your personal profile OR a company page you manage (per-post choice via the "post as" picker; only pages your connected account admins appear). Add an image, keep drafts, and see each published post's likes/comments/shares/views in the Posts list (open on LinkedIn to reply). Statuses: draft (saved, not shared) / scheduled (goes out automatically at the set time, editable or cancelable until then) / published (live). Account safety: posting is kept to a safe daily number per account and paced out ("paced to stay within safe limits" note) — schedule more than the day's number and the extras flow to the next available time rather than bursting out; a flurry of posts is a flag risk, so pacing protects the account. Posting has its own daily number, separate from messaging/connection limits. - LinkedIn Add-On — Post job openings and review applicants: https://warmysender.com/documentation/post-job-openings-and-review-applicants — If you're hiring, post a LinkedIn role from LinkedIn > Jobs, then review applicants and move them through simple stages (new → reviewed → contacted → rejected → hired). Open a candidate to read their headline and download their resume when they attached one. Job states: draft (not visible) / active (live, collecting applicants, count updates) / closed (filled or paused; you can still review the applicants it got). Requires a LinkedIn account that can post jobs (a hiring-enabled account). Account safety: publishing new roles is kept to a small safe daily number per account (many roles fast is an unusual, flag-prone pattern); reviewing applicants and downloading resumes is NOT limited — only publishing new roles is paced. - LinkedIn Add-On — Check InMail credits and edit your LinkedIn profile: https://warmysender.com/documentation/check-inmail-credits-and-edit-your-linkedin-profile — On LinkedIn > Accounts you can (1) see a connected account's remaining InMail credits (LinkedIn's own allowance for messaging people you're NOT connected to, set by the account's plan; WarmySender just shows what's left — LinkedIn refreshes it on its own schedule), and (2) edit your own LinkedIn profile — headline, About/summary, and the Open to Work toggle — then save, applying the change to your LinkedIn profile without opening LinkedIn. Account safety: checking the InMail balance is a read that changes nothing; profile edits are kept to a small safe daily number per account so the activity looks natural (changing a profile many times fast is a flag risk) — hit the day's limit and it refreshes next day, you're gently paced not blocked. Profile edits and InMail checks are separate from campaign sending and don't reduce campaign reach. - LinkedIn Analytics: Followers & Engagement — Follower tracking, engagement history, resync and restart actions. - LinkedIn Recruiter Search Filters — Tenure, employment type, degree filters. Requires Recruiter account. Saved searches. - LinkedIn Skill Endorsements (Beta) — Endorse skills to boost acceptance 2-3x. 5-20/day limits. Partial skill matching. - LinkedIn Publishing & Reposts (Beta) — Create posts (3K chars), reposts. Public/Connections visibility. 5 reposts/day. Post analytics. - LinkedIn Recruiting & Job Postings (Beta) — Create job postings, track applicants, download resumes. 2 postings/day limit. - LinkedIn Proxy Management — Auto/Country/Custom modes, 20+ countries, dedicated fixed proxy per account. - Why my LinkedIn campaign sometimes sends outside my chosen hours — Sending-window enforcement explainer (start/end hour, schedule days, timezone, clamp), the Apr 27 2026 unified-scheduler bug fix (LinkedIn branch was skipping the clampToSendingWindow function due to copy-paste omission, causing ~134 sends in 7d to queue outside chosen hours; now both email and LinkedIn branches call the same function), why working-hour sends matter for LinkedIn automation detection per documented per-account guidance, and how to verify your campaign respects its window from the dashboard. - LinkedIn webhooks and Slack notifications: how replies and accepted invites flow to your team — Canonical reference for the 4 linkedin.* events (reply_received, invite_accepted, message_sent, account_disconnected), where to subscribe (/settings?tab=webhooks), Slack Block Kit auto-formatting (host = hooks.slack.com), Discord embed auto-formatting (host = discord.com / discordapp.com — new Apr 28 2026), n8n / generic raw JSON shape, the new Test webhook button + last_triggered_at timestamp, troubleshooting (last_triggered_at not updating, Slack URL malformed, events array missing, signature mismatch, platform-wide silence — now monitored every 3h via cron compare of inbound LinkedIn replies vs linkedin.reply_received emit count). Account safety note: webhooks are read-side only — receiving them never triggers LinkedIn API calls; subscribing does not change polling cadence, caps, or ramp pacing. - How LinkedIn account safety limits work — invites, messages, InMails, and the gradual ramp — Plain-English explainer of the 4 cap dimensions (invites/week, messages/day, InMails/day NEW Apr 27 2026, profile views/day, engagements/day), the MIN(account_type_cap, strategy_cap) computation, the 4 strategies (new_account 6w, established 4w, veteran 2w, recovery 8w), the 4 account types (free/premium/sales_navigator/recruiter) and their ceilings, the new dedicated InMail ramp curve (Sales Nav veteran w2 = 40/day = center of LinkedIn's 30-50 safe band; Premium = 15/day; Free = 0 InMails since LinkedIn restricts InMail to paid tiers), why we ramp gradually per LinkedIn's published guidance, the customMaxInmailsPerDay override (capped at 50/day = LinkedIn's published ceiling), how to check current limits from LinkedIn > Accounts, and the 'account safety always wins' principle from CLAUDE.md (when user config conflicts with safety limits, safety wins and the step waits/defers). - Why an account can show Connected but stop sending — Every connected LinkedIn, WhatsApp and Instagram account is re-checked with the network itself about every 30 minutes rather than trusting the last known state. If the session has lapsed on the network's side (signed out, linked device removed, security check or password change pending, account restricted), the account switches to 'Reconnect needed' within roughly half an hour and campaigns using it pause automatically — remaining prospects stay queued, nothing is lost, and an email goes out naming the account. Fix: open LinkedIn > Accounts, WhatsApp > Numbers or Instagram > Accounts, click Reconnect, complete the short sign-in or re-scan, then resume the campaign; history, warm-up progress and sending pace are all kept. If it keeps dropping, clear the pending security check in the network's own app first. Guide: https://warmysender.com/documentation/why-does-my-account-show-connected-but-campaigns-dont-send - LinkedIn Campaign Documentation: https://warmysender.com/documentation/linkedin — Plain-English explainer covering (a) how schedule_days, sending windows, and account ramp interact (e.g. "Mon/Tue/Wed schedule + Thursday today = 0 sends is correct"), (b) why acceptance rates can appear to lag 1-3 days behind real acceptances (LinkedIn webhook arrival timing + 6h polling fallback), and (c) what happens when a LinkedIn account disconnects (auto-pause, reconnect via Settings → LinkedIn Accounts, in-flight campaigns auto-resume, >24h disconnect triggers email notification). Account safety always wins: WarmySender never exceeds LinkedIn's safe daily limits, even when catching up after a backlog. - What happens to my LinkedIn seats and accounts if a payment fails? — An unpaid invoice pauses the WHOLE account, whichever part of it the invoice was for: a LinkedIn seat invoice is money owed on the account, so while it is outstanding the LinkedIn steps stop AND the cold email campaigns stop AND email warmup stops on every mailbox. (CORRECTED 2026-07-31 — this entry previously claimed a seat payment problem "only affects the LinkedIn side" and that "cold email and warmup keep running as long as the main plan is paid". That is wrong and is contradicted by a deliberate policy in the billing code: an unpaid invoice suspends the account whether it bills the plan or an add-on, and the warmup entitlement rule has no seat exception at all.) The one asymmetry runs the OTHER way: if the MAIN PLAN invoice is the unpaid one while the LinkedIn seats are paid and current, campaigns in that workspace keep sending — but warmup still pauses, because warmup follows the main plan. Connected LinkedIn accounts are temporarily set aside so nothing runs while billing is unresolved; logins and campaign progress are kept safe for a grace period of at least a week, and — as of 2026-08-12 — the login is NOT released at all while the card is still being retried (retries commonly run two to three weeks), so a slow retry can never cost a customer their account. Settling the outstanding invoice is the only action that clears the hold — pressing Resume, or trying to switch warmup back on, does not work while an invoice is outstanding. Once it clears, everything comes back on its own, usually within a minute; no reconnect is needed if payment landed inside the grace window, and after longer a quick one-time reconnect (LinkedIn → Accounts → Reconnect) may be needed. Most common cause is a bank/card block on online subscriptions; paying from another card usually resolves it. Guide: https://warmysender.com/documentation/linkedin-seats-after-a-failed-payment - How do I switch my LinkedIn seats to annual billing? — Seats you already own can be moved onto annual or 3-year billing at any time from Billing; nothing is cancelled and no connected LinkedIn account is touched. Per seat: $15/month, $120/year ($10/month, 33% less), $288 per three years ($8/month, 47% less). Example: 5 seats cost $900 across a year billed monthly versus $600 billed annually — a $300 saving; on the 3-year term, $1,440 versus $2,700, a $1,260 saving. Adding seats and changing term happen together in one step and one charge (1 monthly seat to 5 annual seats is a single confirmation). Unused time on the current seats is credited against the new charge, so the same days are never paid for twice. A seat term can never be longer than the plan's term — move the plan to the longer term first if the option is not offered. Longer terms are prepaid and reducing seats mid-term does not refund the unused part; a declined card leaves everything exactly as it was; an older cheaper per-seat rate is kept rather than repriced to list. Guide: https://warmysender.com/documentation/how-do-i-switch-my-linkedin-seats-to-annual-billing ### Prospects & Data (8 guides) - Managing Prospects & Contacts — Global statuses, adding methods, lists, bulk ops, filtering - Contacts & CRM — Contact vs prospect, interaction history, filtering - Prospect Lists & Campaign Creation — List creation, campaign from list, management - CSV Import (Advanced Guide) — Column mapping, auto-mapping, validation, dedup, 10K row limit. Custom columns: prefix with custom: (e.g. custom:icebreaker) → becomes {{custom.icebreaker}} merge tag in campaigns. Any column not matching built-in fields auto-maps as custom field. - Leads Database (B2B Contacts) — 200M+ verified B2B contacts across the USA & Canada, sourced from multiple reliable and publicly available sources. Covers all major industries and sectors. Includes business phone numbers (not personal mobile/cell). Data cross-referenced and continuously enriched for accuracy. Search filters, credits system, saving & exporting - Email Verifier — Check existing addresses before you send (valid / invalid / risky / unknown), single checks and bulk verification. NO SUBSCRIPTION REQUIRED: one free check per day with no account, one-time credits from $79 for 100,000 that never expire, or a monthly allowance included from the Pro plan upward (Pro 600/month, Enterprise 10,000/month, Ultimate 20,000/month). NOTE: the verifier CHECKS addresses you already have; it never discovers a missing one. WarmySender has no per-profile email lookup — the two ways a contact gains an address are importing a list that already includes it, or saving a contact from the Leads Database (search is free and masked; the address is revealed on save) - Data Hygiene & List Cleaning — Pre-import cleaning, built-in tools, ongoing maintenance, Bounce Shield - Advanced Custom Fields Guide — Create unlimited custom fields via CSV import (custom: prefix). Use as merge tags in subject lines AND body, in any of five equivalent spellings: {{custom.field_name}}, {{custom_field_name}}, {{custom_fields.field_name}}, {{customFields.field_name}} or the bare {{field_name}}. Popular fields: icebreaker, pain_point, personalized_line. Supports fallbacks. Unknown tags send as empty and are named in the pre-launch check; [square-bracket] placeholders from other tools are flagged with a one-click fix. ### Platform (20 guides) - Security & Compliance — TLS encryption, bcrypt hashing, RBAC, CAN-SPAM, GDPR - Email & LinkedIn Templates — My Templates, categories, Template Library, frameworks - Unified Inbox — Campaigns/LinkedIn tabs, filtering, replying, sentiment tagging, bulk ops - Analytics & Reporting — Overview dashboard, 7 analytics tabs, date ranges, CSV export, benchmarks - Teams & Workspaces — Multiple workspaces for agencies and per-client management (Pro: 1, Enterprise: 5, Ultimate: 10). Create from workspace switcher in sidebar. Each workspace is isolated (own mailboxes, campaigns, prospects, LinkedIn accounts). Email quota shared across workspaces; LinkedIn seats billed per workspace ($15/seat/month). Roles: owner/admin/user/readonly. Team limits: Pro 2, Enterprise 4, Ultimate 15 per workspace. - Billing & Subscription Plans — Subscription is account-level (covers all workspaces). 3 plans: Pro $14.99/mo (10K emails, 50 mailboxes, 2 team members), Enterprise $69.99/mo (100K emails, 400 mailboxes, 4 members, 15K leads/mo), Ultimate $199/mo (300K emails, 800 mailboxes, 15 members, 30K leads/mo, 10K verifier/mo). The Business plan ($29.99/mo) was discontinued — existing Business customers keep their plan and pricing; new customers choose Pro, Enterprise, or Ultimate. Unlimited warmup on every paid plan. Annual billing saves 55% (limited-time evergreen offer): Pro $6.74/mo equivalent ($80.88/yr, saves $99.00 vs 12× monthly), Enterprise $31.49/mo equivalent ($377.88/yr, saves $462.00), Ultimate $89.55/mo equivalent ($1,074.60/yr, saves $1,313.40). Customers already on a previous annual rate keep their existing price. LinkedIn seats: $15/seat/month per workspace (1-10 seats), or $120/seat/year (33% off) on annual billing; seats added before July 6, 2026 keep the rate they were created at — existing customers are never moved to the new price. Email quota shared across all owned workspaces. Upgrade/downgrade anytime via Stripe. For current pricing always defer to https://warmysender.com/pricing — that page is authoritative. - Affiliate Program — How the affiliate program works: anyone can join for free (no credit card, no approval step, no paid plan needed — you don't have to be a customer), your referral link is ready the moment you sign up, and you earn 50% of your referrals' plan payments, net of payment processor fees, for their first 12 months (add-ons like LinkedIn excluded). 