How the WarmySender leads database serves data — quality, freshness, and reporting

What this page covers

WarmySender includes a B2B lead database of 200M+ contacts. This page explains how the database serves results — the freshest contacts first — why you should verify database addresses before emailing them, how dead addresses leave the database, and how to report a bad lead.

The database focuses on fresh, contactable B2B people: each record is a real person with a name, job title, company, work email, and LinkedIn profile. You browse and narrow the pool by job title, company, industry, and location (country, state, city), plus a free-text keyword search — so you can build a targeted list of decision-makers in minutes.

WarmySender runs your outreach on autopilot with AI agents, across Cold Email, Email Warmup, LinkedIn, Instagram and Multichannel sequences — plus real-time email verification. The leads database powers the prospecting input to the Cold Email channel. Leads you save from the database flow into the same campaign-prospect schema as a CSV import; nothing about the campaign engine treats database-sourced contacts differently from manually-imported ones.

How results are ordered

Search results are sorted newest-first — the freshest contacts appear at the top of every page, so the most recently added people surface before older records. That's the single ordering; results are not re-shuffled by anything else. For example, a contact added this week appears above one added last year, regardless of its email-status label.

Separately, addresses that are confirmed bad are filtered out of search entirely — you never see them, and they never count toward the "X leads match" total.

Are the emails in the leads database verified?

No — verify before you send. Addresses in the leads database come from our data sources and are not verified by WarmySender before you save them. People change jobs and companies close domains, so some addresses will no longer exist. A dead address bounces, and a campaign pauses itself once more than 5% of its emails bounce.

The flow is the same whichever list you use:

1. Get your contacts — save leads from the database, or bring your own list.
2. Verify them — run the list through Email Verifier (Email Verifier → "Verify a List"), or any external verifier you trust.
3. Send to the verified list — WarmySender can turn the Valid results into a list for your campaign.

When a campaign still has database contacts you haven't verified, the campaign builder and the campaign page show a reminder with a Verify contacts button. It's a recommendation only — it never stops you from launching. AI agents connected to your account get the same reminder when they save, export or start a campaign.

How dead addresses leave the database

Addresses we know are dead are left out of search for everyone, so no other customer saves or emails them again:

• A hard bounce. When an email to a database address comes back with a clear "this mailbox doesn't exist" answer, that address stops being offered right away.
• Two reports. When two different customers report the same address, it is removed.

Problems on the sending side never remove an address: a message turned away because of the sender's own setup, reputation or a temporary server issue says nothing about whether the recipient's mailbox exists.

Report a bad email

If you email a contact and the address hard-bounces, click the Report link in the lead's row in your leads view. A small box opens with an optional reason; click Report to submit. Reporting the same lead again from your workspace doesn't count twice.

Why one report isn't enough

A single bounce can be a false signal, so one report on its own doesn't remove an address for everyone:

• Sender-side setup. The sending mailbox's SPF/DKIM/DMARC didn't line up, so the message was refused — but the recipient's mailbox is fine. See Provider blocks.
• A temporary problem. The sender's mail host had a momentary issue; the bounce was about the sending path, not the recipient.
• Reputation. The receiving server turned away the sender's domain, not the address. Another sender would land.

Waiting for a second customer's report (or a clear "mailbox doesn't exist" answer) means one misread bounce can't remove a good contact for everyone.

Common questions

Are the emails in the leads database verified?

No. Addresses in the leads database come from our data sources and are not verified by WarmySender before you save them. People change jobs and companies close domains, so some addresses will no longer exist. Before you email any list — leads you saved here or contacts you brought yourself — run it through Email Verifier (or any external verifier you trust) and send to the verified list. Addresses that no longer exist bounce, and a campaign pauses itself once more than 5% of its emails bounce.

How do I report a bad lead?

Open your leads view, find the lead, and click the small Report link in its row. A box opens with an optional reason — write anything (or nothing) and click Report. You'll see: "Reported. Thanks — we'll review with cross-customer corroboration." One report on its own doesn't remove the address for everyone; see the next answers for when it is removed.

Why did a lead disappear from search?

Addresses we know are dead are removed from search for everyone. That happens when an email to the address hard-bounces with a clear "this mailbox doesn't exist" answer, or when a second customer reports the same address. Leads you already saved stay in your saved list. If a lead seems to have vanished from search, also check your active filters — that's the most common reason.

Do other users see leads I reported?

No. Your report and your identity are never shown to anyone. If you're the only customer to report an address, nobody else's search results change. Once a second customer reports the same address, it stops appearing in search for everyone.

What's a hard-bounce vs. a soft-bounce?

A hard-bounce is permanent — the mailbox doesn't exist or has been closed. A soft-bounce is temporary — the mailbox exists but the message was turned away for now (full inbox, a busy server, a delay). Only report a lead after a hard-bounce; soft-bounces usually clear on their own.

How are search results ordered or sorted?

The freshest contacts come first. Results are sorted so the most recently added people appear at the top of every page, and they are not re-ranked by anything else — not by company size and not by any hidden score. Addresses we know are dead are left out of search entirely, so they never appear and never count toward the "X leads match" total.

How fresh is the data, and how often are new contacts added?

The database is continuously refreshed with new B2B contacts, and the newest ones surface first in your search results — so the most recently added people are always the first you see. Because results are ordered newest-first, you don't need to do anything to find the latest additions — they're already at the top of the list. Freshness is not the same as verified: verify a list before you email it.

Related guides

• Why was this prospect skipped — bounce — How bounce-fanout protects your domain reputation when a prospect bounces in one of your mailboxes
• Why was my prospect skipped — no LinkedIn URL — Companion explainer for LinkedIn-side URL resolution (Sales Navigator vs public profile)
• Page Speed & Performance FAQ — How the leads table renders without breaking Core Web Vitals (entry bundle <400 KB rule)
• Provider blocks (Gmail, Outlook, Yahoo) — Why a sender-side rejection should not be reported as a bad-email recipient
• Full documentation — All guides
• Support — How to get in touch