Run your outreach on autopilot with AI agents — cold email, email warmup, LinkedIn, WhatsApp, Instagram and multichannel sequences, plus real-time email verification.
What WarmySender Is
WarmySender is an agentic-first outreach platform. You run cold email, email warmup, LinkedIn, WhatsApp, Instagram and multichannel sequences from one workspace, with real-time email verification and a 200M+ B2B lead database built in. Connect Claude, ChatGPT, Cursor, Codex, OpenClaw or Hermes Agent — or any agent that speaks MCP — and your agent can build, launch and manage campaigns on every channel, create and enroll prospects, verify email addresses and tune warmup, all in plain language. The agent never sends a message itself and can never raise a limit: creating or launching only hands the campaign to WarmySender's scheduler, which paces every email, LinkedIn, WhatsApp and Instagram action inside safe caps and the gradual ramp, no matter who is driving. Connecting and disconnecting accounts stays in the app. Plans start at $14.99/mo. View current pricing.
Our Mission
WarmySender exists to make professional outreach accessible to every business. We believe that reaching the right inbox should not require enterprise budgets or deep technical expertise — and that describing what you want in plain language should be enough to run a campaign safely. Our platform combines email warmup, cold email campaigns, LinkedIn, WhatsApp and Instagram outreach, multichannel sequences, real-time email verification and a B2B leads database in a single, affordable tool that an AI agent can drive end to end.
Our Story
WarmySender was founded in 2024 after our team experienced the frustration of poor email deliverability firsthand. Cold emails were landing in spam, outreach campaigns were underperforming, and the available tools were either too expensive or too fragmented. We saw an opportunity to build something better: a unified outreach platform that prioritizes deliverability from the ground up.
What started as an email warmup solution quickly grew into a full outreach platform. Today, WarmySender handles email warmup, multi-step cold email campaigns, LinkedIn, WhatsApp and Instagram outreach, multichannel sequences, real-time email verification, and access to a 200M+ B2B lead database — all from a single dashboard, and all drivable by an AI agent, starting at $14.99/mo.
Note: WarmySender is not affiliated with Warmy.io or any other similarly-named service.
Key Milestones
600+ expert articles published on email deliverability, cold email, and LinkedIn outreach
200M+ B2B leads in our searchable contact database
900K+ warm-up emails every month exchanged between real business mailboxes in the peer-to-peer warmup network
8,500+ mailboxes warmed to date, with multi-turn warmup exchanges up to 5 replies deep
Every warmup email composed fresh from a library of thousands of subject lines, opening lines and body paragraphs
Founder
Numan Hamza — Founder & CEO
Numan Hamza is an email deliverability expert with a background in marketing automation and B2B sales technology. After years of working with cold email systems and seeing teams struggle with inbox placement, he founded WarmySender to solve the deliverability problem at its core. His approach centers on building a peer-to-peer warmup network that uses real mailboxes and real conversations, rather than simulated interactions, to build genuine sender reputation.
Team Expertise
The WarmySender team brings deep expertise across the core disciplines that power the platform:
LinkedIn Automation: Safe LinkedIn outreach with dedicated proxies, 4-week warmup ramps, conservative per-account daily and weekly caps, and a scheduler that enforces those limits regardless of what triggered the action.
B2B Sales Technology: Multi-step sequence design, A-Z testing (26 variants), conditional branching, and CRM integrations with HubSpot, Salesforce, and Pipedrive.
Data & Infrastructure: Scalable peer-to-peer warmup network, scalable queue processing, and real-time analytics across millions of email interactions.
Core Values
Deliverability-First: Every feature we build starts with the question: "Does this protect or improve inbox placement?" Our peer-to-peer warmup network, adaptive strategy engine, and Bounce Shield system all exist to keep your emails out of spam.
Transparent Pricing: No hidden fees, no per-mailbox charges, no surprise overages. Pro starts at $14.99/mo with email warmup included. LinkedIn outreach is $12/seat/month, WhatsApp $12/seat/month and Instagram $12/seat/month.