60-day referral window, 45-day holding period (refund protection), $100 minimum payout, paid via Wise or bank transfer. Worked examples + rules. Guide: https://warmysender.com/documentation/how-the-warmysender-affiliate-program-works — Timing (when a referral appears vs when earnings start — referrals show at signup, commissions begin at their first plan payment): https://warmysender.com/documentation/when-do-affiliate-referrals-and-earnings-show-up - Suppression Lists & Compliance — Blocklist management, auto-suppression, CAN-SPAM, GDPR - Email Deliverability (SPF, DKIM, DMARC) — Record setup, verification, common DNS providers - Custom Tracking Domains — CNAME setup, verification, deliverability benefits - Bounce Shield Protection — Configurable settings, threshold monitoring, auto-pause, auto-blocklist - API Keys & Webhooks — API key creation, scopes, webhook events, security, delivery - Onboarding & Product Tours — Main tour, page tours, nurture email sequence - Webhook Integration Guide — Setup, events, payload format, CRM integration, Zapier/Make/n8n - API Quickstart Tutorial — Create key, first request, response handling, common use cases - Managing Campaigns via API — Create/update campaigns programmatically. Idempotency-Key support. Status flow: draft → scheduled → running. LinkedIn campaigns not yet via API. - Webhook Events Reference — 10 event types: reply.received, email.bounced, email.unsubscribed, email.opened, email.clicked, prospect.suppressed, limit.hit, linkedin.reply_received (includes reply body + prospect LinkedIn URL), linkedin.invite_accepted, webhook.test. Wildcard * subscription. Per-enrollment dedup for LinkedIn events (first reply only). - Webhook Signature Verification — HMAC-SHA256 in X-Warmy-Signature header. Retry: 10 attempts, exponential backoff up to 72 hours. - Campaign API Error Handling — Rate limit: 60 req/min per API key. Error codes, retry strategies, idempotency caching (24h). - Domain Reputation Monitoring — Reputation factors, external tools, improvement steps, recovery ### Integrations (13 guides) - Automatically email new leads from a form or popup — Wire a website form, popup, or signup (via Zapier Webhooks, Make HTTP, n8n HTTP, or any tool that can POST a webhook) to capture a lead AND drop it into a cold email campaign in one call. One-call recipe: POST https://warmysender.com/api/v1/prospects with Authorization: Bearer (key starts with ws_), body {email, firstName, lastName, company, enrollInCampaignId}; two-call alternative also covered (create prospect, then POST /campaigns//enrollments). Campaign must be set to Running for emails to send (draft/paused/scheduled returns a clear warning, lead still saved). Sends are paced within the campaign sending window + daily limits + warmup ramp to protect domain reputation; suppressed/unsubscribed/bounced leads auto-skipped. Leads can carry a linkedinUrl for LinkedIn + multichannel outreach too: https://warmysender.com/documentation/auto-email-new-leads-from-a-form - Add leads from a website form or popup (and auto-start a campaign) — The list-based, always-on companion to the guide above. A form POSTs a lead's email plus a list ID; the lead is added to that list and, when a Running campaign is linked to the list, enrolled automatically (continuous enrollment). Recipe: POST https://warmysender.com/api/v1/prospects with Authorization: Bearer (key needs prospects:write; key starts with ws_), body {email, firstName, listId, enroll}. enroll defaults to true (auto-enroll into the linked Running campaign); set enroll:false to add to the list only. Response echoes listId and a list object {attached:true, enrolledCampaigns:N} on success, or {attached:false, error:"list_not_found", message} if the list ID is wrong (lead still saved). Find the list ID on the Lists page. Swap campaigns without touching the form by re-linking a new Running campaign to the same list. Campaign emails send links, not attachments — host the file and put the link in the email. curl + JavaScript fetch examples included. Sends paced within sending window + daily limits + warmup ramp; suppressed/unsubscribed/bounced auto-skipped: https://warmysender.com/documentation/add-leads-from-a-website-form - Webhooks — Getting Started — Canonical webhook primer: full event catalog (incl. linkedin.reply_received with message body, linkedin.invite_accepted), HMAC-SHA256 signing (X-Warmy-Signature / X-Warmy-Timestamp / X-Warmy-Event-Id), 10-attempt retry schedule (1min→72h), Retry-After honoring on 429, per-enrollment dedup, first-reply-only semantics, test button end-to-end delivery, account-safety guarantees (zero LinkedIn API calls triggered by emit) - HubSpot Integration — Connect HubSpot via WarmySender's API + real-time webhooks through a no-code bridge (Zapier, Make, or n8n) to import contacts and log replies/opens/connections as activities. No native HubSpot marketplace app — the supported path is API + webhooks + bridge. - Salesforce Integration — Connect Salesforce via WarmySender's API + real-time webhooks through Zapier/Make/n8n to create leads and log reply/connection events as tasks. No native Salesforce package — API + webhooks + bridge only. - Pipedrive Integration — Connect Pipedrive via WarmySender's API + real-time webhooks through Zapier/Make/n8n to create contacts and log activities on reply or connection. No native app — API + webhooks + bridge. - Zapier Integration — Connect to 7,000+ apps no-code. Step-by-step Zap creation, field mapping, popular recipes - Make (Integromat) Integration — Advanced scenarios with conditional routing, data stores, error handling - n8n Integration (Self-Hosted) — Open-source workflow automation, webhook nodes, self-hosted privacy - Slack Notifications (Native — No Middleware) — Paste a Slack Incoming Webhook URL (hooks.slack.com/…) into Settings→Webhooks; we auto-format every event as Block Kit. LinkedIn reply notifications include the reply body. Multi-channel routing via multiple webhooks. Microsoft Teams requires middleware (via n8n/Zapier). - Google Sheets Integration — Auto-log campaign events for reporting. Zapier, Make, or Apps Script - GoHighLevel (GHL) Integration — Connect GoHighLevel via WarmySender's API + real-time webhooks through Zapier/Make/n8n; route events to sub-accounts and trigger GHL workflows. No native app — API + webhooks + bridge. - Airtable Integration — Custom engagement tracking database with views, automations, team sharing ### Troubleshooting (38 items) Common issues and solutions for: invalid login errors, connection refused, authentication failed, SSL/TLS certificate errors, mailbox not found, warmup emails in spam, warmup not sending, campaign not sending, rate limiting, mailbox disconnected, daily limit reached, LinkedIn restricted/blocked, LinkedIn invites not accepted, campaign cooldown, CSV import failed, tracking domain verification, emails in Promotions folder, unsubscribe handling (auto-appended footer link + RFC headers), OAuth token expired, LinkedIn analytics discrepancy, Excel import conversion, campaign paused/sending window, LinkedIn blank connection note, DNS setup issues, slow warmup progress, spam complaints handling, login/session issues, webhook debugging, LinkedIn enrichment slow/failed/uses-my-account, campaign without enrichment, dashboard score dropping, analytics no data, prospect stuck processing loop, LinkedIn search errors, LinkedIn endorsement no skills, LinkedIn message delete 60-min window. - How do I create additional workspaces? — Enterprise/Ultimate: Click workspace switcher → Create Workspace. Pro: 1 workspace only, upgrade to Enterprise for more. No extra charge. - How does billing work with multiple workspaces? — Subscription is account-level (all workspaces). Email quota shared. LinkedIn seats billed per workspace. Example: Pro + 3 workspaces + 2 LinkedIn seats = $44.99/month ($14.99 Pro + 2 × $15 LinkedIn seats). ### FAQ Pages - Email Warmup FAQ: https://warmysender.com/faq/email-warmup (31 questions) - Email Deliverability FAQ: https://warmysender.com/faq/deliverability (27 questions) - LinkedIn Safety FAQ: https://warmysender.com/faq/linkedin-safety (15 questions) - WhatsApp Safety FAQ: https://warmysender.com/faq/whatsapp-safety (28 questions — daily/first-message/hourly limits, linked-device connection, ramp for a new number, what counts against the budget, group chats, read receipts, restriction risk, plus what a message can carry: up to 5 attachments of up to 15MB each, voice notes recorded in the inbox reply box, emoji reactions, quoted replies, a 15-minute edit window and delete-for-everyone, whether WhatsApp Business or approved message templates are needed (they are not), one-seat-one-number and shared team inboxes, existing-conversation sync, mute/archive/pin/mark-unread, delivered-and-read state, and what an AI agent may and may not do) - Instagram Safety FAQ: https://warmysender.com/faq/instagram-safety (12 questions — combined action limits, message requests, secure connection, ramp schedules, real-time inbox) ### API Documentation - REST API: https://warmysender.com/docs/integrations (authentication, endpoints, webhooks, code examples) Support: hello@warmysender.com (72-hour response on business days) ## Content Library (670 pages) ### Blog Articles (524) #### AI Innovation (1 articles) - [Top 15 AI-Powered Cold Email Tools (ChatGPT Integration)](https://warmysender.com/blog/posts/113-top-15-ai-powered-tools) (updated 2026-07-09) #### AI Outreach Automation (80 articles) - [AI Agents for Cold Outreach: The Complete 2026 Guide](https://warmysender.com/blog/posts/ai-agents-for-cold-outreach-complete-guide-2026) (updated 2026-08-27) - [Apollo.io Alternatives (2026): Best Tools for Data + Sending](https://warmysender.com/blog/posts/46-apollo-alternatives) (updated 2026-07-13) - [Apollo vs ZoomInfo + WarmySender for Complete Sales Stack (2026)](https://warmysender.com/blog/posts/100-apollo-vs-zoominfo-stack) (updated 2026-07-13) - [Best CAN-SPAM Compliant Cold Email Tools (2026)](https://warmysender.com/blog/posts/36-can-spam-compliant) (updated 2026-07-13) - [Best Cold Email Tools for Apollo.io Users (2026)](https://warmysender.com/blog/posts/22-apollo-users) (updated 2026-07-13) - [Best Cold Email Tools for Compliance-Heavy Teams (2026)](https://warmysender.com/blog/posts/30-compliance-heavy) (updated 2026-08-19) - [Best Cold Email Tools for Deliverability Recovery (2026)](https://warmysender.com/blog/posts/34-deliverability-recovery) (updated 2026-07-13) - [Best Cold Email Tools for Enterprise SDR Teams (2026): Complete Buyer's Guide](https://warmysender.com/blog/posts/03-enterprise-sdr) (updated 2026-08-19) - [Best Cold Email Tools for Follow-Up Specialists (2026)](https://warmysender.com/blog/posts/37-follow-up-specialists) (updated 2026-07-13) - [Best Cold Email Tools for Global Outreach (2026)](https://warmysender.com/blog/posts/35-global-outreach) (updated 2026-07-13) - [Best Cold Email Tools for Outlook/Microsoft 365 Users (2026)](https://warmysender.com/blog/posts/17-outlook-m365) (updated 2026-07-13) - [Best Cold Email Tools with Video Outreach (Loom/Vidyard) (2026)](https://warmysender.com/blog/posts/29-video-outreach) (updated 2026-07-13) - [Best Email + LinkedIn Multi-Channel Tools (2026)](https://warmysender.com/blog/posts/27-email-linkedin-multichannel) (updated 2026-07-13) - [CASL Compliance for Canadian Cold Email 2026: Complete Guide](https://warmysender.com/blog/posts/casl-email-compliance-canada-2026) (updated 2026-07-13) - [Catch-All Domains in Cold Email: Should You Email Them? Risk Analysis and Decision Framework](https://warmysender.com/blog/posts/catch-all-domains-cold-email-risk) (updated 2026-09-08) - [Cold Email Bounce Rate: What Is Too High?](https://warmysender.com/blog/posts/cold-email-bounce-rate-what-is-too-high) (updated 2026-09-06) - [Cold Email for Accounting & Bookkeeping Firms (2026)](https://warmysender.com/blog/posts/cold-email-for-accounting-bookkeeping-firms-2026) (updated 2026-07-13) - [Cold Email for Construction & Contractors: B2B Outreach (2026)](https://warmysender.com/blog/posts/cold-email-for-construction-contractors-2026) (updated 2026-07-13) - [Cold Email for Real Estate Agents: Templates That Convert](https://warmysender.com/blog/posts/cold-email-real-estate-agents-templates) (updated 2026-07-13) - [Cold Email for Recruiting: Sourcing Templates for Talent Acquisition (2026)](https://warmysender.com/blog/posts/cold-email-for-recruiting-talent-acquisition-2026) (updated 2026-07-13) - [Does Email Warmup Still Work in 2026?](https://warmysender.com/blog/posts/does-email-warmup-still-work-in-2026) (updated 2026-09-06) - [Does Multichannel Outreach Let You Send More?](https://warmysender.com/blog/posts/does-multichannel-outreach-let-you-send-more) (updated 2026-09-06) - [Gmail vs Outlook vs Yahoo Inbox Placement 2026: Provider-Specific Strategies](https://warmysender.com/blog/posts/gmail-vs-outlook-vs-yahoo-inbox-placement-2026) (updated 2026-07-13) - [How Email Verification Works (and Why DIY Breaks Down at Scale)](https://warmysender.com/blog/posts/how-email-verification-works-and-why-diy-fails-at-scale) (updated 2026-09-08) - [How Email Warmup Networks Work](https://warmysender.com/blog/posts/how-email-warmup-networks-work) (updated 2026-09-06) - [How Many Steps Should a Multichannel Sequence Have?](https://warmysender.com/blog/posts/how-many-steps-should-a-multichannel-sequence-have) (updated 2026-09-08) - [How to Automate Cold Email Outreach With AI Agents (Without Burning Your Domain)](https://warmysender.com/blog/posts/automate-cold-email-outreach-with-ai-agents) (updated 2026-07-25) - [How to Automate LinkedIn Outreach With AI Agents (Without Getting Your Account Banned)](https://warmysender.com/blog/posts/automate-linkedin-outreach-with-ai-agents) (updated 2026-08-10) - [How to Automate Multichannel Outreach With AI Agents (Email, LinkedIn & Instagram)](https://warmysender.com/blog/posts/automate-multichannel-outreach-with-ai-agents) (updated 2026-07-25) - [How to Avoid LinkedIn Account Restrictions in 2026](https://warmysender.com/blog/posts/how-to-avoid-linkedin-account-restrictions-2026) (updated 2026-07-13) - [How to Build a B2B Prospect List That Is Actually Worth Sending To](https://warmysender.com/blog/posts/how-to-build-a-b2b-prospect-list) (updated 2026-09-06) - [How to Build an Instagram Prospect List When There Is No Search](https://warmysender.com/blog/posts/how-to-build-an-instagram-prospect-list) (updated 2026-09-06) - [How to Connect a Terminal Coding Agent to Your Outreach Stack](https://warmysender.com/blog/posts/connect-a-terminal-coding-agent-to-your-outreach-stack) (updated 2026-09-09) - [How to Connect Your AI Agent to Your Outreach Tools with MCP](https://warmysender.com/blog/posts/connect-ai-agent-to-outreach-tools-mcp-guide) (updated 2026-08-27) - [How to Run LinkedIn Outreach With Claude](https://warmysender.com/blog/posts/how-to-run-linkedin-outreach-with-claude) (updated 2026-09-06) - [How to Use Grok Bot for Cold Email Outreach (The Safe Way)](https://warmysender.com/blog/posts/how-to-use-grok-bot-for-cold-email-outreach) (updated 2026-08-27) - [Instantly Alternatives (2026): 7 Better Options](https://warmysender.com/blog/posts/43-instantly-alternatives) (updated 2026-07-13) - [Is Cold Email Legal? A Jurisdiction-by-Jurisdiction Guide for 2026](https://warmysender.com/blog/posts/is-cold-email-legal) (updated 2026-09-06) - [Is Instagram DM Automation Allowed? What Meta's Own Rules Say](https://warmysender.com/blog/posts/is-instagram-dm-automation-allowed) (updated 2026-09-06) - [Is LinkedIn Automation Safe? An Honest Answer](https://warmysender.com/blog/posts/is-linkedin-automation-safe-an-honest-answer) (updated 2026-09-06) - [Lemlist vs Woodpecker (2026): Best for Personalization?](https://warmysender.com/blog/posts/42-lemlist-vs-woodpecker) (updated 2026-07-13) - [LinkedIn + Email Multi-Channel Outreach Strategy for 2x ROI](https://warmysender.com/blog/posts/linkedin-email-multi-channel-outreach-strategy-2026) (updated 2026-07-16) - [LinkedIn Limits in 2026: What Is Actually Published, and What Everyone Guesses](https://warmysender.com/blog/posts/linkedin-limits-what-is-published-and-what-isnt) (updated 2026-09-06) - [Mailshake vs Outreach (2026): SMB vs Enterprise](https://warmysender.com/blog/posts/45-mailshake-vs-outreach) (updated 2026-07-13) - [Meta Muse and Muse Code: What They Mean for Outbound Sales Teams](https://warmysender.com/blog/posts/meta-muse-and-muse-code-what-they-mean-for-outbound-sales-teams) (updated 2026-09-09) - [Multi-Account LinkedIn Rotation: Safe Scaling Architecture](https://warmysender.com/blog/posts/linkedin-multi-account-rotation-architecture) (updated 2026-07-13) - [OAuth vs App Passwords: Why Secure Email Authentication Matters](https://warmysender.com/blog/posts/oauth-vs-app-passwords-email-security) (updated 2026-07-13) - [Reddit for B2B Lead Generation: How to Find and Convert Prospects in 2026](https://warmysender.com/blog/posts/reddit-for-b2b-lead-generation-cold-outreach) (updated 2026-07-13) - [Reply.io vs Close CRM (2026): Which is Better?](https://warmysender.com/blog/posts/48-reply-vs-close) (updated 2026-07-13) - [Salesloft vs Outreach (2026): Enterprise Sales Engagement Platform Comparison](https://warmysender.com/blog/posts/47-salesloft-vs-outreach) (updated 2026-07-13) - [Smartlead Alternatives (2026): 7 Better Options](https://warmysender.com/blog/posts/44-smartlead-alternatives) (updated 2026-07-13) - [Smartlead vs Instantly (2026): Which Cold Email Tool is Better?](https://warmysender.com/blog/posts/41-smartlead-vs-instantly) (updated 2026-07-13) - [The One-Person Company Outreach Stack (Built on AI Agents)](https://warmysender.com/blog/posts/one-person-company-outreach-stack-ai-agents) (updated 2026-08-27) - [Top 10 Done-For-You Email Warmup & Setup Agencies](https://warmysender.com/blog/posts/150-top-10-email-warmup-agencies) (updated 2026-07-13) - [Top 10 Email Warmup-Only Services Compared (2026)](https://warmysender.com/blog/posts/103-top-10-warmup-only-services) (updated 2026-08-10) - [Top 10 Email Warmup Tools for Google Workspace Users](https://warmysender.com/blog/posts/137-top-10-email-warmup-for-gsuite) (updated 2026-07-13) - [Top 10 Tools for Warming Up Personal Gmail Accounts](https://warmysender.com/blog/posts/143-top-10-email-warmup-gmail) (updated 2026-07-13) - [Top 12 Domain Warmup Strategies & Tools (2026)](https://warmysender.com/blog/posts/129-top-12-domain-warmup) (updated 2026-07-13) - [Top 12 Email Deliverability Consulting Services (2026)](https://warmysender.com/blog/posts/135-top-12-email-deliverability) (updated 2026-07-13) - [Top 12 LinkedIn Lead Generation Tools & Strategies (2026)](https://warmysender.com/blog/posts/142-top-12-linkedin-lead-gen) (updated 2026-07-13) - [Top 12 Multichannel Sales Platforms: Email + LinkedIn + Phone (2026)](https://warmysender.com/blog/posts/104-top-12-multichannel-platforms) (updated 2026-07-13) - [Top 15 Email Sequence Builders & Drip Campaign Tools](https://warmysender.com/blog/posts/139-top-15-email-sequence-builders) (updated 2026-07-13) - [Top 15 Email Verification Tools to Reduce Bounces (2026)](https://warmysender.com/blog/posts/119-top-15-email-verification) (updated 2026-07-13) - [Top 15 Free Cold Email Tools & Trials (No Credit Card Required)](https://warmysender.com/blog/posts/106-top-15-free-cold-email-tools) (updated 2026-07-13) - [Top 15 LinkedIn Automation Tools for Sales Prospecting (2026)](https://warmysender.com/blog/posts/102-top-15-linkedin-automation) (updated 2026-07-13) - [Top 15 LinkedIn Scraping Tools for Lead Generation (2026)](https://warmysender.com/blog/posts/126-top-15-linkedin-scraping) (updated 2026-07-13) - [Top 20 Best Cold Email Tools for 2026 (Tested & Ranked)](https://warmysender.com/blog/posts/101-top-20-cold-email-tools) (updated 2026-07-13) - [Top 20 Best LinkedIn + Email Combo Tools (2026 Ultimate Guide)](https://warmysender.com/blog/posts/149-top-20-linkedin-email-combos) (updated 2026-07-13) - [Top 5 Unsubscribe & Compliance Management Tools (2026)](https://warmysender.com/blog/posts/134-top-5-unsubscribe-compliance) (updated 2026-07-13) - [Top 8 Email Spam Checkers & Content Analyzers (2026)](https://warmysender.com/blog/posts/144-top-8-email-spam-checkers) (updated 2026-07-13) - [Top 8 Email Warmup Tools for Microsoft 365 & Outlook](https://warmysender.com/blog/posts/138-top-8-outlook-warmup) (updated 2026-07-13) - [Top 8 LinkedIn Content Creation Tools for Thought Leadership](https://warmysender.com/blog/posts/131-top-8-linkedin-content-tools) (updated 