Check your domain's email setup

Paste a domain, a URL or an email address. We'll check SPF, DKIM, DMARC, MX and public blocklists, and tell you exactly what to fix.

What we check

SPF

Whether the domain publishes a valid SPF record naming the servers allowed to send on its behalf.

DKIM

Found by probing the selector names common email providers use. A provider using a custom selector may pass even when this check finds nothing.

DMARC

Whether the domain tells receivers what to do with mail that fails SPF and DKIM.

MX

Whether the domain can receive mail at all, so replies don't bounce.

Blocklists

Checked against two free public blocklists, NordSpam and 0spam.

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