Check email address format and domain mail routing, including MX and Null MX records. Mailbox existence is not verified.
Checks address format and domain mail DNS. No email is sent.
We will check the format and whether its domain publishes mail routing records. The mailbox itself remains unverified.
MX records describe a domain's incoming mail servers. They do not prove that a mailbox exists, is monitored or will accept your message. Use a confirmation email in your own application to check access.
We support common ASCII mailbox names. International domains can be used when the hosting server supports IDN conversion, or entered as Punycode.
The form sends the address to this website in a POST request. DNS queries contain only the domain. The application caches domain DNS answers, not the mailbox name, and does not contact SMTP servers.