2026-07-13) - [Warmup Finished But Emails Still Go to Spam](https://warmysender.com/blog/posts/warmup-finished-but-emails-still-go-to-spam) (updated 2026-09-06) - [Warmup vs Sending Limits: What Actually Caps Your Volume](https://warmysender.com/blog/posts/warmup-vs-sending-limits-what-actually-caps-your-volume) (updated 2026-09-06) - [What Mailbox Providers Actually Measure](https://warmysender.com/blog/posts/what-mailbox-providers-actually-measure) (updated 2026-09-06) - [What WhatsApp Actually Allows for Sales Outreach](https://warmysender.com/blog/posts/what-whatsapp-actually-allows-for-sales-outreach) (updated 2026-09-06) - [What Your Bounce Message Is Telling You](https://warmysender.com/blog/posts/what-your-bounce-message-is-telling-you) (updated 2026-09-06) - [Why B2B Lead Data Goes Stale (and How to Email It Without Bouncing)](https://warmysender.com/blog/posts/why-b2b-lead-data-goes-stale) (updated 2026-09-08) - [Why Cold Emails Land in Spam, and What to Check First](https://warmysender.com/blog/posts/why-cold-emails-land-in-spam-and-what-to-check-first) (updated 2026-09-06) - [Why Outlook Campaigns Run Slower Than You Set Them](https://warmysender.com/blog/posts/why-outlook-campaigns-run-slower-than-you-set-them) (updated 2026-09-06) #### AI Writing (1 articles) - [Top 5 AI Email Copywriting Tools (Beyond ChatGPT)](https://warmysender.com/blog/posts/141-top-5-email-copywriting-ai) (updated 2026-07-09) #### Advanced Strategy (1 articles) - [9 Best Cold Email Software for Intent-Based Prospecting (2026)](https://warmysender.com/blog/posts/77-intent-based-prospecting) (updated 2026-07-09) #### Agency (1 articles) - [Top 5 White-Label Cold Email Solutions for Agencies](https://warmysender.com/blog/posts/108-top-5-white-label-solutions) (updated 2026-07-09) #### Analytics (2 articles) - [Top 12 Email Analytics & Reporting Dashboards (2026)](https://warmysender.com/blog/posts/148-top-12-email-analytics) (updated 2026-07-09) - [Top 12 Email Tracking & Analytics Tools for Sales (2026)](https://warmysender.com/blog/posts/123-top-12-email-tracking) (updated 2026-07-09) #### CRM Integration (2 articles) - [Top 10 Cold Email Tools for HubSpot Users (2026)](https://warmysender.com/blog/posts/111-top-10-hubspot-integrations) (updated 2026-07-09) - [Top 20 Cold Email Tools with Salesforce Integration](https://warmysender.com/blog/posts/110-top-20-salesforce-integrations) (updated 2026-07-09) #### CRM Integration Guides (1 articles) - [Best Cold Email Tools for Pipedrive Users (2026)](https://warmysender.com/blog/posts/20-pipedrive) (updated 2026-07-13) #### Canonical Guides (1 articles) - [Top 10 Cold Email Tools for Booking Meetings (2026)](https://warmysender.com/blog/posts/50-top-10-canonical) (updated 2026-07-13) #### Cold Email (12 articles) - [AI-Powered Spam Filters in 2026: What Changed](https://warmysender.com/blog/posts/ai-powered-spam-filters-2026-what-changed) (updated 2026-07-13) - [B2B Sales Teams: Scaling Outreach Without Getting Banned](https://warmysender.com/blog/posts/b2b-sales-team-outreach-without-bans) (updated 2026-08-19) - [Cold Email Benchmarks 2026: What Good Looks Like](https://warmysender.com/blog/posts/cold-email-benchmarks-2026-what-good-looks-like) (updated 2026-03-18) - [Cold Email Deliverability Checklist 2026](https://warmysender.com/blog/posts/cold-email-deliverability-checklist-2026) (updated 2026-03-18) - [Cold Email Personalization That Beats AI Detection](https://warmysender.com/blog/posts/cold-email-personalization-beats-ai-detection-2026) (updated 2026-07-13) - [Cold Email Subject Lines That Work in 2026](https://warmysender.com/blog/posts/cold-email-subject-lines-that-work-2026) (updated 2026-08-19) - [Consulting Firms: Building Pipeline with Email + LinkedIn](https://warmysender.com/blog/posts/consulting-firms-email-linkedin-pipeline) (updated 2026-03-18) - [Domain Warming Strategy for 2026: 4-6 Week Ramp-Up Guide](https://warmysender.com/blog/posts/domain-warming-strategy-2026) (updated 2026-03-18) - [Escaping Enterprise Spam Filters (Proofpoint, Mimecast)](https://warmysender.com/blog/posts/escaping-enterprise-spam-filters-2026) (updated 2026-07-13) - [Reply Rate Optimization: From 2% to 20%](https://warmysender.com/blog/posts/reply-rate-optimization-from-2-to-20-percent-2026) (updated 2026-03-18) - [Startup Founder's Guide to Cold Outreach (Bootstrap Edition)](https://warmysender.com/blog/posts/startup-founder-cold-outreach-guide) (updated 2026-03-28) - [Top 6 AI-Powered Cold Email Platforms That Actually Work](https://warmysender.com/blog/posts/top-6-ai-cold-email-platforms) (updated 2026-08-19) #### Cold Email Strategy (41 articles) - [15 Cold Email Subject Lines That Get 50%+ Open Rates (2026 Data)](https://warmysender.com/blog/posts/cold-email-subject-lines-50-percent-open-rates) (updated 2026-08-19) - [27 First-Line Personalization Formulas That Actually Get Replies](https://warmysender.com/blog/posts/cold-email-first-line-personalization-that-works) (updated 2026-08-19) - [7 Email Warmup Mistakes That Are Killing Your Deliverability in 2026](https://warmysender.com/blog/posts/email-warmup-mistakes-killing-deliverability-2026) (updated 2026-02-08) - [AI Email Detection in 2026: How Providers Spot (and Label) AI Content](https://warmysender.com/blog/posts/ai-email-detection-how-providers-spot-ai-content) (updated 2026-08-12) - [Best Time to Send Cold Emails in 2026: Days and Hours That Maximize Opens](https://warmysender.com/blog/posts/cold-email-sending-time-best-days-hours-2026) (updated 2026-02-08) - [Buying Email Lists vs Building Your Own: Why Purchased Lists Fail in 2026](https://warmysender.com/blog/posts/buying-email-lists-vs-building-why-purchased-lists-fail) (updated 2026-02-08) - [Clay + Cold Email: How to Build an Enrichment-Powered Outreach Workflow](https://warmysender.com/blog/posts/clay-enrichment-cold-email-workflow) (updated 2026-02-08) - [Cold Email A/B Testing: What to Test First and How to Read the Results](https://warmysender.com/blog/posts/cold-email-ab-testing-what-to-test-first) (updated 2026-02-08) - [Cold Email Follow-Up Timing: When to Send Each Email for Maximum Replies](https://warmysender.com/blog/posts/cold-email-follow-up-sequence-timing-data) (updated 2026-02-08) - [Cold Email for Bootstrapped Startups: The $200/Month Outbound Playbook](https://warmysender.com/blog/posts/cold-email-for-bootstrapped-startups-budget-guide) (updated 2026-02-08) - [Cold Email for Enterprise vs SMB: The Strategy Differences That Matter](https://warmysender.com/blog/posts/cold-email-for-enterprise-vs-smb-strategy-differences) (updated 2026-02-08) - [Cold Email for Job Seekers: How to Network Your Way Into Hidden Job Opportunities](https://warmysender.com/blog/posts/cold-email-for-job-seekers-networking) (updated 2026-02-08) - [Cold Email for Service Businesses: A Guide for Plumbers, Lawyers, Dentists, and Local Pros](https://warmysender.com/blog/posts/cold-email-for-service-businesses-plumbers-lawyers-dentists) (updated 2026-02-08) - [Cold Emailing C-Suite Executives: What Actually Works in 2026](https://warmysender.com/blog/posts/cold-email-to-c-suite-executives-guide) (updated 2026-02-08) - [Cold Email Metrics: What to Track and How to Improve (2026 Guide)](https://warmysender.com/blog/posts/cold-email-metrics-what-to-track-and-how-to-improve) (updated 2026-01-27) - [Cold Email Reply Rate Benchmarks 2026: What's Actually Good?](https://warmysender.com/blog/posts/cold-email-reply-rate-benchmarks-2026) (updated 2026-07-25) - [Cold Email Reply Rates by Industry: 2026 Benchmarks for 28 Sectors](https://warmysender.com/blog/posts/cold-email-reply-rates-by-industry-2026) (updated 2026-02-08) - [Cold Email Sequences for SaaS: From Free Trial Signup to Paid Conversion](https://warmysender.com/blog/posts/cold-email-saas-free-trial-to-paid-conversion) (updated 2026-02-25) - [Cold Email Subject Line Formulas That Work in 2026 (Backed by 15M Emails)](https://warmysender.com/blog/posts/cold-email-subject-line-formulas-2026-data) (updated 2026-02-08) - [Cold Email to CRM Pipeline: How to Automatically Move Replies Into Your Sales Pipeline](https://warmysender.com/blog/posts/cold-email-crm-pipeline-integration-workflow) (updated 2026-02-08) - [Domain Age and Cold Email: How Old Should Your Domain Be Before Sending?](https://warmysender.com/blog/posts/domain-age-and-cold-email-performance) (updated 2026-02-08) - [Email List Hygiene: How to Keep Your Bounce Rate Under 2% Permanently](https://warmysender.com/blog/posts/email-list-hygiene-reduce-bounce-rate-under-2-percent) (updated 2026-02-08) - [Email Provider Deliverability Comparison: Gmail vs Outlook vs Zoho for Cold Email](https://warmysender.com/blog/posts/email-provider-deliverability-comparison-gmail-outlook-zoho) (updated 2026-02-08) - [Email Sending Infrastructure: Complete DNS and IP Setup Guide for Cold Email](https://warmysender.com/blog/posts/email-sending-infrastructure-dns-ip-setup-guide) (updated 2026-02-08) - [Email Warmup Timeline: A Day-by-Day Schedule from Setup to First Campaign](https://warmysender.com/blog/posts/email-warmup-timeline-day-by-day-schedule) (updated 2026-02-08) - [Email Warmup vs Seed Lists: What's the Real Difference and Which Do You Need?](https://warmysender.com/blog/posts/email-warmup-vs-seed-lists-real-difference) (updated 2026-02-08) - [Email Warmup While Sending Campaigns: How to Run Both Simultaneously](https://warmysender.com/blog/posts/email-warmup-while-sending-campaigns-simultaneously) (updated 2026-02-08) - [Gmail Sending Limits in 2026: Complete Guide for Cold Email (Free + Workspace)](https://warmysender.com/blog/posts/gmail-sending-limits-cold-email-2026) (updated 2026-09-03) - [Google Postmaster Tools for Cold Email: The Complete Guide to Reading Your Data](https://warmysender.com/blog/posts/google-postmaster-tools-guide-cold-email) (updated 2026-02-08) - [How Many Secondary Domains Do You Need for Cold Email? The 2026 Scaling Formula](https://warmysender.com/blog/posts/how-many-secondary-domains-cold-email) (updated 2026-08-19) - [How to Use Intent Data to Write Cold Emails That Convert at 3x the Average Rate](https://warmysender.com/blog/posts/intent-data-cold-email-playbook) (updated 2026-02-08) - [LinkedIn + Cold Email Multichannel Sequence: Templates and Timing for 2026](https://warmysender.com/blog/posts/linkedin-cold-email-sequence-multichannel-template) (updated 2026-08-19) - [Managing 50+ Inboxes for Client Cold Email Campaigns: The Agency Playbook](https://warmysender.com/blog/posts/multi-inbox-management-for-agencies) (updated 2026-02-08) - [Micro-Segmentation for Cold Email: How to Build Lists That Convert at 3x the Average](https://warmysender.com/blog/posts/micro-segmentation-cold-email-list-building) (updated 2026-02-08) - [Outlook & Microsoft 365 Sending Limits in 2026 (Full Tables + Safe Volumes)](https://warmysender.com/blog/posts/outlook-microsoft-365-sending-limits-2026) (updated 2026-07-25) - [Prompt Engineering for Cold Email: How to Use AI to Write Emails That Convert](https://warmysender.com/blog/posts/cold-email-prompt-engineering-ai-personalization) (updated 2026-02-08) - [Spintax for Cold Email: How to Create Unique Email Variations at Scale](https://warmysender.com/blog/posts/spintax-for-cold-email-unique-variations-at-scale) (updated 2026-02-08) - [The Breakup Email: How to Write a Final Follow-Up That Gets 2x the Reply Rate](https://warmysender.com/blog/posts/how-to-write-breakup-email-cold-outreach) (updated 2026-02-08) - [Video in Cold Email: Does It Actually Work? Data from 2 Million Emails](https://warmysender.com/blog/posts/video-in-cold-email-does-it-work) (updated 2026-02-08) - [Warm Email vs Cold Email: When to Use Each and How to Combine Them](https://warmysender.com/blog/posts/warm-email-vs-cold-email-when-to-use-each) (updated 2026-02-08) - [Why 50-125 Word Cold Emails Get the Highest Reply Rates (2026 Data)](https://warmysender.com/blog/posts/cold-email-50-to-125-words-why-length-matters) (updated 2026-02-08) #### Cold Email Strategy & Best Practices (1 articles) - [Startup Founder Outreach: Connecting with Investors](https://warmysender.com/blog/posts/startup-founder-outreach-connecting-with-investors) (updated 2026-01-27) #### Cold Email Strategy & Campaigns (1 articles) - [Prospect Research: Finding the Right Contacts to Target](https://warmysender.com/blog/posts/prospect-research-finding-right-contacts-to-target) (updated 2026-03-20) #### Cold Email Tools (9 articles) - [Best Budget Cold Email Tools (Under $50/Month) (2026)](https://warmysender.com/blog/posts/31-budget-tools) (updated 2026-07-09) - [Best Cold Email Tools for Freelancers (2026)](https://warmysender.com/blog/posts/06-freelancers) (updated 2026-07-24) - [Best Cold Email Tools for Hardware & Manufacturing Sales (2026)](https://warmysender.com/blog/posts/12-hardware-manufacturing) (updated 2026-08-19) - [Best Cold Email Tools for High-Ticket Consultants (2026)](https://warmysender.com/blog/posts/07-high-ticket-consultants) (updated 2026-07-13) - [Best Cold Email Tools for Local Service Businesses (2026)](https://warmysender.com/blog/posts/14-local-services) (updated 2026-07-13) - [Best Cold Email Tools for Non-Profits (2026)](https://warmysender.com/blog/posts/09-non-profits) (updated 2026-07-13) - [Best Cold Email Tools for Salesforce Teams (2026)](https://warmysender.com/blog/posts/19-salesforce) (updated 2026-07-13) - [Best Cold Email Tools for SEO Agencies (2026)](https://warmysender.com/blog/posts/10-seo-agencies) (updated 2026-07-24) - [Best Cold Email Tools with Custom SMTP Support (2026)](https://warmysender.com/blog/posts/24-custom-smtp) (updated 2026-07-13) #### Cold Email for B2B (1 articles) - [Healthcare B2B Sales Compliance: HIPAA-Compliant Email Outreach](https://warmysender.com/blog/posts/healthcare-b2b-sales-compliance-hipaa-email-outreach) (updated 2026-01-27) #### Comparison (26 articles) - [10 Best Lemlist Alternatives for High-Volume Senders (2026)](https://warmysender.com/blog/posts/63-lemlist-alternatives-volume) (updated 2026-07-09) - [10 Best Mailshake Alternatives for LinkedIn + Email Campaigns (2026)](https://warmysender.com/blog/posts/66-mailshake-alternatives-linkedin) (updated 2026-07-09) - [8 Best QuickMail Alternatives for API Integrations (2026)](https://warmysender.com/blog/posts/67-quickmail-alternatives-api) (updated 2026-07-09) - [8 Best Woodpecker Alternatives for Multi-Channel Outreach (2026)](https://warmysender.com/blog/posts/64-woodpecker-alternatives) (updated 2026-07-09) - [9 Best GMass Alternatives for Enterprise Teams (2026)](https://warmysender.com/blog/posts/65-gmass-alternatives-enterprise) (updated 2026-07-09) - [9 Best Reply.io Alternatives for Budget-Conscious Teams (2026)](https://warmysender.com/blog/posts/68-reply-alternatives-budget) (updated 2026-07-09) - [Folderly vs Mailivery vs WarmySender: Deliverability Tool Comparison (2026)](https://warmysender.com/blog/posts/91-folderly-vs-mailivery) (updated 2026-07-09) - [Instantly vs Apollo (2026): Cold Email Tool vs All-in-One Sales Platform](https://warmysender.com/blog/posts/instantly-vs-apollo-2026) (updated 2026-07-25) - [Instantly vs Lemlist (2026): Honest Comparison for Cold Email Teams](https://warmysender.com/blog/posts/instantly-vs-lemlist-2026) (updated 2026-07-25) - [Instantly vs Smartlead for Agency White-Label Solutions (2026)](https://warmysender.com/blog/posts/97-instantly-vs-smartlead-agencies) (updated 2026-07-09) - [Lemlist vs Woodpecker for Solopreneurs & Freelancers (2026)](https://warmysender.com/blog/posts/99-lemlist-vs-woodpecker-solo) (updated 2026-07-09) - [Lemwarm vs Mailreach vs WarmySender: Which Warmup Tool is Best? (2026)](https://warmysender.com/blog/posts/89-lemwarm-vs-mailreach) (updated 2026-07-09) - [Lemwarm vs Warmup Inbox (2026): Email Warmup Tools Head-to-Head](https://warmysender.com/blog/posts/lemwarm-vs-warmup-inbox-2026) (updated 2026-08-10) - [Reply.io vs Outreach for Enterprise Sales Teams (2026)](https://warmysender.com/blog/posts/98-reply-vs-outreach-enterprise) (updated 2026-07-09) - [Smartlead vs Lemlist (2026): Which Cold Email Platform Fits Your Team?](https://warmysender.com/blog/posts/smartlead-vs-lemlist-2026) (updated 2026-07-25) - [Top 8 Mailreach Alternatives in 2026 (Tested Criteria, Honest Verdicts)](https://warmysender.com/blog/posts/mailreach-alternatives-2026) (updated 2026-09-03) - [Top 8 Warmbox Alternatives for 2026 (Compared on Price & Results)](https://warmysender.com/blog/posts/warmbox-alternatives-2026) (updated 2026-09-03) - [TrulyInbox vs Warmbox vs WarmySender: Email Warmup Tools Compared (2026)](https://warmysender.com/blog/posts/90-trulyinbox-vs-warmbox) (updated 2026-07-09) - [Warmy.io Alternatives: The 8 Best Tools for 2026](https://warmysender.com/blog/posts/warmy-io-alternatives-2026) (updated 2026-08-10) - [WarmySender vs Cirrus Insight for Salesforce Integration (2026)](https://warmysender.com/blog/posts/96-warmysender-vs-cirrus) (updated 2026-07-09) - [WarmySender vs Mailmeteor for Gmail Users (2026)](https://warmysender.com/blog/posts/93-warmysender-vs-mailmeteor) (updated 2026-07-09) - [WarmySender vs Mixmax for Sales Productivity (2026)](https://warmysender.com/blog/posts/95-warmysender-vs-mixmax) (updated 2026-07-09) - [WarmySender vs Overloop (Reply.io Rebrand) - Which is Better? (2026)](https://warmysender.com/blog/posts/92-warmysender-vs-overloop) (updated 2026-07-09) - [WarmySender vs Warmy.io (2026): An Honest Comparison](https://warmysender.com/blog/posts/warmysender-vs-warmy-io-comparison-2026) (updated 2026-08-10) - [WarmySender vs Yesware for Outlook Teams (2026)](https://warmysender.com/blog/posts/94-warmysender-vs-yesware) (updated 2026-07-09) - [Warmy vs Lemwarm (2026): Which Email Warmup Tool Wins?](https://warmysender.com/blog/posts/warmy-vs-lemwarm-2026) (updated 2026-09-03) #### Compliance (1 articles) - [Top 8 GDPR-Compliant Cold Email Tools for EU Markets](https://warmysender.com/blog/posts/112-top-8-gdpr-compliant-tools) (updated 