Authentication Checker

To use our automated testing tool, send a sample of a marketing email or newsletter to get the summary results. Senders can choose where the results should be sent.

If you wish to receive the results at the address in the “mail_from,” the sample message should be sent to
check-auth@verifier.port25.com

If you wish to receive the results at the address in the “from” header, the sample message should be sent to
check-auth2@verifier.port25.com

If you wish to receive the results at a different address from one of the addresses above, the address needs to be added to the check-auth address. For example, to send the results to: jsmith@yourdomain.com the sample message should be sent to
check-auth-jsmith=yourdomain.com@verifier.port25.com