Verified Emails. Ready to send.
Check every email for validity, remove the ones that would bounce, and send with confidence from warmed-up inboxes.
Try our free email verifier
Bad emails cost you more than a bounce.
Every invalid address you send to hurts your sender reputation. Enough of them and your next campaign lands in spam, no matter how well your domains are set up.
Fewer bounces
Catch addresses that don't exist before you send to them.
A protected sender reputation
Keep dead and risky addresses away from the domains you've worked to warm up.
More replies from the same contacts
Every send goes to a mailbox that can actually receive it.
The email validation service trusted by the world's leading brands
Verify. Review. Remove.
Find out which emails are safe to send to and take out the ones that aren't, all inside Unifers.
- 1
Add your emails
Upload a file or save contacts to Unifers.
- 2
Verify them in one run
Every email is checked automatically.
- 3
Review every result
See each email's status and how many are valid, invalid, or risky.
- 4
Remove invalid emails
Take the bad addresses out and launch with clean data.
6 checks on every email.
Each address is checked from the format to the mailbox, so the result tells you whether it's safe to send.
Syntax and domain
Catches typos and invalid structure, and confirms the domain is real.
Mail server and mailbox
Confirms the domain can receive email and that the specific address exists.
Catch-all and risky addresses
Flags domains that accept every address, and disposable or auto-generated emails.
- SyntaxPassed
- DomainPassed
- Mail serverPassed
- MailboxPassed
- Catch-allNot detected
Everything we detect.
From typos to server rejections, every email is checked for anything that could make it bounce.
Syntax
Catches invalid format and structure.
MX and DNS
Confirms the domain exists and is set up to receive email.
Role-based address
Flags shared inboxes like info@ and sales@ that rarely reach one person.
Typo check
Spots common domain misspellings so you can fix them before you send.
Disposable domain
Flags throwaway addresses from temporary email services.
SMTP mailbox probe
Checks the mailbox with the mail server and recognizes how the server responds:
- Catch-all
- Full inbox
- IP blocked
- rDNS rejected
- Policy rejection
- Timeout or refused connection
- 4xx and greylisting
Know what to do with every result.
Every email gets a clear status and a clear next step.
| Status | What it means | What to do |
|---|---|---|
| Valid | Passed every check | Safe to send |
| Invalid | Doesn't exist or can't receive email | Remove it |
| Catch-all | The domain accepts everything, so the mailbox can't be confirmed | Send with care |
| Unverifiable | The server blocked a definite answer | Send cautiously and monitor bounces |
| Auto-generated | Likely machine-created or non-personal | Deprioritize |
Verification is one step. Deliverability is the whole job.
Verify emails on the same platform where you find contacts and send campaigns.
- Step 1
Upload emails
Upload a file or save contacts to Unifers.
- Step 2
Verify emails
Clean them before anything goes out.
- Step 3
Send from warmed-up inboxes
Use warmed-up domains and inboxes with DKIM, DMARC, and SPF set up automatically.
Built for teams that send.
Sales teams
Spend time on prospects who can reply, not on addresses that bounce.
Marketers
Protect deliverability before every send.
Agencies
Keep client domains healthy across every campaign.
Founders
Reach decision-makers without burning your domain on bad data.
Frequently Asked Questions
A tool that checks whether email addresses are real and able to receive messages, using technical checks on each address and its domain.
Your Data And Your Deliverability,Finally In One Place.
Start free. No credit card required.