Free tool
Catch-all checker
Find out if a domain accepts mail for every address, real or not. Free, no sign-up.
Enter a domain to see if it accepts mail for every address.
What it checks
What this tool checks
Three things, every time you run it.
- 01
Tests a made-up address
We ask the server about a random mailbox that cannot exist.
- 02
Reads the answer
If it is accepted, the domain accepts every address. Big free providers and domains we checked recently are answered straight away.
- 03
Never sends mail
We stop before anything is sent.
Results
How to read the result
Every result comes with a plain reason.
The domain rejects unknown addresses, so mailboxes can be confirmed.
Every address is accepted, so no mailbox can be confirmed.
The server did not answer in time. Ask again in a minute; that answer is free.
Checking more than a few?
Upload a CSV and verify every address with all six checks. Start with 200 free credits.
FAQ
Catch-all checker questions
Short answers about this tool.
Still have a question? Talk to us.
Check your list before you send it
Start with 200 free credits. Pay per credit after that.