SPF, DKIM and DMARC Checker

Instantly check your domain's email authentication.

Enter a domain name to see your SPF, DKIM and DMARC status. No signup required.

Checking… SPF

Checking… DKIM

Checking common selectors…

Checking… DMARC

How to read the results

SPF (Sender Policy Framework): Lists the mail servers authorised to send email on behalf of your domain. A missing or broken SPF record means your emails may be rejected or marked as spam.
DKIM (DomainKeys Identified Mail): A cryptographic signature that proves your emails haven't been tampered with in transit. This tool checks the most common selector names — your provider may use a different one.
DMARC (Domain-based Message Authentication, Reporting & Conformance): Tells receiving mail servers what to do if SPF or DKIM fail. A policy of reject or quarantine gives you active protection. A policy of none is monitoring-only.