Email Verifier
Check if an email address is real and able to receive mail in seconds. Includes catch-all and gateway-protected domains.
Why you need an email verifier
Every invalid email hurts deliverability, wastes credits, and increases bounce rates. Basic email validation only checks the format. Email verification confirms the mailbox is real and ready to receive mail.
Reduce hard bounces
Catch dead and fake addresses before they hit your send.
Protect your sender reputation
Fewer bounces means fewer flags from mail providers.
Improve email deliverability
More of your emails land in the inbox instead of bouncing back.
Save money on sends
Stop paying to send to addresses that don't exist.
Keep your CRM clean
Remove invalid and outdated addresses before they pile up.
Reach more real inboxes
Valid addresses connect you to real inboxes instead of dead ends.
When should you verify emails?
Whether you're running cold outreach, cleaning your CRM, or launching an email campaign, verifying addresses before sending helps reduce bounces and improve deliverability.
Before a cold outreach campaign
Every dead address you skip is a bounce you don't have to explain.
Before importing contacts into your CRM
Keep bad data from spreading across your team's tools.
Before launching an email marketing campaign
Protect your sender reputation before a big send.
Before handing leads to your sales team
Give reps a list they can actually work, not chase.
Before syncing data between tools
Stop invalid addresses from moving downstream automatically.
Emails found with Anymail Finder are already verified
We verify every result live, the moment we find it, so you don't need to re-verify them. If you double-check a result in another verifier and it comes back "risky", "catch-all", or "unknown", that's expected. Those are catch-all addresses most verifiers can't confirm - we can, and we already verified them individually.
97%+ guaranteed deliverability, verified at scale
In our benchmark of 15 email verification tools, Anymail Finder achieved the highest verified accuracy.
How our email verifier works
Checks run on every address before we return a result, going beyond simple email validation to confirm real deliverability.
Check the email format
Confirms the address is written correctly before anything else runs.
Verify the domain
Checks the domain exists and is set up to receive mail.
Verify the mailbox
Connects to the mail server in real time to confirm the mailbox is active.
Resolve catch-all domains
Runs deeper checks on catch-all domains instead of marking them all risky.
Handle protected mailboxes
Reaches mailboxes behind security gateways that block basic checks.
Return a clear result
Every address is returned as valid, risky, or invalid, never left unknown.
Verification results
Every address you verify comes back as one of three clear results.
The mailbox exists and can receive mail. Safe to send.
This email may bounce. We couldn't confirm it as valid or invalid.
The mailbox doesn't exist or can't receive mail. Don't send to it.
We verify the catch-alls other tools flag as risky
Catch-all domains can be up to 40% of your list at the companies you most want to reach, and basic verifiers flag every one as "risky". We verify most of them as a clear valid or invalid - only the few we genuinely can't reach stay risky.
| Most Verifiers | Anymail Finder | |
|---|---|---|
| jane@company.com | Risky | Valid |
| peter@company.com | Risky | Invalid |
What's a catch-all? A domain set to accept mail at any address, even ones that don't exist. Basic verifiers can't tell a real inbox from a typo, so they mark them all "risky".
Hard bounces are on us.
If an email we marked valid hard-bounces, report it and we'll make it right - so you only ever pay for emails that land.
Report it
Send us any hard bounce you get using your dashboard or the API - ideally with the bounce message.
Credits back
We review your report, and once we confirm a genuine hard bounce, the credits you spent go straight back.
Ways to verify emails
Choose the verification method that fits your workflow.
Verify a single email
Paste one address and get an instant valid, risky, or invalid result.
Verify an email →Verify a CSV
Upload a list of up to 100,000 rows. 0.2 credits per address, duplicates free for 30 days.
Upload a list →Verify with API
Verify addresses in real time inside your own product or workflow.
Use the API →Trusted by sales and lead-gen teams
4.8/5 across 143+ Trustpilot reviews
For email verifications, Anymail Finder is more accurate than others I've tried. It's also great at finding emails by name and domain. This is my go-to.
Jamie C. · TrustpilotOnly charges at a 97% deliverability rate, and the price is great. Connected it to my Make.com with quick help from support.
Shafy M. · CapterraIt is really easy to use, and the verified emails are all real.
Taj Šoba · TrustpilotWho uses our email verifier?
Any team that sends to or manages email addresses can use it to protect deliverability.
Sales teams
Verify prospect lists before outreach so every send counts.
Recruiters
Confirm candidate emails before reaching out.
Agencies
Clean client lead lists before handing them over.
Lead generation companies
Verify data before it goes out to clients.
CRM cleaning
Remove invalid contacts already sitting in your CRM.
Email marketers
Keep subscriber lists healthy and deliverable.
Frequently Asked Questions
Start verifying emails for free
100 free credits, no card required. Every email we mark valid comes with a 97% delivery guarantee.