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DKIMValidator.com

DKIM, SPF, SpamAssassin Email Validator

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About this launch

A free service to validate DKIM, SPF, and SpamAssassin scores by sending an email.

Questions on the route

How does DKIMValidator.com work?
Messages sent to any @dkimvalidator.com address are routed to the Mandrill Inbound mail account, then submitted to their server where it is saved. The Perl packages Mail::DKIM::Verifier, Mail::SPF, Mail::SpamAssassin, and Net::DNS::Resolver::Programmable are used to display DKIM, SPF, and SpamAssassin results. Tests are performed each time the page is loaded, allowing users to change DNS records and retest without resending the message.
How often are SpamAssassin rules updated?
SpamAssassin rules are updated daily through the sa-update process to ensure they are always current.
How long are messages kept on the service?
Messages are deleted a few hours after they are received. The message is saved once, and the tests are performed each time the page is loaded.
Why is this tool useful for DKIM configuration testing?
The service is useful for verifying end-to-end functionality of DKIM and SPF configuration because emails are sent through regular mail servers, so all headers that the tools see are the same as what email recipients will see. Additionally, the tool attempts to look up DKIM records directly from authoritative servers to minimize DNS caching delays.

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Key features

  • Validate DKIM configuration
  • Check SPF validity
  • Measure SpamAssassin score
  • DNS record lookups from authoritative servers
  • Retest without resending messages

More on this profile

DKIMValidator.com has a free listing. The owner can unlock the full profile for $5:

  • Founder story (locked)
  • Milestones (locked)
  • Screenshots and demo video (locked)
  • Dofollow website link (locked)
  • Comparisons (locked)

Link metrics

Majestic link data for dkimvalidator.com; the arrow is the change since the previous check.

Trust Flow
39
no change since last check
Citation Flow
37
no change since last check
Referring domains
720
no change since last check
External backlinks
6,180
no change since last check

Top topic: Reference/Education (35). Checked 3 Oct 2026, changed 3 Oct 2026. Link data by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

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