Email Authentication Checker

Verify your domain's SPF, DKIM, and DMARC records

Enter the domain you want to check (without www or http://)

What This Tool Checks

SPF Records

Specifies which servers can send email on behalf of your domain

DKIM Records

Cryptographically signs emails to verify they haven't been tampered with

DMARC Records

Tells email providers what to do when SPF or DKIM checks fail

MX Records

Identifies the mail servers responsible for receiving email for your domain

Protected by rate limiting and CAPTCHA

We implement security measures to prevent automated abuse while keeping the service free for legitimate users.

Email deliverability help