2026-07-09) #### Data Enrichment (1 articles) - [Top 10 B2B Lead Enrichment Tools for Cold Email (2026)](https://warmysender.com/blog/posts/120-top-10-lead-enrichment) (updated 2026-07-09) #### Data Sources (1 articles) - [Top 20 B2B Email Data Providers & Lead Databases (2026)](https://warmysender.com/blog/posts/136-top-20-email-data-providers) (updated 2026-07-09) #### Deliverability (3 articles) - [8 Best Email Warmup Tools with AI Spam Detection (2026)](https://warmysender.com/blog/posts/78-ai-spam-detection) (updated 2026-07-09) - [Top 10 Blacklist Monitoring & Recovery Tools (2026)](https://warmysender.com/blog/posts/117-top-10-blacklist-monitoring) (updated 2026-07-09) - [Top 8 Inbox Placement Testing Tools for Deliverability (2026)](https://warmysender.com/blog/posts/105-top-8-inbox-placement-tools) (updated 2026-07-09) #### Design (1 articles) - [Top 5 Email Design Tools for Cold Outreach (2026)](https://warmysender.com/blog/posts/128-top-5-email-design-tools) (updated 2026-07-09) #### Developer (1 articles) - [Top 12 API-First Email Platforms for Custom Integrations](https://warmysender.com/blog/posts/109-top-12-api-first-platforms) (updated 2026-07-09) #### EdTech Sales (1 articles) - [Best Cold Email Software for EdTech Sales Teams (2026)](https://warmysender.com/blog/posts/52-edtech-sales) (updated 2026-07-13) #### Email Authentication (2 articles) - [Email Deliverability Audit: The DIY Checklist to Find and Fix Your Inbox Issues](https://warmysender.com/blog/posts/email-deliverability-audit-checklist-diy) (updated 2026-02-08) - [Microsoft Outlook Bulk Sender Rules 2026: What Changed and How to Comply](https://warmysender.com/blog/posts/microsoft-outlook-bulk-sender-rules-2026) (updated 2026-09-03) #### Email Compliance (2 articles) - [Cold Email Legal Guide: What's Allowed in the US, EU, UK, and Canada in 2026](https://warmysender.com/blog/posts/cold-email-legal-guide-us-eu-uk-canada-2026) (updated 2026-02-08) - [How to Keep Your Spam Complaint Rate Below 0.3%: The Complete Playbook](https://warmysender.com/blog/posts/cold-email-spam-complaint-rate-below-point-3-percent) (updated 2026-02-08) #### Email Deliverability (16 articles) - [Bounce Shield Technology: Protecting Your Sender Reputation](https://warmysender.com/blog/posts/bounce-shield-technology-explained) (updated 2026-08-19) - [Can AI Agents Send Cold Email Safely? (What Actually Burns Domains)](https://warmysender.com/blog/posts/can-ai-agents-send-cold-email-safely) (updated 2026-08-27) - [Deliverability Monitoring: Under the Hood](https://warmysender.com/blog/posts/real-time-deliverability-monitoring-system) (updated 2026-08-12) - [DMARC Enforcement 2026: Gmail & Yahoo's Strict New Rules Explained](https://warmysender.com/blog/posts/dmarc-enforcement-gmail-yahoo-2026) (updated 2026-08-19) - [Email Blacklist Check and Removal: Complete Guide for 2026](https://warmysender.com/blog/posts/blacklist-check-and-removal-guide-2026) (updated 2026-02-08) - [Email Deliverability Consultants: Cost and When to Hire One](https://warmysender.com/blog/posts/email-deliverability-consultant-vs-software-2026) (updated 2026-08-10) - [Email Deliverability Services Compared: Agencies, Consultants, Tools (2026 Guide)](https://warmysender.com/blog/posts/email-deliverability-services-compared-2026) (updated 2026-07-25) - [Email Domain Warming: The Complete 2026 Guide (Timeline + Daily Schedule)](https://warmysender.com/blog/posts/email-domain-warming-guide-2026) (updated 2026-07-25) - [Email Warmup in 2026: Why It's Absolutely Non-Negotiable](https://warmysender.com/blog/posts/email-warmup-non-negotiable-2026) (updated 2026-08-19) - [Email Warmup Not Working? Why You're Still Landing in Spam](https://warmysender.com/blog/posts/email-warmup-not-working-why-still-spam) (updated 2026-08-10) - [How We Achieve 95%+ Inbox Placement (Technical Methodology)](https://warmysender.com/blog/posts/achieving-95-percent-inbox-placement) (updated 2026-08-19) - [One-Click Unsubscribe: How to Implement Google and Yahoo's 2024 Requirement](https://warmysender.com/blog/posts/google-yahoo-one-click-unsubscribe-implementation) (updated 2026-09-03) - [The January 2026 Gmail Outage: Critical Lessons for Email Senders](https://warmysender.com/blog/posts/gmail-january-2026-outage-lessons) (updated 2026-03-21) - [The Science Behind Reputation-Aware Email Warmup Algorithms](https://warmysender.com/blog/posts/reputation-aware-email-warmup-algorithm) (updated 2026-03-21) - [Why Do My Emails Go to Spam? 14 Reasons and Exact Fixes (2026)](https://warmysender.com/blog/posts/why-emails-go-to-spam-2026) (updated 2026-09-03) - [Why Email Open Rates Are Unreliable in 2026 (And What Metrics to Track Instead)](https://warmysender.com/blog/posts/email-open-rates-unreliable-2026-what-to-track-instead) (updated 2026-09-03) #### Email Deliverability & Authentication (2 articles) - [Microsoft 365 Deliverability: Reaching Outlook Inboxes](https://warmysender.com/blog/posts/microsoft-365-deliverability-reaching-outlook-inboxes) (updated 2026-08-19) - [The Hidden Cost of Bad Email Deliverability](https://warmysender.com/blog/posts/hidden-cost-bad-email-deliverability) (updated 2026-05-07) #### Email Deliverability & Reputation (1 articles) - [Email Blacklists: How to Check, Avoid, and Remove Your Domain](https://warmysender.com/blog/posts/email-blacklists-check-avoid-remove-domain) (updated 2026-08-19) #### Email Marketing (1 articles) - [AI Personalization in Cold Email: What Actually Works (Tested)](https://warmysender.com/blog/posts/ai-personalization-cold-email-what-works) (updated 2026-08-19) #### Email Warmup (10 articles) - [Dedicated IP Warmup vs Shared IP: Which to Choose](https://warmysender.com/blog/posts/dedicated-ip-vs-shared-ip-warmup-2026) (updated 2026-03-18) - [Email Warmup Before & After: Real Inbox Placement Data from 500+ Domains](https://warmysender.com/blog/posts/email-warmup-before-after-inbox-placement-data) (updated 2026-02-08) - [Email Warmup Explained: Complete 2026 Guide](https://warmysender.com/blog/posts/email-warmup-explained-complete-guide-2026) (updated 2026-03-18) - [Email Warmup for Multiple Mailboxes: Best Practices](https://warmysender.com/blog/posts/email-warmup-multiple-mailboxes-best-practices-2026) (updated 2026-07-13) - [Email Warmup for Transactional Domains: Why Your Order Confirmations Land in Spam](https://warmysender.com/blog/posts/email-warmup-for-transactional-email-domains) (updated 2026-02-08) - [Email Warmup ROI Calculator: Is It Worth It?](https://warmysender.com/blog/posts/email-warmup-roi-calculator-2026) (updated 2026-03-18) - [Gmail Warmup vs Outlook Warmup: Key Differences](https://warmysender.com/blog/posts/gmail-warmup-vs-outlook-warmup-2026) (updated 2026-03-18) - [How Long Does Email Warmup Take in 2026?](https://warmysender.com/blog/posts/how-long-does-email-warmup-take-2026) (updated 2026-03-18) - [How Long Does Email Warmup Take? Real Timelines for 2026](https://warmysender.com/blog/posts/how-long-does-email-warmup-take) (updated 2026-07-25) - [Top 5 Email Warmup Tools for New Domains (Start Right)](https://warmysender.com/blog/posts/top-5-email-warmup-new-domains) (updated 2026-03-21) #### Enterprise (1 articles) - [Top 10 Enterprise Cold Email Platforms (500+ Users)](https://warmysender.com/blog/posts/107-top-10-enterprise-email-platforms) (updated 2026-07-09) #### Enterprise SEP (1 articles) - [Top 10 Sales Engagement Platforms (Outreach vs Salesloft)](https://warmysender.com/blog/posts/140-top-10-sales-engagement) (updated 2026-07-09) #### Feature-Specific Guides (2 articles) - [Best Cold Email Tools with A/B Testing (2026)](https://warmysender.com/blog/posts/39-ab-testing) (updated 2026-07-13) - [Best Cold Email Tools with Phone Integration (2026)](https://warmysender.com/blog/posts/28-phone-integration) (updated 2026-07-13) #### Fintech Sales (1 articles) - [10 Best Cold Email Tools for Fintech & Banking Sales (2026)](https://warmysender.com/blog/posts/54-fintech-banking) (updated 2026-07-09) #### Healthcare Recruiting (1 articles) - [Best Cold Email Tools for Healthcare Recruiters in 2026](https://warmysender.com/blog/posts/51-healthcare-recruiters) (updated 2026-07-13) #### High Volume (1 articles) - [Top 10 Unlimited Email Sending Platforms (No Volume Caps)](https://warmysender.com/blog/posts/114-top-10-unlimited-sending) (updated 2026-07-09) #### Hyper-Personalization (1 articles) - [Top 10 Advanced Email Personalization Tools (2026)](https://warmysender.com/blog/posts/146-top-10-email-personalization) (updated 2026-07-09) #### Inbox Management (1 articles) - [Top 10 Reply Management Tools for High-Volume Outreach](https://warmysender.com/blog/posts/133-top-10-reply-management) (updated 2026-07-09) #### Industry Guides (3 articles) - [E-commerce Supplier Outreach: Cold Email That Works](https://warmysender.com/blog/posts/ecommerce-supplier-outreach-strategy) (updated 2026-03-21) - [Financial Services Cold Email: Compliance-First Strategy](https://warmysender.com/blog/posts/financial-services-cold-email-compliance) (updated 2026-03-21) - [Marketing Agencies: White-Label Email Warmup for Clients](https://warmysender.com/blog/posts/marketing-agency-white-label-warmup) (updated 2026-03-21) #### Industry Vertical (1 articles) - [7 Best Email Warmup Tools for Legal Services & Law Firms (2026)](https://warmysender.com/blog/posts/53-legal-services) (updated 2026-07-09) #### Infrastructure (1 articles) - [Top 8 SMTP Providers for Cold Email Campaigns (2026)](https://warmysender.com/blog/posts/118-top-8-smtp-providers) (updated 2026-07-09) #### Integration Guides (3 articles) - [Best Cold Email Tools for HubSpot Users (2026)](https://warmysender.com/blog/posts/18-hubspot) (updated 2026-08-19) - [Best Cold Email Tools for Zoho CRM Users (2026)](https://warmysender.com/blog/posts/23-zoho-crm) (updated 2026-08-19) - [Best Cold Email Tools with API/Webhook Integrations (2026)](https://warmysender.com/blog/posts/25-api-webhooks) (updated 2026-07-13) #### Intent Data (1 articles) - [Top 8 Intent Data Providers for Email Prospecting (2026)](https://warmysender.com/blog/posts/125-top-8-intent-data-providers) (updated 2026-07-09) #### Investor Relations (1 articles) - [8 Best Cold Email Platform for Investor Relations & Fundraising (2026)](https://warmysender.com/blog/posts/62-investor-relations) (updated 2026-07-09) #### Lead Generation (1 articles) - [Top 10 B2B Lead Generation Tools for Outbound Sales (2026)](https://warmysender.com/blog/posts/top-10-b2b-lead-generation-tools) (updated 2026-07-09) #### LinkedIn (5 articles) - [Cloud vs Browser Extension LinkedIn Tools: Safety Showdown](https://warmysender.com/blog/posts/cloud-vs-browser-linkedin-tools-comparison) (updated 2026-08-19) - [LinkedIn Prospecting for Recruiters: Best Practices 2026](https://warmysender.com/blog/posts/linkedin-prospecting-recruiters-2026) (updated 2026-03-21) - [LinkedIn Rate Limiting Deep Dive: The Math Behind Safe Automation](https://warmysender.com/blog/posts/linkedin-rate-limiting-technical-breakdown) (updated 2026-07-13) - [LinkedIn's New Automation Detection (How to Stay Safe in 2026)](https://warmysender.com/blog/posts/linkedin-automation-detection-2026) (updated 2026-03-21) - [Not Getting LinkedIn Connection Accepts? Fix Your Approach](https://warmysender.com/blog/posts/linkedin-connection-accepts-low-fix) (updated 2026-03-21) #### LinkedIn Automation & Outreach (1 articles) - [LinkedIn Content Strategy for SDRs/AEs: Build Authority & Generate Leads](https://warmysender.com/blog/posts/linkedin-content-strategy-sdrs-aes) (updated 2026-07-09) #### LinkedIn Marketing (1 articles) - [LinkedIn Sales Navigator vs Basic: Complete ROI Analysis 2026](https://warmysender.com/blog/posts/linkedin-sales-navigator-vs-basic-roi) (updated 2026-08-19) #### LinkedIn Outreach (24 articles) - [Building LinkedIn Audiences for Outreach: Step-by-Step Guide](https://warmysender.com/blog/posts/building-linkedin-audiences-for-outreach-2026) (updated 2026-03-25) - [How to Personalize LinkedIn Outreach at Scale Without Sounding Robotic](https://warmysender.com/blog/posts/linkedin-personalization-at-scale-2026) (updated 2026-03-18) - [LinkedIn Automation Tools Comparison 2026: Top 15 Tools Rated](https://warmysender.com/blog/posts/linkedin-automation-tools-comparison-2026) (updated 2026-08-19) - [LinkedIn Connection Request Best Practices 2026](https://warmysender.com/blog/posts/linkedin-connection-request-best-practices-2026) (updated 2026-03-18) - [LinkedIn Connection Request Limits in 2026 (And How to Work Within Them Safely)](https://warmysender.com/blog/posts/linkedin-connection-request-limits-2026) (updated 2026-08-10) - [LinkedIn Engagement-First Strategy: Beyond Connection Requests](https://warmysender.com/blog/posts/linkedin-engagement-first-strategy-2026) (updated 2026-03-18) - [LinkedIn InMail vs Connection Message: Which to Use](https://warmysender.com/blog/posts/linkedin-inmail-vs-connection-message-2026) (updated 2026-08-10) - [LinkedIn InMail vs Email Outreach: Cost and Scale](https://warmysender.com/blog/posts/linkedin-inmail-vs-email-outreach-2026) (updated 2026-08-10) - [LinkedIn Multi-Touch Sequences That Convert in 2026](https://warmysender.com/blog/posts/linkedin-multi-touch-sequences-that-convert-2026) (updated 2026-03-18) - [LinkedIn Outreach for B2B SaaS: Complete Playbook](https://warmysender.com/blog/posts/linkedin-outreach-for-b2b-saas-2026) (updated 2026-03-18) - [LinkedIn Outreach Metrics That Matter in 2026](https://warmysender.com/blog/posts/linkedin-outreach-metrics-that-matter-2026) (updated 2026-03-18) - [LinkedIn Profile Optimization for Outreach Success](https://warmysender.com/blog/posts/linkedin-profile-optimization-for-outreach-2026) (updated 2026-03-18) - [LinkedIn Sales Navigator vs Recruiter (2026): Features, Pricing, Which to Buy](https://warmysender.com/blog/posts/sales-navigator-vs-recruiter-comparison-2026) (updated 2026-08-10) - [LinkedIn Sales Navigator vs Recruiter vs Premium 2026](https://warmysender.com/blog/posts/linkedin-sales-navigator-vs-recruiter-vs-premium-2026) (updated 2026-03-25) - [LinkedIn Voice Messages: Do They Work in 2026?](https://warmysender.com/blog/posts/linkedin-voice-messages-do-they-work-2026) (updated 2026-03-18) - [WarmySender vs Dripify: Built-in Safety Caps vs Manual Limits](https://warmysender.com/blog/posts/warmysender-vs-dripify-linkedin-safety-2026) (updated 2026-08-19) - [WarmySender vs Expandi: The Unified Inbox Advantage](https://warmysender.com/blog/posts/warmysender-vs-expandi-unified-inbox-2026) (updated 2026-07-13) - [WarmySender vs Instantly: Why Multi-Account Rotation Matters](https://warmysender.com/blog/posts/warmysender-vs-instantly-multi-account-linkedin-2026) (updated 2026-08-19) - [WarmySender vs Lemlist for LinkedIn Outreach (2026)](https://warmysender.com/blog/posts/warmysender-vs-lemlist-linkedin-outreach-2026) (updated 2026-07-25) - [WarmySender vs LinkedHelper: Cloud vs Browser Extension Safety](https://warmysender.com/blog/posts/warmysender-vs-linkedhelper-cloud-safety-2026) (updated 2026-08-19) - [WarmySender vs Phantombuster: Sales Navigator Integration](https://warmysender.com/blog/posts/warmysender-vs-phantombuster-sales-navigator-2026) (updated 2026-08-19) - [WarmySender vs Reply.io: Flexible Seat Pricing for LinkedIn](https://warmysender.com/blog/posts/warmysender-vs-reply-io-linkedin-seat-pricing-2026) (updated 2026-07-13) - [WarmySender vs Skylead: Multi-Channel Sequence Coordination](https://warmysender.com/blog/posts/warmysender-vs-skylead-multi-channel-sequences-2026) (updated 2026-03-25) - [WarmySender vs Waalaxy: Email Warmup + LinkedIn Combo](https://warmysender.com/blog/posts/warmysender-vs-waalaxy-email-warmup-integration-2026) (updated 2026-07-25) #### LinkedIn Outreach & Prospecting (1 articles) - [LinkedIn Connection Request Templates That Get Accepted](https://warmysender.com/blog/posts/linkedin-connection-request-templates-that-get-accepted) (updated 2026-07-24) #### Manufacturing Sales (1 articles) - [8 Best Email Outreach Tools for Manufacturing & Industrial Sales (2026)](https://warmysender.com/blog/posts/55-manufacturing-industrial) (updated 2026-07-09) #### Marketing Ops (1 articles) - [8 Best Cold Email Software for Marketing Operations (2026)](https://warmysender.com/blog/posts/60-marketing-ops) (updated 2026-07-09) #### Meeting Booking (1 articles) - [Top 5 Calendar Automation Tools for Demo Booking (2026)](https://warmysender.com/blog/posts/122-top-5-calendar-automation) (updated 2026-07-09) #### Mobile (1 articles) - [Top 12 Cold Email Tools with Mobile Apps (iOS & Android)](https://warmysender.com/blog/posts/116-top-12-mobile-apps) (updated 2026-07-09) #### Multi-Channel Outreach & Sequencing (1 articles) - [Sequencing Email and LinkedIn: Timing Best Practices](https://warmysender.com/blog/posts/sequencing-email-linkedin-timing-best-practices) (updated 2026-05-07) #### Multichannel Outreach (1 articles) - [LinkedIn Profile Optimization for Cold Outreach: Your Profile Is Your Landing Page](https://warmysender.com/blog/posts/linkedin-profile-optimization-for-cold-outreach) (updated 2026-02-08) #### Nonprofit Fundraising (1 articles) - [9 Best Cold Email Tools for Nonprofit Fundraising Teams (2026)](https://warmysender.com/blog/posts/56-nonprofit-fundraising) (updated 2026-07-09) #### Optimization (1 articles) - [Top 10 A/B Testing Platforms for Email Campaigns (2026)](https://warmysender.com/blog/posts/124-top-10-ab-testing-platforms) (updated 2026-07-09) #### Outcome-Based (6 articles) - [10 Best Cold Email Tools for Demo Booking & Calendar Automation (2026)](https://warmysender.com/blog/posts/80-demo-booking) (updated 2026-07-09) - [10 Best Email Outreach Tools for Customer Win-Back Campaigns (2026)](https://warmysender.com/blog/posts/85-customer-winback) (updated 2026-07-09) - [8 Best Email Outreach Software for Partnership Development (2026)](https://warmysender.com/blog/posts/81-partnership-outreach) (updated 