MX record lookup
Enter a domain to see its MX records: the mail servers that receive its email, in the order senders try them, and the email provider behind them.
Free: 5 checks every 2 hours.
How it works
The tool asks DNS for the domain's MX (mail exchanger) records. Each record names a mail server and a priority: senders try the lowest number first and use the others as backups.
From the server names it recognizes the provider, such as Google Workspace or Microsoft 365. A domain without MX records is usually not set up to receive email, and addresses on it bounce.
FAQ
What does "no MX record" mean?
The domain does not publish mail servers. It is usually a website-only domain, or one whose email was never set up, so addresses on it cannot receive mail.
Why are there several MX records?
For redundancy. Senders try the record with the lowest priority number first and fall back to the others if it does not answer.
Does an MX record prove that an address exists?
No. It proves that the domain receives email. Whether a specific mailbox exists takes a mailbox (SMTP) check, which the free email checker does.