New Playbook: Cold Email Infrastructure Setup Guide

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Free email finder: name + domain, deliverable email back

Type a first name, last name, and company domain. We probe the pattern, run an SMTP check on the most likely address, and return a verified email with a confidence score. 10 free lookups per IP per day.

Try it

person_search Enter a name and domain above to find a verified email.

What is an email finder?

An email finder takes a person's name and the company they work at, then returns the email address that person actually uses at work. Behind the scenes it tests common patterns (first.last@, first@, flast@, and about a dozen others) against the company's mail server, looks up known contact records, and verifies the most likely match with a real SMTP handshake before it ships you the answer.

Done right, an email finder gives you a deliverable address with a confidence score. Done wrong, it gives you a guess that bounces and damages your sender reputation. The difference is whether the tool actually verifies the result before returning it.

How Mailsfinder finds emails

1

Probe the pattern

We test the most common patterns against the domain's MX, check known contact records, and pick the highest-probability candidate for that name at that company.

2

Verify with SMTP

The candidate is run through a live SMTP handshake. The mail server confirms whether the mailbox exists. No message is delivered, no bounce is recorded.

3

Return safe-to-send

You get the email, a status (deliverable, risky, or guessed), a confidence score, and the sources used. Send confidently or skip, your call.

Why guessing kills sender reputation

Most "email finders" return the first plausible pattern without verifying it. Half of those addresses do not exist. When you send to a non-existent mailbox, the receiving server hits you with a hard bounce, and Gmail, Outlook, and Yahoo are watching. Cross the 2% bounce threshold and your domain enters spam folders for weeks.

< 2%

Bounce rate ceiling Gmail and Outlook tolerate before throttling your domain.

30+ days

Typical recovery time once a domain is flagged by a bad bulk send.

99%

Mailsfinder's verified deliverability rate across SMTP-checked addresses.

Pricing

Free

$0

100 verified lookups per day, forever. No card.

Monthly

$9.99/mo

300,000 credits per cycle.

Lifetime

$249 once

2,000,000 credits, lifetime pool.

Frequently asked questions

What does the confidence score mean? expand_more
The confidence score blends three signals: how strongly the pattern matched the company's typical format, whether the address appears in any known contact records, and what the SMTP handshake returned. Above 80% the email is verified deliverable. 50 to 80% means risky, often a catch-all domain. Below 50% is a best-guess pattern with no SMTP confirmation.
Why does the result say "risky" sometimes? expand_more
Risky usually means the domain is configured as a catch-all, accepting every address sent to it without confirming the mailbox exists. The pattern is likely right, but we cannot prove it via SMTP. You can still send, just expect a small share of those messages to land in a black hole.
Where does the data come from? expand_more
We combine public contact databases, our own verification index built from billions of SMTP checks, and live pattern probes against the target domain. Every result is verified at request time, so a domain that changed its email format last week will return today's correct pattern.
Why only 10 free lookups per day? expand_more
Each finder request runs a real SMTP handshake plus a database lookup, both of which cost compute and time. We throttle the free tool to keep it free and fast for everyone. Sign up at app.mailsfinder.com for 100 free credits per day, no card. Bulk users start at $9.99 per month for 300K credits.
Does Mailsfinder store the names I search? expand_more
For the free tool, we record only your IP for rate limiting. The name and domain are not retained after the request completes. For paid plans, search history is stored inside your account so you can re-export found contacts. GDPR and CCPA requests are honoured within 7 days.

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Find emails in bulk, not one at a time

Sign up free for 100 daily credits, or upload a list of names and domains and find thousands in one go. No card required.

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