Free Tool

Check your domain’s email security basics.

Submit a domain and get a plain-English review of SPF, DMARC, DKIM, and MX records — the pieces that help reduce spoofing, delivery issues, and trust problems.

A quick look at the records that decide whether mail from your domain can be trusted.

This is a lightweight check, not a full email security assessment. It helps spot common gaps that affect spoofing resistance, deliverability, and basic domain trust.

SPF

Approved senders

Checks whether your domain publishes which mail systems are allowed to send on its behalf.

DMARC

Failure policy

Looks for a policy that tells receivers what to do when messages fail authentication.

DKIM

Message signing

Checks common selectors for signatures that help prove messages were not altered in transit.

MX

Mail routing

Confirms the domain has mail exchanger records so receiving systems know where mail belongs.