DMARC record checker
Read the DMARC policy at _dmarc. This does not prove mail will be delivered.
Check an address format and public mail records. A result never means the mailbox exists.
DMARC record checker Email
Email syntax validator Email syntax validator
Check whether an email address is formatted correctly. This does not prove the mailbox exists.
Email
MX record checker MX record checker
See the mail servers a domain publishes. This does not prove a mailbox exists.
Email
SPF record checker SPF record checker
Read and explain the SPF policy a domain publishes. This does not prove mail will be delivered.
Email