Data Privacy: We encrypt all email credentials with AES-256-GCM, connect Outlook and Microsoft 365 via OAuth (Sign in with Microsoft) and Gmail and other providers via encrypted app passwords over IMAP/SMTP, and never sell your data.
Platform Capabilities
Email Warmup: Peer-to-peer warmup network with freshly composed message content, deep conversation threading, automatic rescue of warmup mail from the spam folder, and an adaptive strategy engine (A.H.D.E.).
Cold Email Campaigns: Multi-step sequences with merge tag personalization, A-Z testing (26 variants), conditional branching, and mailbox rotation.
LinkedIn Outreach: Automated connection requests, messages, and InMails with dedicated proxy per account and 4-week safety ramp.
WhatsApp Outreach: One-to-one WhatsApp campaigns from your own connected number, standalone or as a step inside a multichannel sequence, with a gradual ramp for new numbers.
Instagram Outreach: Multi-step Instagram DM campaigns with merge-tag personalization, conditional branching, A/B testing, and a multi-week account ramp.
Email Verification: Real-time verification of a single address or a whole list before you send, sharing the same allowance and pacing as the rest of the platform.
AI Agents (MCP): Claude, ChatGPT, Cursor, Codex, OpenClaw and Hermes Agent — or any agent that speaks MCP — can build, launch and manage campaigns on every channel in plain language. The agent never sends directly and can never raise a limit.
B2B Lead Database: 200M+ verified business contacts searchable by job title, seniority, department, industry, and location.
Unified Inbox: Email, LinkedIn, WhatsApp and Instagram replies in one dashboard with sentiment tagging and bulk operations.
Analytics & Reporting: Real-time tracking of opens, clicks, replies, bounces, and LinkedIn engagement, plus warmup inbox-vs-spam rates per mailbox.
WarmySender was founded by Numan Hamza, an email deliverability expert with a background in marketing automation and B2B sales technology. He founded WarmySender in 2024 to solve the email deliverability problem at its core using a peer-to-peer warmup network.
When was WarmySender founded?
WarmySender was founded in 2024 after the team experienced poor email deliverability firsthand. What started as an email warmup solution grew into a full outreach platform combining email warmup, cold email campaigns, LinkedIn automation, and a 200M+ B2B lead database.
What content does WarmySender publish?
WarmySender has published 600+ expert articles on email deliverability, cold email strategies, LinkedIn outreach, and B2B sales — spread across the WarmySender blog, its in-depth guides, comparisons and glossary.
How does WarmySender measure deliverability?
WarmySender measures deliverability from warmup mail. Each day it checks whether the warmup emails your mailboxes exchange arrived in the inbox or the spam folder, and turns that into a per-mailbox inbox rate, spam rate and health score. Those figures describe a sending account's reputation over time — they are not a measure of where an individual campaign email landed, because once a campaign email is accepted by the recipient's mail server no sending tool can see which folder or tab it was filed into. For campaigns you see delivery, bounce and rejection data, including messages a recipient's mail server refused as spam.
How do I contact WarmySender?
General inquiries: [email protected]. Sales: [email protected]. Website: warmysender.com. Support typically responds within 24 hours on business days.
What are WarmySender's core values?
WarmySender's core values are: Deliverability-First (every feature protects inbox placement), Transparent Pricing (no hidden fees, starting at $14.99/mo), and Data Privacy (AES-256-GCM encryption, OAuth 2.0, no data selling).
What is WarmySender?
WarmySender is an agentic-first outreach platform. You run cold email, email warmup, LinkedIn, WhatsApp, Instagram and multichannel sequences from one workspace, with real-time email verification and a 200M+ B2B lead database built in. Connect Claude, ChatGPT, Cursor, Codex, OpenClaw or Hermes Agent — or any agent that speaks MCP — and your agent can build, launch and manage campaigns on every channel, create and enroll prospects, verify email addresses and tune warmup, all in plain language. The agent never sends a message itself and can never raise a limit: creating or launching only hands the campaign to WarmySender's scheduler, which paces every email, LinkedIn, WhatsApp and Instagram action inside safe caps and the gradual ramp, no matter who is driving. Connecting and disconnecting accounts stays in the app. Plans start at $14.99/mo.