Free tool
MX lookup
See which mail servers receive email for a domain, in priority order. Free, no sign-up.
Enter a domain to see its mail servers, lowest priority first.
What it checks
What this tool checks
Three things, every time you run it.
- 01
Finds the MX records
Every mail server listed for the domain, with its priority, looked up live.
- 02
Spots missing mail servers
No MX records, or a null MX that says the domain takes no mail, means it cannot receive email.
- 03
Names the provider
Tells you when the domain uses Google Workspace, Microsoft 365, a security gateway or another known host.
Results
How to read the result
Every result comes with a plain reason.
The domain can receive email. Lower priority numbers are tried first.
Every address on this domain will bounce.
DNS did not answer. Try again in a minute.
Checking more than a few?
Upload a CSV and verify every address with all six checks. Start with 200 free credits.
FAQ
MX lookup questions
Short answers about this tool.
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