Free tool
MX records checker
Look up a domain's mail servers and confirm it can receive email.
Free · No signup · Uses Piisend public API with Turnstile
MX (mail exchange) records tell the internet which servers accept email for a domain. Without them, messages cannot be delivered.
Use this before adding a sending domain or when debugging delivery issues. Piisend domain verification also relies on correct DNS.
For developers
Call the Intelligence API from your backend with a Piisend API key. No Turnstile token needed — Turnstile is only for this browser checker. See integration guides.
curl -X POST https://api.piisend.com/api/v1/intelligence/mx-records \
-H "Authorization: Bearer pii_live_..." \
-H "Content-Type: application/json" \
-d '{"domain":"example.com"}'FAQ
What if no MX records are found?
The domain may not be configured for email, DNS may not have propagated yet, or the domain does not exist. Double-check spelling and wait for DNS TTL if you recently added records.
Does this verify SPF or DKIM?
No. Use our SPF/DKIM/DMARC checker for authentication records. MX only shows where mail is accepted.