Free tools
Email authentication checkers
Look up a domain's SPF, DKIM or DMARC record and get a plain explanation of what is wrong. No account needed.
- SPF checkerLook up a domain's SPF record, follow its includes and count its DNS lookups, with a plain explanation of every problem found.
- DKIM checkerLook up a DKIM public key by domain and selector, and check its tags, key type and key size against the standard.
- DMARC checkerLook up a domain's DMARC record, see the policy receivers will apply and what every tag means, and check where reports go.
Try it on the free plan.
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