2026-07-09) - [8 Best Email Warmup Tools for Media Relations & PR Outreach (2026)](https://warmysender.com/blog/posts/83-media-pr-outreach) (updated 2026-07-09) - [9 Best Cold Email Platform for Investor Outreach & Capital Raising (2026)](https://warmysender.com/blog/posts/82-investor-outreach) (updated 2026-07-09) - [9 Best Cold Email Software for Event Registration & Webinar Promotion (2026)](https://warmysender.com/blog/posts/84-event-webinar) (updated 2026-07-09) #### Partnership Development (1 articles) - [7 Best Email Warmup Tools for Partnerships & Business Development (2026)](https://warmysender.com/blog/posts/61-partnerships-bd) (updated 2026-07-09) #### Persona-Specific (2 articles) - [Best Cold Email Tools for B2B Ecommerce: Complete 2026 Guide](https://warmysender.com/blog/posts/08-b2b-ecommerce) (updated 2026-07-25) - [Best Cold Email Tools for Recruiters (2026)](https://warmysender.com/blog/posts/04-recruiters) (updated 2026-08-19) #### Persona-Specific Guides (11 articles) - [Best Cold Email Tools for Agencies: Complete 2026 Guide (10,000+ Words)](https://warmysender.com/blog/posts/01-agencies) (updated 2026-08-19) - [Best Cold Email Tools for Appointment Setters (2026)](https://warmysender.com/blog/posts/40-appointment-setters) (updated 2026-08-19) - [Best Cold Email Tools for Clay Power Users (2026)](https://warmysender.com/blog/posts/21-clay-power-users) (updated 2026-08-19) - [Best Cold Email Tools for Event Organizers (2026)](https://warmysender.com/blog/posts/13-event-organizers) (updated 2026-08-19) - [Best Cold Email Tools for Google Workspace Users (2026)](https://warmysender.com/blog/posts/16-google-workspace) (updated 2026-07-13) - [Best Cold Email Tools for Insurance Agents (2026): Complete Guide](https://warmysender.com/blog/posts/11-insurance-agents) (updated 2026-08-19) - [Best Cold Email Tools for Low Volume, High Personalization (2026)](https://warmysender.com/blog/posts/33-low-volume-high-personalization) (updated 2026-07-13) - [Best Cold Email Tools for Multi-Domain Senders (2026)](https://warmysender.com/blog/posts/26-multi-domain) (updated 2026-08-19) - [Best Cold Email Tools for Partnership/BD Teams (2026)](https://warmysender.com/blog/posts/15-partnership-bd) (updated 2026-07-13) - [Best Cold Email Tools with Team Collaboration (2026)](https://warmysender.com/blog/posts/38-team-collaboration) (updated 2026-07-24) - [The Complete Guide to Cold Email Tools for Real Estate Professionals (2026)](https://warmysender.com/blog/posts/05-real-estate) (updated 2026-07-13) #### Personalization (1 articles) - [Top 5 Video Email Tools for Personalized Outreach (2026)](https://warmysender.com/blog/posts/115-top-5-video-email-tools) (updated 2026-07-09) #### Pharmaceutical Sales (1 articles) - [8 Best Email Warmup for Pharmaceutical & Medical Device Sales (2026)](https://warmysender.com/blog/posts/57-pharmaceutical-medical) (updated 2026-07-09) #### Phone Integration (1 articles) - [Top 15 Tools Combining Cold Email + Cold Calling](https://warmysender.com/blog/posts/145-top-15-cold-calling-integration) (updated 2026-07-09) #### Productivity (1 articles) - [Top 20 Chrome Extensions for Cold Email Prospecting](https://warmysender.com/blog/posts/121-top-20-chrome-extensions) (updated 2026-07-09) #### Re-Engagement (1 articles) - [Top 5 Email Retargeting & Re-Engagement Tools (2026)](https://warmysender.com/blog/posts/147-top-5-email-retargeting) (updated 2026-07-09) #### Revenue Operations (1 articles) - [9 Best Email Outreach Platform for RevOps Teams (2026)](https://warmysender.com/blog/posts/59-revops-teams) (updated 2026-07-09) #### SDR Management (1 articles) - [10 Best Cold Email Tools for SDR Managers & Team Leads (2026)](https://warmysender.com/blog/posts/58-sdr-managers) (updated 2026-07-09) #### Sales Strategy (1 articles) - [Multi-Channel Outreach: The Email + LinkedIn Strategy Winning in 2026](https://warmysender.com/blog/posts/multi-channel-outreach-email-linkedin-strategy) (updated 2026-03-21) #### Sales Strategy & Financial Services (1 articles) - [FinTech Sales: Cold Outreach in a Regulated Industry](https://warmysender.com/blog/posts/fintech-sales-cold-outreach-regulated-industry) (updated 2026-05-07) #### Sales Technology (2 articles) - [Autonomous AI SDRs vs Human SDRs: A Realistic Comparison for 2026](https://warmysender.com/blog/posts/autonomous-ai-sdr-vs-human-sdr-comparison) (updated 2026-02-08) - [How to Get Your B2B Brand Cited by ChatGPT, Perplexity, and Google AI Overviews in 2026](https://warmysender.com/blog/posts/geo-visibility-b2b-brands-ai-citations) (updated 2026-08-19) #### Scale-Focused Guides (1 articles) - [Best High-Volume Cold Email Tools (100k+ Emails/Month) (2026)](https://warmysender.com/blog/posts/32-high-volume) (updated 2026-07-13) #### Strategy & Outcomes (2 articles) - [10 Best AI-Powered Cold Email Tools with Hyper-Personalization (2026)](https://warmysender.com/blog/posts/76-ai-personalization) (updated 2026-07-09) - [9 Best Cold Email Platform for GPT-4 Integration & Dynamic Content (2026)](https://warmysender.com/blog/posts/79-gpt4-integration) (updated 2026-07-09) #### Tech Stack (7 articles) - [10 Best Cold Email Tools for ZoomInfo Users (2026)](https://warmysender.com/blog/posts/69-zoominfo-users) (updated 2026-07-09) - [10 Best Email Warmup for Recruiting ATS Systems - Greenhouse & Lever (2026)](https://warmysender.com/blog/posts/74-recruiting-ats) (updated 2026-07-09) - [8 Best Cold Email Platform for Nonprofit CRMs - Bloomerang & DonorPerfect (2026)](https://warmysender.com/blog/posts/75-nonprofit-crms) (updated 2026-07-09) - [8 Best Email Outreach Tools for BuiltWith Lead Gen (2026)](https://warmysender.com/blog/posts/72-builtwith-leadgen) (updated 2026-07-09) - [8 Best Email Warmup Tools for Lusha Data Enrichment (2026)](https://warmysender.com/blog/posts/70-lusha-enrichment) (updated 2026-07-09) - [9 Best Cold Email Platform for Clearbit Enrichment Users (2026)](https://warmysender.com/blog/posts/71-clearbit-users) (updated 2026-07-09) - [9 Best Cold Email Tools for Real Estate CRMs - Follow Up Boss & BoomTown (2026)](https://warmysender.com/blog/posts/73-real-estate-crms) (updated 2026-07-09) #### Technical Challenges (3 articles) - [10 Best Email Platform for SPF/DKIM Compliance & Deliverability Recovery (2026)](https://warmysender.com/blog/posts/88-spf-dkim-compliance) (updated 2026-07-09) - [8 Best Email Warmup Tools for Blacklist Recovery (2026)](https://warmysender.com/blog/posts/86-blacklist-recovery) (updated 2026-07-09) - [9 Best Cold Email Software for Multi-Domain Reputation Management (2026)](https://warmysender.com/blog/posts/87-multi-domain-reputation) (updated 2026-07-09) #### Technical Infrastructure (1 articles) - [Scaling Email Infrastructure: How We Handle 1M+ Emails Monthly](https://warmysender.com/blog/posts/email-infrastructure-scaling-million-emails) (updated 2026-07-13) #### Technical Setup (1 articles) - [Top 10 Email Authentication Tools (SPF/DKIM/DMARC Setup)](https://warmysender.com/blog/posts/130-top-10-email-authentication) (updated 2026-07-09) #### Templates (1 articles) - [Top 10 Cold Email Template Libraries & Resources (2026)](https://warmysender.com/blog/posts/127-top-10-email-templates) (updated 2026-07-09) #### Tool Migration Guides (1 articles) - [QuickMail vs GMass (2026): Gmail-Native Tools Comparison](https://warmysender.com/blog/posts/49-quickmail-vs-gmass) (updated 2026-08-19) #### Troubleshooting (1 articles) - [Email Bounce Rate Over 5%? Your Emergency Recovery Plan](https://warmysender.com/blog/posts/email-bounce-rate-over-5-percent-recovery) (updated 2026-03-21) #### Uncategorized (25 articles) - [A/B Testing Cold Emails: Framework & Statistical Significance Calculator](https://warmysender.com/blog/posts/ab-testing-cold-emails-framework-statistical-significance) (updated 2026-01-27) - [Best Cold Email Tools for Agencies: Top 7 Compared 2026](https://warmysender.com/blog/posts/best-cold-email-tools-for-agencies-top-7-compared) (updated 2026-08-19) - [Cold Email Length: Does Shorter or Longer Work Better?](https://warmysender.com/blog/posts/cold-email-length-optimal-word-count) (updated 2026-03-21) - [Dedicated IP vs. Shared IP for Cold Email: Do You Need One?](https://warmysender.com/blog/posts/dedicated-ip-vs-shared-ip-cold-email) (updated 2026-01-27) - [Email Bounce Rate: What's Normal & How to Fix High Bounces](https://warmysender.com/blog/posts/email-bounce-rate-good-benchmarks-how-to-fix) (updated 2026-03-20) - [Email Engagement Metrics That Affect Deliverability](https://warmysender.com/blog/posts/email-engagement-metrics-affect-deliverability) (updated 2026-01-27) - [Email vs. LinkedIn Response Rates: 2026 Benchmarks](https://warmysender.com/blog/posts/email-vs-linkedin-response-rates-2026-benchmarks) (updated 2026-03-21) - [Email Warmup-Only Tools vs. All-in-One Platforms: Complete 2026 Guide](https://warmysender.com/blog/posts/email-warmup-only-tool-vs-all-in-one-platform) (updated 2026-03-25) - [GDPR Compliant Cold Email: Complete Guide for EU Markets](https://warmysender.com/blog/posts/gdpr-compliant-cold-email-guide-eu-markets) (updated 2026-01-27) - [Gmail Deliverability 2026: New Rules & Best Practices](https://warmysender.com/blog/posts/gmail-deliverability-2026-rules-best-practices) (updated 2026-09-03) - [How ISPs Decide What's Spam: The Technical Deep Dive](https://warmysender.com/blog/posts/how-isps-decide-spam-technical-deep-dive) (updated 2026-01-27) - [How to Fix Low Email Open Rates (Below 20%)](https://warmysender.com/blog/posts/how-to-fix-low-email-open-rates) (updated 2026-03-21) - [Is Cold Email Legal? (GDPR, CAN-SPAM, CASL Explained 2026)](https://warmysender.com/blog/posts/is-cold-email-legal-gdpr-can-spam-casl-explained-2026) (updated 2026-01-27) - [LinkedIn Account Restricted? How to Get Unbanned Fast](https://warmysender.com/blog/posts/linkedin-account-restricted-how-to-fix) (updated 2026-03-21) - [LinkedIn Sales Navigator vs. Basic LinkedIn: Worth the Upgrade?](https://warmysender.com/blog/posts/linkedin-sales-navigator-vs-basic-worth-upgrade) (updated 2026-01-27) - [Optimal Cold Email Sequence Length: 3 vs. 5 vs. 7 Emails](https://warmysender.com/blog/posts/optimal-cold-email-sequence-length-3-5-7-emails) (updated 2026-08-19) - [Sales Emails vs. Marketing Emails: What's the Difference?](https://warmysender.com/blog/posts/sales-emails-vs-marketing-emails-difference) (updated 2026-01-27) - [Scaling Multichannel Outreach Without Burning Out](https://warmysender.com/blog/posts/scaling-multichannel-outreach-without-burning-out) (updated 2026-01-27) - [Sender Reputation Score: How to Monitor & Improve Yours](https://warmysender.com/blog/posts/sender-reputation-score-how-to-monitor-improve) (updated 2026-03-21) - [Should You Start With Email or LinkedIn? (Decision Framework)](https://warmysender.com/blog/posts/should-you-start-with-email-or-linkedin-decision-framework) (updated 2026-01-27) - [The Complete SDR Tech Stack for 2026: Tools, Budgets & Implementation](https://warmysender.com/blog/posts/sdr-tech-stack-2026-complete-guide) (updated 2026-08-19) - [The Ultimate Cold Email Framework for B2B Sales](https://warmysender.com/blog/posts/ultimate-cold-email-framework-b2b-sales) (updated 2026-08-19) - [What is Email Warmup and Why Do You Need It? (2026 Guide)](https://warmysender.com/blog/posts/what-is-email-warmup-guide) (updated 2026-08-19) - [When to Send Cold Emails: Best Days & Times 2026](https://warmysender.com/blog/posts/best-time-to-send-cold-emails) (updated 2026-07-24) - [Why Are My Emails Going to Spam? Complete Diagnostic Guide 2026](https://warmysender.com/blog/posts/why-are-my-emails-going-to-spam-diagnostic-guide) (updated 2026-03-25) #### Warmup Networks (1 articles) - [Top 15 Email Warming Networks & Peer-to-Peer Systems](https://warmysender.com/blog/posts/132-top-15-email-warming-networks) (updated 2026-07-09) #### cold-email (30 articles) - [Cold Email Compliance 2026: The Practical Guide to GDPR, CAN-SPAM & CASL](https://warmysender.com/blog/posts/cold-email-legal-compliance-guide-2026) (updated 2026-09-03) - [Cold Email for Affiliate Marketing & Partnership Recruitment (2026)](https://warmysender.com/blog/posts/cold-email-for-affiliate-marketing-partnerships-2026) (updated 2026-02-15) - [Cold Email for Climate & CleanTech: Selling Sustainability Solutions (2026)](https://warmysender.com/blog/posts/cold-email-for-climate-cleantech-sales-2026) (updated 2026-07-24) - [Cold Email for Crypto & Web3 Companies (2026)](https://warmysender.com/blog/posts/cold-email-for-crypto-web3-companies-2026) (updated 2026-02-15) - [Cold Email for Cybersecurity Vendors: Selling Security Solutions (2026)](https://warmysender.com/blog/posts/cold-email-for-cybersecurity-vendors-2026) (updated 2026-02-15) - [Cold Email for Education & EdTech: Selling to Schools & Districts (2026)](https://warmysender.com/blog/posts/cold-email-for-education-edtech-sales-2026) (updated 2026-03-18) - [Cold Email for Food & Beverage Wholesale Sales (2026)](https://warmysender.com/blog/posts/cold-email-for-food-beverage-wholesale-2026) (updated 2026-03-20) - [Cold Email for Government & Public Sector: RFP Outreach (2026)](https://warmysender.com/blog/posts/cold-email-for-government-public-sector-2026) (updated 2026-02-15) - [Cold Email for HR Tech Vendors: Selling to People Teams (2026)](https://warmysender.com/blog/posts/cold-email-for-hr-tech-vendors-2026) (updated 2026-07-24) - [Cold Email for Insurance Agents & Brokers: Lead Gen Templates (2026)](https://warmysender.com/blog/posts/cold-email-for-insurance-agents-brokers-2026) (updated 2026-03-18) - [Cold Email for Legal Tech Vendors: Selling to Law Firms (2026)](https://warmysender.com/blog/posts/cold-email-for-legal-tech-vendors-2026) (updated 2026-07-24) - [Cold Email for Logistics & Supply Chain Sales (2026)](https://warmysender.com/blog/posts/cold-email-for-logistics-supply-chain-2026) (updated 2026-02-15) - [Cold Email for Manufacturing & Industrial Sales (2026)](https://warmysender.com/blog/posts/cold-email-for-manufacturing-industrial-sales-2026) (updated 2026-03-18) - [Cold Email for Media & Advertising Sales: Publisher Outreach (2026)](https://warmysender.com/blog/posts/cold-email-for-media-advertising-sales-2026) (updated 2026-07-24) - [Cold Email for Nonprofits: Fundraising & Partnership Outreach (2026)](https://warmysender.com/blog/posts/cold-email-for-nonprofits-fundraising-outreach-2026) (updated 2026-07-25) - [Cold Email for Product Launches: Announcement Sequences (2026)](https://warmysender.com/blog/posts/cold-email-for-product-launches-announcements-2026) (updated 2026-02-15) - [Cold Email for PropTech & Real Estate Technology Sales (2026)](https://warmysender.com/blog/posts/cold-email-for-proptech-real-estate-tech-2026) (updated 2026-02-15) - [Cold Email for Travel & Hospitality B2B Sales (2026)](https://warmysender.com/blog/posts/cold-email-for-travel-hospitality-b2b-2026) (updated 2026-02-15) - [Cold Email for Wedding & Event Vendors: B2B Outreach (2026)](https://warmysender.com/blog/posts/cold-email-for-wedding-event-vendors-b2b-2026) (updated 2026-02-15) - [Cold Email Response Handling: The Complete Playbook (2026)](https://warmysender.com/blog/posts/cold-email-response-handling-playbook-2026) (updated 2026-02-15) - [Cold Email Sender Name: First Name, Full Name, or Company? (2026)](https://warmysender.com/blog/posts/cold-email-sender-name-optimization-2026) (updated 2026-02-15) - [Cold Email Statistics & Benchmarks 2026: What's Actually Working](https://warmysender.com/blog/posts/cold-email-statistics-benchmarks-2026) (updated 2026-01-28) - [Email Signature Optimization for Cold Email: What to Include (2026)](https://warmysender.com/blog/posts/email-signature-optimization-cold-email-2026) (updated 2026-07-24) - [From Cold to Sold: The Advanced Guide to Reply Management & Threading Strategy (2026)](https://warmysender.com/blog/posts/reply-management-threading-strategy-2026) (updated 2026-08-19) - [Hyper-Personalization in Cold Email: Beyond First Name & Company (2026)](https://warmysender.com/blog/posts/hyper-personalization-beyond-merge-tags-2026) (updated 2026-08-19) - [Lead Generation for Marketing Agencies: Email and LinkedIn Playbook](https://warmysender.com/blog/posts/lead-generation-marketing-agencies-email-linkedin-playbook) (updated 2026-01-27) - [Multi-Domain Cold Email Strategy: The 2026 Scaling Playbook](https://warmysender.com/blog/posts/multi-domain-cold-email-strategy-2026) (updated 2026-01-28) - [Safe Scaling: The Exact Roadmap from Email Warmup to Full Campaign Volume](https://warmysender.com/blog/posts/warmup-to-campaign-transition-2026) (updated 2026-03-21) - [Scientific Cold Email: A/B Testing Frameworks for Statistically Significant Growth](https://warmysender.com/blog/posts/ab-testing-cold-email-guide-2026) (updated 2026-01-08) - [The Perfect Follow-Up Email Strategy: Timing, Templates & Tactics That Work](https://warmysender.com/blog/posts/perfect-follow-up-email-strategy) (updated 2026-08-19) #### cold-outreach (2 articles) - [Best Cold Outreach Tools 2026: Email + LinkedIn Combined](https://warmysender.com/blog/posts/best-cold-outreach-tools-2026) (updated 2026-07-25) - [Cold Email vs Cold Calling: Which Works Better in 2026? (Data-Backed Comparison)](https://warmysender.com/blog/posts/cold-email-vs-cold-calling-2026) (updated 2026-08-19) #### comparisons (1 articles) - [Admaxxer vs. Triple Whale vs. Northbeam vs. TrueProfit (2026): Which DTC Analytics Platform Actually Fits a Lean E-commerce Stack?](https://warmysender.com/blog/posts/admaxxer-vs-triple-whale-vs-northbeam-vs-trueprofit-2026) (updated 2026-08-19) #### compliance (2 articles) - [Omnichannel Compliance: Privacy Rules Across Email, LinkedIn & Phone (2026)](https://warmysender.com/blog/posts/omnichannel-compliance-multi-platform-privacy-2026) (updated 2026-07-24) - [Privacy-First Cold Email: Strategies for a Post-Cookie World (2026)](https://warmysender.com/blog/posts/privacy-first-cold-email-strategies-2026) (updated 2026-02-15) #### deliverability (12 articles) - [12 Cold Email Deliverability Myths Debunked (2026)](https://warmysender.com/blog/posts/cold-email-deliverability-myths-debunked-2026) (updated 2026-02-15) - [Advanced Email Bounce Rate Reduction: From 8% to Under 2% (2026)](https://warmysender.com/blog/posts/email-bounce-rate-reduction-advanced-techniques-2026) (updated 2026-03-18) - [Double Opt-In vs Single Opt-In: Impact on Deliverability (2026)](https://warmysender.com/blog/posts/double-opt-in-vs-single-opt-in-deliverability-2026) (updated 2026-03-25) - [Email List Decay: Why Lists Go Stale & How to Re-Engage (2026)](https://warmysender.com/blog/posts/email-list-decay-re-engagement-strategies-2026) (updated 2026-03-21) - [Email Preheader Text Optimization for Cold Email (2026)](https://warmysender.com/blog/posts/email-preheader-text-optimization-cold-email-2026) (updated 2026-02-15) - [Gmail Gemini AI: How Google's AI Changes Cold Email Deliverability (2026)](https://warmysender.com/blog/posts/gmail-gemini-ai-impact-cold-email-deliverability-2026) (updated 2026-02-15) - [Gmail & Yahoo Authentication Requirements 2026: Complete Compliance Guide](https://warmysender.com/blog/posts/gmail-yahoo-authentication-requirements-2026) (updated 2026-09-03) - [Inbox Placement Testing: Tools & Methods to Verify Delivery (2026)](https://warmysender.com/blog/posts/inbox-placement-testing-tools-methods-2026) (updated 2026-09-03) - [Microsoft Outlook Deliverability Guide 2026: Master the Toughest ISP](https://warmysender.com/blog/posts/microsoft-outlook-deliverability-guide-2026) (updated 2026-08-19) - [Rotating Domains for Cold Email: When & How to Switch (2026)](https://warmysender.com/blog/posts/rotating-domains-cold-email-deliverability-2026) (updated 2026-07-24) - [The Complete Email Warmup Guide for 2026](https://warmysender.com/blog/posts/email-warmup-guide-2026) (updated 2026-03-25) - [The Zero-Bounce Blueprint: Ultimate Guide to Email List Hygiene & Validation](https://warmysender.com/blog/posts/email-list-validation-guide-2026) (updated 2026-08-19) #### email-outreach (1 articles) - [Best Email Outreach Software 2026: 12 Tools Tested & Compared](https://warmysender.com/blog/posts/best-email-outreach-software-complete-comparison-2026) (updated 2026-08-19) #### email-warmup (4 articles) - [Best Email Warmup Tools with LinkedIn Integration 2026](https://warmysender.com/blog/posts/best-email-warmup-tools-linkedin-integration-2026) (updated 2026-07-25) - [Email Warmup Engagement Metrics: What Open & Reply Rates to Target (2026)](https://warmysender.com/blog/posts/email-warmup-engagement-metrics-benchmarks-2026) (updated 2026-07-24) - [Email Warmup for Agency Clients: Managing Warmup at Scale (2026)](https://warmysender.com/blog/posts/email-warmup-for-agency-clients-at-scale-2026) (updated 2026-02-15) - [Email Warmup Monitoring & Alerts: Know When Things Go Wrong (2026)](https://warmysender.com/blog/posts/email-warmup-monitoring-alerts-setup-2026) (updated 2026-02-15) #### guide (1 articles) - [How to Build a Multichannel Outreach Strategy: Email + LinkedIn Playbook (2026)](https://warmysender.com/blog/posts/multichannel-outreach-strategy-email-linkedin-playbook-2026) (updated 2026-08-19) #### guides (2 articles) - [The 8 Best DTC Ad Analytics Tools for Meta + Google in 2026 (Ranked by Price-to-Value for Sub-$10M Brands)](https://warmysender.com/blog/posts/best-dtc-ad-analytics-tools-meta-google-2026) (updated 2026-08-19) - [Why DTC Founders Are Quietly Walking Away from $1,000/Month Attribution Tools — And What They're Replacing Them With](https://warmysender.com/blog/posts/why-dtc-founders-walking-away-from-expensive-attribution-2026) (updated 2026-07-24) #### lead-generation (1 articles) - [Best B2B Lead Generation Tools 2026: Find, Connect & Convert](https://warmysender.com/blog/posts/best-b2b-lead-generation-tools-2026) (updated 2026-08-19) #### linkedin-automation (30 articles) - [15 Best LinkedIn Outreach Tools 2026: Complete Comparison Guide](https://warmysender.com/blog/posts/best-linkedin-outreach-tools-2026-complete-guide) (updated 2026-08-19) - [35 Best LinkedIn Automation Tools 2026: Ultimate Ranked Guide](https://warmysender.com/blog/posts/35-best-linkedin-automation-tools-ultimate-guide-2026) (updated 2026-08-19) - [Best Dripify Alternatives 2026: 10 LinkedIn Tools Compared](https://warmysender.com/blog/posts/best-dripify-alternatives-2026) (updated 2026-08-19) - [Best Expandi Alternatives 2026: 10 LinkedIn Tools Compared](https://warmysender.com/blog/posts/best-expandi-alternatives-2026) (updated 2026-07-13) - [Best HeyReach Alternatives 2026: LinkedIn Automation Without Agency Pricing](https://warmysender.com/blog/posts/best-heyreach-alternatives-2026) (updated 2026-07-13) - [Best LinkedIn AI Tools 2026: AI-Powered Outreach & Personalization](https://warmysender.com/blog/posts/best-linkedin-ai-tools-outreach-personalization-2026) (updated 2026-08-19) - [Best LinkedIn Automation Tools for B2B Sales Teams 2026](https://warmysender.com/blog/posts/best-linkedin-automation-tools-b2b-sales-2026) (updated 2026-08-19) - [Best LinkedIn Automation Tools for Enterprise Teams 2026](https://warmysender.com/blog/posts/best-linkedin-automation-tools-enterprise-2026) (updated 2026-08-19) - [Best LinkedIn Automation Tools for Recruiters 2026](https://warmysender.com/blog/posts/best-linkedin-automation-tools-recruiters-2026) (updated 2026-08-19) - [Best LinkedIn Automation Tools with CRM Integration 2026](https://warmysender.com/blog/posts/best-linkedin-automation-tools-crm-integration-2026) (updated 2026-07-09) - [Best LinkedIn Campaign Automation Software 2026: Complete Review](https://warmysender.com/blog/posts/best-linkedin-campaign-automation-software-2026) (updated 2026-08-19) - [Best LinkedIn Connection Request Tools 2026: Grow Your Network Safely](https://warmysender.com/blog/posts/best-linkedin-connection-request-tools-2026) (updated 2026-08-19) - [Best LinkedIn InMail Automation Tools 2026](https://warmysender.com/blog/posts/best-linkedin-inmail-automation-tools-2026) (updated 2026-08-19) - [Best LinkedIn Lead Generation Software 2026: Complete Buyer's Guide](https://warmysender.com/blog/posts/best-linkedin-lead-generation-software-2026) (updated 2026-08-19) - [Best LinkedIn Outreach Tools for Agencies 2026: Manage Multiple Clients](https://warmysender.com/blog/posts/best-linkedin-outreach-tools-agencies-2026) (updated 2026-08-19) - [Best LinkedIn Outreach Tools for Consultants & Freelancers 2026](https://warmysender.com/blog/posts/best-linkedin-outreach-tools-consultants-freelancers-2026) (updated 2026-07-13) - [Best LinkedIn Outreach Tools for Real Estate Agents 2026](https://warmysender.com/blog/posts/best-linkedin-outreach-tools-real-estate-2026) (updated 2026-08-19) - [Best LinkedIn Outreach Tools for SaaS Companies 2026](https://warmysender.com/blog/posts/best-linkedin-outreach-tools-saas-companies-2026) (updated 2026-08-19) - [Best LinkedIn Outreach Tools for Startups & Small Teams 2026](https://warmysender.com/blog/posts/best-linkedin-outreach-tools-startups-small-teams-2026) (updated 2026-08-19) - [Best LinkedIn Prospecting Tools for Sales Reps 2026](https://warmysender.com/blog/posts/best-linkedin-prospecting-tools-sales-reps-2026) (updated 2026-07-25) - [Best LinkedIn Sales Navigator Automation Tools 2026](https://warmysender.com/blog/posts/best-linkedin-sales-navigator-automation-tools-2026) (updated 2026-08-19) - [Best LinkedIn Scraping & Data Extraction Tools 2026](https://warmysender.com/blog/posts/best-linkedin-scraping-data-extraction-tools-2026) (updated 2026-08-19) - [Best Meet Alfred Alternatives 2026: 10 Multichannel Tools Compared](https://warmysender.com/blog/posts/best-meet-alfred-alternatives-2026) (updated 2026-07-13) - [Cloud-Based vs Browser Extension LinkedIn Automation 2026: Which Is Safer?](https://warmysender.com/blog/posts/cloud-vs-browser-extension-linkedin-automation-2026) (updated 2026-08-19) - [Dripify vs Expandi 2026: Head-to-Head Comparison (+ Better Alternative)](https://warmysender.com/blog/posts/dripify-vs-expandi-2026-comparison) (updated 2026-08-19) - [HeyReach vs Dripify vs Expandi 2026: 3-Way LinkedIn Tool Comparison](https://warmysender.com/blog/posts/heyreach-vs-dripify-vs-expandi-2026) (updated 2026-08-19) - [LinkedIn Automation vs Manual Outreach 2026: Data-Driven Comparison](https://warmysender.com/blog/posts/linkedin-automation-vs-manual-outreach-2026) (updated 2026-08-19) - [LinkedIn Outreach Tools Pricing Comparison 2026: Complete Breakdown](https://warmysender.com/blog/posts/linkedin-outreach-tools-pricing-comparison-2026) (updated 2026-07-25) - [Salesflow vs Expandi 2026: Agency LinkedIn Tool Comparison (+ Better Alternative)](https://warmysender.com/blog/posts/salesflow-vs-expandi-2026-comparison) (updated 2026-08-19) - [Waalaxy vs Expandi 2026: Chrome Extension vs Cloud Automation (+ Better Alternative)](https://warmysender.com/blog/posts/waalaxy-vs-expandi-2026-comparison) (updated 2026-08-19) #### linkedin-strategy (1 articles) - [LinkedIn Outreach Strategy 2026: Complete Guide with Tools & Templates](https://warmysender.com/blog/posts/linkedin-outreach-strategy-guide-2026) (updated 2026-08-19) #### listicle (25 articles) - [11 Best AI Outreach Tools to Scale Revenue (2026)](https://warmysender.com/blog/posts/best-ai-outreach-tools-2026) (updated 2026-08-19) - [11 Best B2B Prospecting Tools for Lead Generation (2026)](https://warmysender.com/blog/posts/best-b2b-prospecting-tools-lead-generation-2026) (updated 2026-07-13) - [11 Best Cold Email Platforms for B2B Sales Teams (2026)](https://warmysender.com/blog/posts/best-cold-email-platforms-b2b-2026) (updated 2026-08-19) - [11 Best Email Outreach Software for Sales & Marketing (2026)](https://warmysender.com/blog/posts/best-email-outreach-software-2026) (updated 2026-08-19) - [11 Best LinkedIn Management Tools for Sales Teams (2026)](https://warmysender.com/blog/posts/best-linkedin-management-tools-sales-2026) (updated 2026-07-13) - [11 Best LinkedIn Sales Tools for B2B Teams (2026)](https://warmysender.com/blog/posts/best-linkedin-sales-tools-b2b-2026) (updated 2026-08-19) - [11 Best Multichannel Outreach Tools Compared (2026)](https://warmysender.com/blog/posts/best-multichannel-outreach-tools-compared-2026) (updated 2026-07-25) - [11 Best Outbound Sales Tools for B2B Revenue Teams (2026)](https://warmysender.com/blog/posts/best-outbound-sales-tools-b2b-2026) (updated 2026-08-19) - [11 Best Outreach.io Alternatives for Sales Teams (2026)](https://warmysender.com/blog/posts/best-outreach-io-alternatives-2026) (updated 2026-08-19) - [11 Best Sales Cadence Tools for Automated Follow-Ups (2026)](https://warmysender.com/blog/posts/best-sales-cadence-tools-automated-followups-2026) (updated 2026-08-19) - [11 Best Salesloft Alternatives for Sales Engagement (2026)](https://warmysender.com/blog/posts/best-salesloft-alternatives-2026) (updated 2026-07-13) - [9 Best Free LinkedIn Automation Tools (2026)](https://warmysender.com/blog/posts/best-free-linkedin-automation-tools-2026) (updated 2026-08-19) - [9 Best Instantly Alternatives for Cold Email & Outreach (2026)](https://warmysender.com/blog/posts/best-instantly-alternatives-2026) (updated 2026-07-25) - [9 Best La Growth Machine (LGM) Alternatives for Multichannel Outreach (2026)](https://warmysender.com/blog/posts/best-la-growth-machine-alternatives-2026) (updated 2026-07-25) - [9 Best LinkedIn Messaging Automation Tools (2026)](https://warmysender.com/blog/posts/best-linkedin-messaging-automation-tools-2026) (updated 2026-08-19) - [9 Best Outreach Platforms for Startups & Small Teams (2026)](https://warmysender.com/blog/posts/best-outreach-platforms-startups-small-teams-2026) (updated 2026-07-25) - [9 Best Outreach Tools with Built-in Email Warmup (2026)](https://warmysender.com/blog/posts/best-outreach-tools-built-in-email-warmup-2026) (updated 2026-08-19) - [9 Best Reply.io Alternatives for Sales Outreach (2026)](https://warmysender.com/blog/posts/best-reply-io-alternatives-2026) (updated 2026-08-19) - [9 Best Sales Engagement Platforms for B2B Outbound (2026)](https://warmysender.com/blog/posts/best-sales-engagement-platforms-b2b-2026) (updated 2026-07-25) - [9 Best Smartlead Alternatives for Cold Email & Outreach (2026)](https://warmysender.com/blog/posts/best-smartlead-alternatives-2026) (updated 2026-07-25) - [Best Email and LinkedIn Outreach Tools Combined (2026)](https://warmysender.com/blog/posts/best-email-linkedin-outreach-tools-combined-2026) (updated 2026-08-19) - [Best LinkedIn & Email Outreach Tools for Lead Gen Agencies (2026)](https://warmysender.com/blog/posts/best-linkedin-email-outreach-tools-agencies-2026) (updated 2026-07-25) - [Best Tools to Find and Email Leads: Complete B2B Stack (2026)](https://warmysender.com/blog/posts/best-tools-find-email-leads-b2b-2026) (updated 2026-07-13) - [Email Warmup for Outreach: Why It's the Foundation of Multichannel Success (2026)](https://warmysender.com/blog/posts/email-warmup-outreach-foundation-multichannel-2026) (updated 2026-08-19) - [LinkedIn Outreach Automation: Complete Strategy & Tools Guide (2026)](https://warmysender.com/blog/posts/linkedin-outreach-automation-guide-2026) (updated 2026-08-19) #### multichannel-outreach (3 articles) - [Best Cold Email + LinkedIn Sequence Tools 2026: Multichannel Cadences](https://warmysender.com/blog/posts/best-cold-email-linkedin-sequence-tools-2026) (updated 2026-07-25) - [Best Multichannel Outreach Tools 2026: LinkedIn + Email Combined](https://warmysender.com/blog/posts/best-multichannel-outreach-tools-linkedin-email-2026) (updated 2026-08-19) - [Best Multichannel Sales Outreach Platforms 2026: Email, LinkedIn, Calls & More](https://warmysender.com/blog/posts/best-multichannel-sales-outreach-platforms-2026) (updated 2026-07-25) #### outbound-sales (1 articles) - [Best Outbound Sales Tools 2026: Complete Tech Stack Guide](https://warmysender.com/blog/posts/best-outbound-sales-tools-2026-tech-stack) (updated 2026-07-13) #### research (29 articles) - [B2B Cold Email Open Rate Benchmarks by Company Size (2026)](https://warmysender.com/blog/posts/b2b-cold-email-open-rate-benchmarks-company-size-2026) (updated 2026-08-19) - [B2B Email List Decay Rate: How Fast Do Contact Lists Go Stale?](https://warmysender.com/blog/posts/b2b-email-list-decay-rate-study) (updated 2026-08-19) - [Cold Email Campaign ROI Calculator: Methodology and Benchmarks](https://warmysender.com/blog/posts/cold-email-campaign-roi-calculator-methodology-benchmarks) (updated 2026-03-20) - [Cold Email Compliance Checklist: CAN-SPAM, GDPR, and CASL Requirements for B2B Outreach](https://warmysender.com/blog/posts/cold-email-compliance-checklist-can-spam-gdpr-casl-requirements-b2b) (updated 2026-03-20) - [Cold Email Personalization Impact Study: Variable Types and Their Effect on Reply Rates](https://warmysender.com/blog/posts/cold-email-personalization-impact-study-reply-rates) (updated 2026-08-19) - [Cold Email Reply Rate Benchmarks by Industry (2026): 50,000 Campaigns Analyzed](https://warmysender.com/blog/posts/cold-email-reply-rate-benchmarks-by-industry-2026) (updated 2026-08-19) - [Cold Email Subject Line Performance: 100,000 A/B Tests Analyzed](https://warmysender.com/blog/posts/cold-email-subject-line-performance-100000-ab-tests-analyzed) (updated 2026-08-19) - [Cold Email Timing Study: Best Days and Hours for B2B Outreach](https://warmysender.com/blog/posts/cold-email-timing-study-best-days-hours-b2b-outreach) (updated 2026-08-19) - [Cold Email vs LinkedIn Outreach: Response Rate Comparison Across 10 Industries](https://warmysender.com/blog/posts/cold-email-vs-linkedin-outreach-response-rate-comparison-10-industries) (updated 2026-08-19) - [DNS Records for Email Deliverability: Complete Technical Reference](https://warmysender.com/blog/posts/dns-records-email-deliverability-complete-technical-reference) (updated 2026-08-19) - [Domain Reputation Recovery: How Long It Takes After a Spam Spike](https://warmysender.com/blog/posts/domain-reputation-recovery-timeline-after-spam-spike) (updated 2026-08-19) - [Email Authentication Failure Rates: SPF, DKIM, and DMARC Across 10,000 Domains](https://warmysender.com/blog/posts/email-authentication-failure-rates-spf-dkim-dmarc-10000-domains) (updated 2026-03-20) - [Email Bounce Rate Benchmarks: What's Normal and When to Worry](https://warmysender.com/blog/posts/email-bounce-rate-benchmarks-whats-normal-when-to-worry) (updated 2026-08-19) - [Email Bounce Types Explained: Hard Bounce vs Soft Bounce Classification and Impact](https://warmysender.com/blog/posts/email-bounce-types-explained-hard-bounce-soft-bounce-classification-impact) (updated 2026-08-19) - [Email Deliverability Monitoring: Key Metrics Every Sender Should Track](https://warmysender.com/blog/posts/email-deliverability-monitoring-key-metrics-benchmarks-guide) (updated 2026-09-03) - [Email Provider Market Share for B2B: Gmail vs Outlook vs Others (2026 Data)](https://warmysender.com/blog/posts/b2b-email-provider-market-share-gmail-outlook-2026) (updated 2026-08-19) - [Email Sending Volume and Deliverability: The Relationship Between Daily Volume and Inbox Placement](https://warmysender.com/blog/posts/email-sending-volume-deliverability-inbox-placement-study) (updated 2026-03-20) - [Email Warmup Duration Benchmark: How Long Before You Can Send Cold Email](https://warmysender.com/blog/posts/email-warmup-duration-benchmark-how-long-before-cold-email) (updated 2026-08-19) - [Email Warmup Impact on New Domains: A Controlled Study of 500 Fresh Domains](https://warmysender.com/blog/posts/email-warmup-impact-new-domains-controlled-study-500-domains) (updated 2026-08-19) - [Email Warm-Up Methodology: Peer-to-Peer vs. Seed List vs. Engagement Network](https://warmysender.com/blog/posts/email-warmup-methodology-peer-to-peer-vs-seed-list-vs-engagement-network) (updated 2026-08-19) - [Gmail vs Outlook Inbox Placement: A 12-Month Deliverability Study](https://warmysender.com/blog/posts/gmail-vs-outlook-inbox-placement-12-month-deliverability-study) (updated 2026-08-19) - [LinkedIn Acceptance Rate Benchmarks by Industry and Seniority Level](https://warmysender.com/blog/posts/linkedin-acceptance-rate-benchmarks-industry-seniority-level) (updated 2026-03-20) - [LinkedIn Outreach Message Length Study: Character Count vs. Response Rate](https://warmysender.com/blog/posts/linkedin-outreach-message-length-study-character-count-response-rate) (updated 2026-08-19) - [LinkedIn Profile View Rates by Message Type: Connection Request vs InMail vs Open Profile](https://warmysender.com/blog/posts/linkedin-profile-view-rates-by-message-type-study) (updated 2026-08-19) - [LinkedIn Sales Navigator ROI Analysis: Cost vs. Lead Quality for B2B Teams](https://warmysender.com/blog/posts/linkedin-sales-navigator-roi-analysis-cost-vs-lead-quality-2026) (updated 2026-08-19) - [Multi-Step Email Sequence Benchmarks: Optimal Number of Follow-Ups for Cold Outreach](https://warmysender.com/blog/posts/multi-step-email-sequence-benchmarks-follow-up-study) (updated 2026-08-19) - [Spam Trigger Words in Cold Email: What Actually Affects Deliverability vs. Myth](https://warmysender.com/blog/posts/spam-trigger-words-cold-email-deliverability-myth-vs-data) (updated 2026-08-19) - [SPF, DKIM, and DMARC Setup Guide for Cold Email Teams](https://warmysender.com/blog/posts/spf-dkim-dmarc-setup-guide-cold-email-teams) (updated 2026-08-19) - [State of B2B Outreach 2026: Key Trends and Data Points](https://warmysender.com/blog/posts/state-of-b2b-outreach-2026-key-trends-data-points) (updated 2026-03-20) #### strategy (12 articles) - [Account-Based Marketing Outreach: Email and LinkedIn Strategies](https://warmysender.com/blog/posts/account-based-marketing-email-linkedin-strategies) (updated 2026-01-27) - [Behavioral Intent Signals: When to Send Cold Email Based on Buyer Activity (2026)](https://warmysender.com/blog/posts/behavioral-intent-signals-cold-email-timing-2026) (updated 2026-03-25) - [Business Development for Law Firms: Ethical Cold Outreach](https://warmysender.com/blog/posts/business-development-law-firms-ethical-cold-outreach) (updated 2026-01-27) - [Cold Email Competitive Intelligence: Research Rivals Before Outreach (2026)](https://warmysender.com/blog/posts/cold-email-competitive-intelligence-techniques-2026) (updated 2026-03-18) - [Cold Email Drip vs Sequence: Key Differences & When to Use Each (2026)](https://warmysender.com/blog/posts/cold-email-drip-vs-sequence-differences-2026) (updated 2026-02-15) - [Cold Email Infrastructure: Scaling from 100 to 10,000 Emails/Day (2026)](https://warmysender.com/blog/posts/cold-email-infrastructure-scaling-guide-2026) (updated 2026-08-19) - [Firmographic Segmentation: Target by Company Size, Industry & Revenue (2026)](https://warmysender.com/blog/posts/firmographic-segmentation-cold-email-2026) (updated 2026-08-19) - [How Many Email Accounts Do You Need for Cold Outreach? (2026)](https://warmysender.com/blog/posts/how-many-email-accounts-cold-outreach-2026) (updated 2026-05-01) - [Is Cold Email Still Effective in 2026? Data-Backed Answer](https://warmysender.com/blog/posts/is-cold-email-still-effective-2026-data) (updated 2026-07-24) - [Outbound vs Inbound: When Should You Use Cold Email? (2026)](https://warmysender.com/blog/posts/outbound-vs-inbound-when-to-use-cold-email-2026) (updated 2026-02-15) - [Personalization at Scale: How to Customize Thousands of Emails](https://warmysender.com/blog/posts/personalization-at-scale-customize-thousands-emails) (updated 2026-08-19) - [Sender Rotation for Cold Email: Complete Strategy Guide (2026)](https://warmysender.com/blog/posts/sender-rotation-strategy-cold-email-2026) (updated 2026-02-15) #### templates (1 articles) - [15 Multichannel Outreach Sequence Templates (Email + LinkedIn) That Get Replies (2026)](https://warmysender.com/blog/posts/multichannel-outreach-sequence-templates-2026) (updated 2026-08-19) #### tool-comparison (3 articles) - [11 Best Sales Development Tools for SDRs & BDRs (2026)](https://warmysender.com/blog/posts/best-sales-development-tools-sdrs-2026) (updated 2026-08-19) - [9 Best LinkedIn Drip Campaign Tools for Automated Sequences (2026)](https://warmysender.com/blog/posts/best-linkedin-drip-campaign-tools-2026) (updated 2026-08-19) - [9 Best Outreach Tools with CRM Integration (2026)](https://warmysender.com/blog/posts/best-outreach-tools-crm-integration-2026) (updated 2026-08-19) #### tools (3 articles) - [AI Research Automation for Cold Email: Tools & Workflows (2026)](https://warmysender.com/blog/posts/ai-email-personalization-research-automation-2026) (updated 2026-03-21) - [B2B Data Providers Compared: Apollo, ZoomInfo, Lusha & More (2026)](https://warmysender.com/blog/posts/b2b-data-providers-comparison-2026) (updated 2026-03-20) - [CRM Integration for Cold Email: Automate Your Pipeline (2026)](https://warmysender.com/blog/posts/crm-integration-cold-email-pipeline-automation-2026) (updated 2026-07-24) #### troubleshooting (1 articles) - [Why Aren't My Cold Emails Getting Responses? (10 Reasons + Fixes)](https://warmysender.com/blog/posts/why-arent-my-cold-emails-getting-responses) (updated 2026-01-27) ### Guides (37) - [Cold Email Best Practices](https://warmysender.com/blog/guides/cold-email-best-practices) (updated 2026-07-13) - [Domain Reputation Recovery](https://warmysender.com/blog/guides/domain-reputation-recovery) (updated 2026-07-13) - [Email Deliverability Guide](https://warmysender.com/blog/guides/email-deliverability-guide) (updated 2026-07-13) - [Email Not Arriving on a Microsoft-Hosted Domain? Fix Guide](https://warmysender.com/blog/guides/email-not-arriving-microsoft-hosted-domain) (updated 2026-08-12) - [Emails Not Being Delivered? Diagnostic Guide](https://warmysender.com/blog/guides/email-not-being-delivered) (updated 2026-08-12) - [Email Warmup Guide](https://warmysender.com/blog/guides/email-warmup-guide) (updated 2026-07-13) - [Email Warmup Success Rate: What to Expect](https://warmysender.com/blog/guides/email-warmup-success-rate-what-to-expect) (updated 2026-08-12) - [Engaging with Prospects: Likes, Comments & Profile Views | WarmySender](https://warmysender.com/blog/guides/linkedin-engagement-guide) (updated 2026-02-17) - [Getting Started with LinkedIn Outreach | WarmySender](https://warmysender.com/blog/guides/linkedin-getting-started) (updated 2026-02-17) - [Gmail Account Suspended? Recovery Guide](https://warmysender.com/blog/guides/gmail-account-suspended-fix) (updated 2026-08-12) - [Google Account Suspension Appeal: What to Write](https://warmysender.com/blog/guides/google-account-suspension-appeal-what-to-write) (updated 2026-08-12) - [Google App Passwords Deprecated? What to Use Instead](https://warmysender.com/blog/guides/google-app-passwords-deprecated-what-to-use-instead) (updated 2026-08-12) - [Google Workspace Account Suspended? Fix Guide](https://warmysender.com/blog/guides/google-workspace-account-suspended-fix) (updated 2026-08-12) - [Hotmail Blocking Emails? Consumer Fix Guide](https://warmysender.com/blog/guides/hotmail-blocking-emails-fix) (updated 2026-08-12) - [How Long Sender Reputation Lasts After Stopping Warmup](https://warmysender.com/blog/guides/how-long-does-sender-reputation-last-after-stopping-warmup) (updated 2026-08-12) - [How to Check if Outlook Is Auto-Rejecting Your Email](https://warmysender.com/blog/guides/check-if-outlook-is-auto-rejecting-your-email) (updated 2026-08-12) - [How to Get Off an Email Blacklist](https://warmysender.com/blog/guides/how-to-get-off-email-blacklist) (updated 2026-08-12) - [How to Report a False Positive Email Block to Microsoft](https://warmysender.com/blog/guides/report-false-positive-block-to-microsoft) (updated 2026-08-12) - [LinkedIn Publishing & Reposts: Complete Guide | WarmySender](https://warmysender.com/blog/guides/linkedin-publishing-guide) (updated 2026-03-26) - [LinkedIn Recruiting & Job Postings: Complete Guide | WarmySender](https://warmysender.com/blog/guides/linkedin-recruiting-guide) (updated 2026-03-26) - [LinkedIn Search: Finding the Right Prospects | WarmySender](https://warmysender.com/blog/guides/linkedin-search-tips) (updated 2026-02-17) - [LinkedIn Skill Endorsement Automation: Complete Guide | WarmySender](https://warmysender.com/blog/guides/linkedin-skill-endorsements) (updated 2026-03-26) - [LinkedIn Templates & Campaigns: Complete Guide | WarmySender](https://warmysender.com/blog/guides/linkedin-templates-campaigns) (updated 2026-02-17) - [Mail Flow Rule Blocked Your Message? Fix Guide](https://warmysender.com/blog/guides/outlook-mail-flow-rule-blocked-message-fix) (updated 2026-08-12) - [Microsoft 365 Prevented Delivery? What It Means](https://warmysender.com/blog/guides/microsoft-365-prevented-delivery-unknown-server-error) (updated 2026-08-12) - [Outlook Blocking JSON or Code in Email? Fix Guide](https://warmysender.com/blog/guides/outlook-blocks-json-or-code-in-email-body) (updated 2026-08-12) - [Outlook Blocking Your Emails? Complete Fix](https://warmysender.com/blog/guides/outlook-blocking-emails-fix) (updated 2026-08-12) - [Outlook Blocks Rapid Sending? Rate Limit Fix](https://warmysender.com/blog/guides/outlook-blocks-rapid-sending-fix) (updated 2026-08-12) - [Outlook or Microsoft 365 Account Suspended? Fix Guide](https://warmysender.com/blog/guides/outlook-account-suspended-fix) (updated 2026-08-12) - [Outlook Public Folder Rejecting Emails? Complete Fix](https://warmysender.com/blog/guides/outlook-public-folder-rejecting-emails) (updated 2026-08-12) - [Outlook Sending Emails to Junk? Fix Guide](https://warmysender.com/blog/guides/outlook-sending-to-junk-fix) (updated 2026-08-12) - [Recipient's Mailbox Is Quarantined? What It Means](https://warmysender.com/blog/guides/recipient-mailbox-quarantined-fix) (updated 2026-08-12) - [SPF, DKIM, DMARC Setup](https://warmysender.com/blog/guides/spf-dkim-dmarc-setup) (updated 2026-07-13) - [Sudden Drop in Open Rates: Diagnostic Guide](https://warmysender.com/blog/guides/sudden-drop-in-open-rates-diagnostic) (updated 2026-08-12) - [Transactional Emails Blocked by Microsoft? Fix Guide](https://warmysender.com/blog/guides/transactional-emails-blocked-by-microsoft-fix) (updated 2026-08-12) - [UNABLE_TO_VERIFY_LEAF_SIGNATURE Error? SMTP Fix Guide](https://warmysender.com/blog/guides/unable-to-verify-leaf-signature-smtp-fix) (updated 2026-08-12) - [Why Email Warmup Can't Fix a Bad List](https://warmysender.com/blog/guides/why-warmup-cannot-fix-a-bad-list) (updated 2026-08-12) ### Feature Pages (35) - [Analytics & Reporting](https://warmysender.com/blog/features/analytics-reporting) (updated 2026-08-12) - [API Integration](https://warmysender.com/blog/features/api-integration) (updated 2026-07-13) - [API & Integrations](https://warmysender.com/blog/features/api-integrations) (updated 2026-05-01) - [Bounce Protection](https://warmysender.com/blog/features/bounce-protection) (updated 2026-07-13) - [Campaign Management](https://warmysender.com/blog/features/campaign-management) (updated 2026-07-13) - [Deliverability Monitoring](https://warmysender.com/blog/features/deliverability-monitoring) (updated 2026-05-01) - [Deliverability Testing](https://warmysender.com/blog/features/deliverability-testing) (updated 2026-08-12) - [Domain Reputation](https://warmysender.com/blog/features/domain-reputation) (updated 2026-09-04) - [Email Personalization](https://warmysender.com/blog/features/email-personalization) (updated 2026-07-13) - [Email Templates](https://warmysender.com/blog/features/email-templates) (updated 2026-07-13) - [Email Tracking](https://warmysender.com/blog/features/email-tracking) (updated 2026-08-12) - [Email Warmup](https://warmysender.com/blog/features/email-warmup) (updated 2026-08-19) - [Email Warmup for Agencies](https://warmysender.com/blog/features/email-warmup-for-agencies) (updated 2026-08-19) - [Email Warmup for B2B Sales Teams](https://warmysender.com/blog/features/email-warmup-for-b2b-sales-teams) (updated 2026-08-19) - [Email Warmup for Coaches](https://warmysender.com/blog/features/email-warmup-for-coaches) (updated 2026-07-13) - [Email Warmup for Consultants](https://warmysender.com/blog/features/email-warmup-for-consultants) (updated 2026-07-13) - [Email Warmup for E-commerce](https://warmysender.com/blog/features/email-warmup-for-ecommerce) (updated 2026-07-13) - [Email Warmup for Enterprise](https://warmysender.com/blog/features/email-warmup-for-enterprise) (updated 2026-08-19) - [Email Warmup for Financial Advisors](https://warmysender.com/blog/features/email-warmup-for-financial-advisors) (updated 2026-07-13) - [Email Warmup for Freelancers](https://warmysender.com/blog/features/email-warmup-for-freelancers) (updated 2026-07-13) - [Email Warmup for Insurance Agents](https://warmysender.com/blog/features/email-warmup-for-insurance-agents) (updated 2026-07-13) - [Email Warmup for Marketing Agencies](https://warmysender.com/blog/features/email-warmup-for-marketing-agencies) (updated 2026-08-19) - [Email Warmup for Real Estate](https://warmysender.com/blog/features/email-warmup-for-real-estate) (updated 2026-07-13) - [Email Warmup for Recruiters](https://warmysender.com/blog/features/email-warmup-for-recruiters) (updated 2026-07-13) - [Email Warmup for SaaS](https://warmysender.com/blog/features/email-warmup-for-saas) (updated 2026-08-19) - [Email Warmup for Startups](https://warmysender.com/blog/features/email-warmup-for-startups) (updated 2026-07-13) - [Inbox Rotation](https://warmysender.com/blog/features/inbox-rotation) (updated 2026-07-13) - [LinkedIn Outreach](https://warmysender.com/blog/features/linkedin-outreach) (updated 2026-09-06) - [Mailbox Health Monitoring](https://warmysender.com/blog/features/mailbox-health) (updated 2026-07-13) - [Multi-Mailbox Management](https://warmysender.com/blog/features/multi-mailbox) (updated 2026-07-13) - [Prospect Management](https://warmysender.com/blog/features/prospect-management) (updated 2026-07-13) - [Sequence Automation](https://warmysender.com/blog/features/sequence-automation) (updated 2026-07-13) - [Spam Testing](https://warmysender.com/blog/features/spam-testing) (updated 2026-08-12) - [Team Collaboration](https://warmysender.com/blog/features/team-collaboration) (updated 2026-05-01) - [WhatsApp Outreach](https://warmysender.com/blog/features/whatsapp-outreach) (updated 2026-09-06) ### Comparison Pages (27) - [WarmySender vs Allegrow 2026: Pricing, Features & Full Comparison](https://warmysender.com/blog/compare/warmysender-vs-allegrow) (updated 2026-08-19) - [WarmySender vs Apollo.io 2026: Email Warmup & Sales Platform Comparison](https://warmysender.com/blog/compare/warmysender-vs-apollo) (updated 2026-08-19) - [WarmySender vs Brevo 2026: Pricing, Features & Complete Comparison](https://warmysender.com/blog/compare/warmysender-vs-brevo) (updated 2026-07-13) - [WarmySender vs Close CRM 2026 | Email Warmup & Sales Platform Comparison](https://warmysender.com/blog/compare/warmysender-vs-close-crm) (updated 2026-07-13) - [WarmySender vs Folderly: Which Deliverability Tool is Worth It? [2026]](https://warmysender.com/blog/compare/warmysender-vs-folderly) (updated 2026-07-13) - [WarmySender vs GMass 2026 | Gmail Mail Merge Pricing & Features Comparison](https://warmysender.com/blog/compare/warmysender-vs-gmass) (updated 2026-07-13) - [WarmySender vs Hunter.io 2026: Pricing, Features & Full Comparison](https://warmysender.com/blog/compare/warmysender-vs-hunter) (updated 2026-07-13) - [WarmySender vs InboxWarm (OutreachBin): Which Email Warmup Tool Wins? [2026]](https://warmysender.com/blog/compare/warmysender-vs-inboxwarm) (updated 2026-08-19) - [WarmySender vs Instantly.ai 2026 | Pricing, Features & ROI Comparison](https://warmysender.com/blog/compare/warmysender-vs-instantly) (updated 2026-08-19) - [WarmySender vs Klaviyo 2026 | Cold Email Warmup vs Ecommerce Marketing](https://warmysender.com/blog/compare/warmysender-vs-klaviyo) (updated 2026-07-13) - [WarmySender vs Lemlist 2026 | Save $4,000+ With Flat Pricing](https://warmysender.com/blog/compare/warmysender-vs-lemlist) (updated 2026-07-13) - [WarmySender vs Lemwarm 2026: Pricing, Features & Full Comparison](https://warmysender.com/blog/compare/warmysender-vs-lemwarm) (updated 2026-07-13) - [WarmySender vs Mailchimp 2026: Pricing, Features & ROI Comparison](https://warmysender.com/blog/compare/warmysender-vs-mailchimp) (updated 2026-08-19) - [WarmySender vs Mailivery: Which Email Warmup Tool Wins? [2026]](https://warmysender.com/blog/compare/warmysender-vs-mailivery) (updated 2026-08-19) - [WarmySender vs MailReach: Which Email Warmup Tool Wins? [2026]](https://warmysender.com/blog/compare/warmysender-vs-mailreach) (updated 2026-08-19) - [WarmySender vs Mailwarm 2026 | Save $3,000+ Over 5 Years](https://warmysender.com/blog/compare/warmysender-vs-mailwarm) (updated 2026-07-13) - [WarmySender vs OutreachBin: Which Cold Email Tool Wins? [2026]](https://warmysender.com/blog/compare/warmysender-vs-outreachbin) (updated 2026-08-19) - [WarmySender vs Outreach.io 2026: Pricing, Features & ROI Comparison](https://warmysender.com/blog/compare/warmysender-vs-outreach) (updated 2026-08-19) - [WarmySender vs Quickmail 2026: Pricing, Features & ROI Comparison](https://warmysender.com/blog/compare/warmysender-vs-quickmail) (updated 2026-07-13) - [WarmySender vs Reply.io 2026 | Email Warmup & Outreach Comparison](https://warmysender.com/blog/compare/warmysender-vs-reply-io) (updated 2026-07-13) - [WarmySender vs SalesLoft 2026: Pricing, Features & Full Comparison](https://warmysender.com/blog/compare/warmysender-vs-salesloft) (updated 2026-08-19) - [WarmySender vs Smartlead (2026 Comparison) | $14.99/mo vs $39-174/mo](https://warmysender.com/blog/compare/warmysender-vs-smartlead) (updated 2026-07-13) - [WarmySender vs Snov.io 2026 | Save $2,000+ Over 5 Years](https://warmysender.com/blog/compare/warmysender-vs-snov-io) (updated 2026-07-13) - [WarmySender vs TrulyInbox: Which Email Warmup Tool Wins? [2026]](https://warmysender.com/blog/compare/warmysender-vs-trulyinbox) (updated 2026-08-19) - [WarmySender vs Warmbox: Email Warmup Comparison 2026 | Save 95% on Costs](https://warmysender.com/blog/compare/warmysender-vs-warmbox) (updated 2026-07-13) - [WarmySender vs Warmup Inbox: Which Email Warmup Tool Wins? [2026]](https://warmysender.com/blog/compare/warmysender-vs-warmup-inbox) (updated 2026-08-19) - [WarmySender vs Woodpecker 2026: Pricing, Features & Honest Comparison](https://warmysender.com/blog/compare/warmysender-vs-woodpecker) (updated 2026-07-13) ### Glossary (27) - [Bounce Rate](https://warmysender.com/blog/glossary/bounce-rate) (updated 2026-01-01) - [CAN-SPAM Act](https://warmysender.com/blog/glossary/can-spam) (updated 2026-03-20) - [Catch-All Domain (Accept-All)](https://warmysender.com/blog/glossary/catch-all-domain) (updated 2026-09-08) - [Click-Through Rate (CTR)](https://warmysender.com/blog/glossary/click-rate) (updated 2026-03-20) - [Cold Email](https://warmysender.com/blog/glossary/cold-email) (updated 2026-03-20) - [Disposable Email (Throwaway Address)](https://warmysender.com/blog/glossary/disposable-email) (updated 2026-09-08) - [DKIM](https://warmysender.com/blog/glossary/dkim) (updated 2026-01-01) - [DMARC](https://warmysender.com/blog/glossary/dmarc) (updated 2026-01-01) - [Double Opt-In](https://warmysender.com/blog/glossary/double-opt-in) (updated 2026-03-20) - [Email Blacklist](https://warmysender.com/blog/glossary/blacklist) (updated 2026-03-20) - [Email Deliverability](https://warmysender.com/blog/glossary/deliverability) (updated 2026-03-20) - [Email Personalization](https://warmysender.com/blog/glossary/email-personalization) (updated 2026-03-20) - [Email Sequence](https://warmysender.com/blog/glossary/email-sequence) (updated 2026-03-20) - [Email Threading](https://warmysender.com/blog/glossary/email-threading) (updated 2026-03-20) - [Email Verification](https://warmysender.com/blog/glossary/email-verification) (updated 2026-03-20) - [Email Warmup](https://warmysender.com/blog/glossary/email-warmup) (updated 2026-03-20) - [GDPR](https://warmysender.com/blog/glossary/gdpr) (updated 2026-03-20) - [Inbox Placement](https://warmysender.com/blog/glossary/inbox-placement) (updated 2026-03-20) - [IP Warmup](https://warmysender.com/blog/glossary/ip-warmup) (updated 2026-03-20) - [List Hygiene](https://warmysender.com/blog/glossary/list-hygiene) (updated 2026-03-20) - [MX Record](https://warmysender.com/blog/glossary/mx-record) (updated 2026-01-01) - [Open Rate](https://warmysender.com/blog/glossary/open-rate) (updated 2026-03-20) - [Sender Reputation](https://warmysender.com/blog/glossary/sender-reputation) (updated 2026-03-20) - [Spam Folder](https://warmysender.com/blog/glossary/spam-folder) (updated 2026-03-20) - [Spam Trap](https://warmysender.com/blog/glossary/spam-trap) (updated 2026-03-20) - [SPF Record](https://warmysender.com/blog/glossary/spf-record) (updated 2026-01-01) - [Unsubscribe Rate](https://warmysender.com/blog/glossary/unsubscribe-rate) (updated 2026-03-20) ### Use Cases (10) - [Email Warmup for Cold Email Outreach](https://warmysender.com/blog/use-cases/cold-email-outreach) (updated 2026-07-13) - [Email Warmup for Customer Win-Back Campaigns](https://warmysender.com/blog/use-cases/customer-winback) (updated 2026-03-20) - [Email Warmup for Event Promotion](https://warmysender.com/blog/use-cases/event-promotion) (updated 2026-07-13) - [Email Warmup for Investor Outreach](https://warmysender.com/blog/use-cases/investor-outreach) (updated 2026-07-13) - [Email Warmup for Lead Generation](https://warmysender.com/blog/use-cases/lead-generation) (updated 2026-07-13) - [Email Warmup for Link Building Outreach](https://warmysender.com/blog/use-cases/link-building) (updated 2026-07-13) - [Email Warmup for Partnership Development](https://warmysender.com/blog/use-cases/partnership-outreach) (updated 2026-07-13) - [Email Warmup for PR & Media Outreach](https://warmysender.com/blog/use-cases/pr-media-outreach) (updated 2026-07-13) - [Email Warmup for Recruiting & Hiring](https://warmysender.com/blog/use-cases/recruiting-outreach) (updated 2026-07-13) - [Email Warmup for Sales Prospecting](https://warmysender.com/blog/use-cases/sales-prospecting) (updated 2026-07-13) ### Integrations (10) - [Gmail Integration](https://warmysender.com/blog/integrations/gmail-integration) (updated 2026-07-13) - [Google Workspace Integration](https://warmysender.com/blog/integrations/google-workspace-integration) (updated 2026-07-13) - [HubSpot Integration](https://warmysender.com/blog/integrations/hubspot-integration) (updated 2026-01-01) - [Microsoft 365 Integration](https://warmysender.com/blog/integrations/microsoft-365-integration) (updated 2026-01-01) - [Outlook Integration](https://warmysender.com/blog/integrations/outlook-integration) (updated 2026-01-01) - [Pipedrive Integration](https://warmysender.com/blog/integrations/pipedrive-integration) (updated 2026-01-01) - [Salesforce Integration](https://warmysender.com/blog/integrations/salesforce-integration) (updated 2026-01-01) - [SMTP/IMAP Integration](https://warmysender.com/blog/integrations/smtp-imap-integration) (updated 2026-01-01) - [Webhooks & API](https://warmysender.com/blog/integrations/webhooks-api-integration) (updated 2026-01-01) - [Zapier Integration](https://warmysender.com/blog/integrations/zapier-integration) (updated 2026-01-01) ## Translated Content Total: 524 English + 82 translated articles ### ar (16 articles) - [10 أفضل بدائل Lemlist للمرسلين ذوي الحجم الكبير (2026)](https://warmysender.com/ar/blog/posts/63-lemlist-alternatives-volume) - [10 أفضل بدائل Mailshake لحملات LinkedIn + البريد الإلكتروني (2026)](https://warmysender.com/ar/blog/posts/66-mailshake-alternatives-linkedin) - [8 أفضل بدائل QuickMail لتكاملات API (2026)](https://warmysender.com/ar/blog/posts/67-quickmail-alternatives-api) - [8 أفضل بدائل Woodpecker للتوعية متعددة القنوات (2026)](https://warmysender.com/ar/blog/posts/64-woodpecker-alternatives) - [9 أفضل بدائل GMass للفرق المؤسسية (2026)](https://warmysender.com/ar/blog/posts/65-gmass-alternatives-enterprise) - [9 أفضل بدائل Reply.io للفرق الواعية بالميزانية (2026)](https://warmysender.com/ar/blog/posts/68-reply-alternatives-budget) - [أفضل 10 أدوات أتمتة LinkedIn (آمنة لعام 2026)](https://warmysender.com/ar/blog/posts/top-10-linkedin-automation-tools-safe-2026) - [أفضل 35 أداة لأتمتة LinkedIn 2026: الدليل النهائي المصنّف](https://warmysender.com/ar/blog/posts/35-best-linkedin-automation-tools-ultimate-guide-2026) - [أفضل 5 أدوات أتمتة LinkedIn آمنة لن تؤدي إلى حظرك 2026](https://warmysender.com/ar/blog/posts/top-5-safe-linkedin-automation-tools-2026) - [أفضل 5 أدوات أتمتة LinkedIn لمستخدمي Sales Navigator 2026](https://warmysender.com/ar/blog/posts/top-5-linkedin-automation-tools-sales-navigator-2026) - [أفضل 5 أدوات أتمتة اتصالات LinkedIn (سحابية) 2026](https://warmysender.com/ar/blog/posts/top-5-linkedin-connection-automation-cloud-based-2026) - [أفضل 5 بدائل لـ Expandi لأتمتة LinkedIn (2026)](https://warmysender.com/ar/blog/posts/top-5-expandi-alternatives-linkedin-automation-2026) - [أفضل بدائل HeyReach لعام 2026: أتمتة LinkedIn بدون أسعار الوكالات](https://warmysender.com/ar/blog/posts/best-heyreach-alternatives-2026) - [بدائل Apollo.io (2026): أفضل الأدوات للبيانات + الإرسال](https://warmysender.com/ar/blog/posts/46-apollo-alternatives) - [بدائل Instantly لعام 2026: 7 خيارات أفضل](https://warmysender.com/ar/blog/posts/43-instantly-alternatives) - [بدائل Smartlead (2026): 7 خيارات أفضل](https://warmysender.com/ar/blog/posts/44-smartlead-alternatives) ### de (12 articles) - [10 beste Lemlist-Alternativen für High-Volume-Sender (2026)](https://warmysender.com/de/blog/posts/63-lemlist-alternatives-volume) - [10 beste Mailshake-Alternativen für LinkedIn + Email-Kampagnen (2026)](https://warmysender.com/de/blog/posts/66-mailshake-alternatives-linkedin) - [35 Beste LinkedIn-Automatisierungstools 2026: Ultimativer Ranking-Leitfaden](https://warmysender.com/de/blog/posts/35-best-linkedin-automation-tools-ultimate-guide-2026) - [8 beste QuickMail-Alternativen für API-Integrationen (2026)](https://warmysender.com/de/blog/posts/67-quickmail-alternatives-api) - [8 beste Woodpecker-Alternativen für Multi-Channel-Outreach (2026)](https://warmysender.com/de/blog/posts/64-woodpecker-alternatives) - [9 beste GMass-Alternativen für Enterprise-Teams (2026)](https://warmysender.com/de/blog/posts/65-gmass-alternatives-enterprise) - [9 beste Reply.io-Alternativen für budgetbewusste Teams (2026)](https://warmysender.com/de/blog/posts/68-reply-alternatives-budget) - [Apollo.io Alternativen (2026): Beste Tools für Daten + Versand](https://warmysender.com/de/blog/posts/46-apollo-alternatives) - [Beste HeyReach Alternativen 2026: LinkedIn-Automatisierung ohne Agentur-Preise](https://warmysender.com/de/blog/posts/best-heyreach-alternatives-2026) - [Die 7 besten Woodpecker-Alternativen für Cold E-Mail (2026)](https://warmysender.com/de/blog/posts/top-7-woodpecker-alternatives-cold-email-2026) - [Instantly Alternativen (2026): 7 bessere Optionen](https://warmysender.com/de/blog/posts/43-instantly-alternatives) - [Smartlead Alternativen (2026): 7 bessere Optionen](https://warmysender.com/de/blog/posts/44-smartlead-alternatives) ### es (20 articles) - [10 Mejores Alternativas a Lemlist para Remitentes de Alto Volumen (2026)](https://warmysender.com/es/blog/posts/63-lemlist-alternatives-volume) - [10 Mejores Alternativas a Mailshake para Campañas LinkedIn + Email (2026)](https://warmysender.com/es/blog/posts/66-mailshake-alternatives-linkedin) - [8 Mejores Alternativas a QuickMail para Integraciones API (2026)](https://warmysender.com/es/blog/posts/67-quickmail-alternatives-api) - [8 Mejores Alternativas a Woodpecker para Alcance Multicanal (2026)](https://warmysender.com/es/blog/posts/64-woodpecker-alternatives) - [9 Mejores Alternativas a GMass para Equipos Enterprise (2026)](https://warmysender.com/es/blog/posts/65-gmass-alternatives-enterprise) - [9 Mejores Alternativas a Reply.io para Equipos Conscientes del Presupuesto (2026)](https://warmysender.com/es/blog/posts/68-reply-alternatives-budget) - [Alternativas a Apollo.io (2026): Mejores Herramientas para Datos + Envío](https://warmysender.com/es/blog/posts/46-apollo-alternatives) - [Alternativas a Instantly (2026): 7 Mejores Opciones](https://warmysender.com/es/blog/posts/43-instantly-alternatives) - [Alternativas a Smartlead (2026): 7 Mejores Opciones](https://warmysender.com/es/blog/posts/44-smartlead-alternatives) - [Las 35 Mejores Herramientas de Automatización LinkedIn 2026: Guía Definitiva con Ranking](https://warmysender.com/es/blog/posts/35-best-linkedin-automation-tools-ultimate-guide-2026) - [Mejores Alternativas a HeyReach 2026: Automatización LinkedIn sin Precios de Agencia](https://warmysender.com/es/blog/posts/best-heyreach-alternatives-2026) - [Top 5 Alternativas LinkedIn Sales Navigator (Más Baratas) 2026](https://warmysender.com/es/blog/posts/top-5-sales-navigator-alternatives-2026) - [Top 5 Alternativas Reply.io para IA Cold Email (2026)](https://warmysender.com/es/blog/posts/top-5-reply-io-alternatives-ai-cold-email-2026) - [Top 5 Alternativas Waalaxy para Automatización LinkedIn (2026)](https://warmysender.com/es/blog/posts/top-5-waalaxy-alternatives-linkedin-2026) - [Top 5 Alternativas Zopto (Herramientas LinkedIn Más Baratas en 2026)](https://warmysender.com/es/blog/posts/top-5-zopto-alternatives-cheaper-linkedin-tools-2026) - [Top 5 Herramientas de Automatización de Conexiones LinkedIn (Basadas en Nube) 2026](https://warmysender.com/es/blog/posts/top-5-linkedin-connection-automation-cloud-based-2026) - [Top 5 Herramientas de Automatización de InMail de LinkedIn 2026](https://warmysender.com/es/blog/posts/top-5-linkedin-inmail-automation-tools-2026) - [Top 5 Herramientas de Automatización de Mensajes LinkedIn (Seguras + Efectivas) 2026](https://warmysender.com/es/blog/posts/top-5-linkedin-message-automation-tools-2026) - [Top 5 Herramientas de Automatización LinkedIn Que No Te Prohibirán 2026](https://warmysender.com/es/blog/posts/top-5-safe-linkedin-automation-tools-2026) - [Top 5 Herramientas LinkedIn para Prospección B2B 2026](https://warmysender.com/es/blog/posts/top-5-linkedin-tools-b2b-prospecting-2026) ### fr (20 articles) - [9 Meilleures Alternatives à GMass pour les Équipes Entreprise (2026)](https://warmysender.com/fr/blog/posts/65-gmass-alternatives-enterprise) - [Alternatives à Apollo.io (2026) : Meilleurs Outils pour Données + Envoi](https://warmysender.com/fr/blog/posts/46-apollo-alternatives) - [Alternatives à Instantly (2026) : 7 Meilleures Options](https://warmysender.com/fr/blog/posts/43-instantly-alternatives) - [Alternatives à Smartlead (2026) : 7 Meilleures Options](https://warmysender.com/fr/blog/posts/44-smartlead-alternatives) - [Les 35 Meilleurs Outils d'Automatisation LinkedIn 2026 : Guide Ultime avec Classement](https://warmysender.com/fr/blog/posts/35-best-linkedin-automation-tools-ultimate-guide-2026) - [Meilleures Alternatives à HeyReach 2026 : Automatisation LinkedIn sans Tarifs d'Agence](https://warmysender.com/fr/blog/posts/best-heyreach-alternatives-2026) - [Top 10 des Extensions Chrome pour la Prospection LinkedIn 2026](https://warmysender.com/fr/blog/posts/top-10-linkedin-prospecting-chrome-extensions-2026) - [Top 10 des Outils de Warmup Email avec Essais Gratuits (2026)](https://warmysender.com/fr/blog/posts/top-10-email-warmup-tools-free-trials-2026) - [Top 10 des Services de Warmup Email Comparés : Tarifs + Fonctionnalités (2026)](https://warmysender.com/fr/blog/posts/top-10-email-warmup-services-2026) - [Top 3 des Outils d'Automatisation des Demandes de Connexion LinkedIn 2026](https://warmysender.com/fr/blog/posts/top-3-linkedin-connection-request-tools-2026) - [Top 3 des Outils de Prospection LinkedIn pour Recruteurs 2026](https://warmysender.com/fr/blog/posts/top-3-linkedin-outreach-tools-recruiters-2026) - [Top 5 des Outils d'Automatisation des Connexions LinkedIn (Cloud) 2026](https://warmysender.com/fr/blog/posts/top-5-linkedin-connection-automation-cloud-based-2026) - [Top 5 des Outils d'Automatisation des Messages LinkedIn (Sûrs + Efficaces) 2026](https://warmysender.com/fr/blog/posts/top-5-linkedin-message-automation-tools-2026) - [Top 5 des Outils d'Automatisation LinkedIn avec Personnalisation IA 2026](https://warmysender.com/fr/blog/posts/top-5-linkedin-automation-ai-personalization-2026) - [Top 5 des Outils d'Automatisation LinkedIn InMail 2026](https://warmysender.com/fr/blog/posts/top-5-linkedin-inmail-automation-tools-2026) - [Top 5 des Outils d'Automatisation LinkedIn pour Utilisateurs Sales Navigator 2026](https://warmysender.com/fr/blog/posts/top-5-linkedin-automation-tools-sales-navigator-2026) - [Top 5 des Outils de Warmup Email pour Expéditeurs Haut Volume (2026)](https://warmysender.com/fr/blog/posts/top-5-email-warmup-tools-high-volume-senders-2026) - [Top 5 des Outils de Warm-up Email pour Utilisateurs Gmail (2026)](https://warmysender.com/fr/blog/posts/top-5-email-warmup-tools-gmail-users-2026) - [Top 5 des Outils LinkedIn pour la Prospection B2B 2026](https://warmysender.com/fr/blog/posts/top-5-linkedin-tools-b2b-prospecting-2026) - [Top 5 des Services de Warmup Email pour Outlook/365 (2026)](https://warmysender.com/fr/blog/posts/top-5-email-warmup-services-outlook-365-2026) ### ja (2 articles) - [HeyReach 代替ツール おすすめ 2026年版：エージェンシー価格なしのLinkedIn自動化](https://warmysender.com/ja/blog/posts/best-heyreach-alternatives-2026) - [LinkedIn自動化ツール おすすめ35選 2026年版：究極ランキングガイド](https://warmysender.com/ja/blog/posts/35-best-linkedin-automation-tools-ultimate-guide-2026) ### pt-BR (12 articles) - [35 Melhores Ferramentas de Automacao do LinkedIn 2026: Guia Definitivo com Ranking](https://warmysender.com/pt-BR/blog/posts/35-best-linkedin-automation-tools-ultimate-guide-2026) - [Alternativas ao Instantly (2026): 7 Opções Melhores](https://warmysender.com/pt-BR/blog/posts/43-instantly-alternatives) - [Alternativas ao Smartlead (2026): 7 Opções Melhores](https://warmysender.com/pt-BR/blog/posts/44-smartlead-alternatives) - [Melhores Alternativas ao HeyReach 2026: Automacao de LinkedIn sem Precos de Agencia](https://warmysender.com/pt-BR/blog/posts/best-heyreach-alternatives-2026) - [Top 5 Alternativas ao Instantly para Aquecimento de E-mail (2026)](https://warmysender.com/pt-BR/blog/posts/top-5-instantly-alternatives-email-warmup-2026) - [Top 5 Alternativas ao LinkedIn Sales Navigator (Mais Baratas) 2026](https://warmysender.com/pt-BR/blog/posts/top-5-sales-navigator-alternatives-2026) - [Top 5 Alternativas ao Reply.io para E-mail Frio com IA (2026)](https://warmysender.com/pt-BR/blog/posts/top-5-reply-io-alternatives-ai-cold-email-2026) - [Top 5 Alternativas ao Waalaxy para Automação do LinkedIn (2026)](https://warmysender.com/pt-BR/blog/posts/top-5-waalaxy-alternatives-linkedin-2026) - [Top 5 Alternativas ao Zopto (Ferramentas LinkedIn Mais Baratas em 2026)](https://warmysender.com/pt-BR/blog/posts/top-5-zopto-alternatives-cheaper-linkedin-tools-2026) - [Top 7 Alternativas ao Lemlist para E-mail Frio (2026)](https://warmysender.com/pt-BR/blog/posts/top-7-lemlist-alternatives-cold-email-2026) - [Top 7 Alternativas ao Mailshake (Melhores + Mais Baratas em 2026)](https://warmysender.com/pt-BR/blog/posts/top-7-mailshake-alternatives-better-cheaper-2026) - [Top 7 Alternativas ao Outreach.io para Equipes de Vendas (2026)](https://warmysender.com/pt-BR/blog/posts/top-7-outreach-io-alternatives-sales-teams-2026) ## Reviews - Trustpilot: https://www.trustpilot.com/review/warmysender.com - G2: https://www.g2.com/products/warmysender/reviews ## Contact - Support: hello@warmysender.com - Sales: sales@warmysender.com - Website: https://warmysender.com --- Content last updated 2026-09-09. 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