About
DKIMValidator.com is a web-based email validation service that accepts messages sent to any address at @dkimvalidator.com and then reports DomainKeys, DKIM, SPF, and SpamAssassin results in one place. It uses inbound mail routing through Mandrill, stores the message on the service, and runs checks with Mail::DKIM::Verifier, Mail::SPF, Mail::SpamAssassin, and DNS lookup tooling.
The service is intended for verifying end-to-end DKIM and SPF configuration against the same headers recipients will see. Messages are deleted a few hours after receipt, and the saved message can be rechecked after DNS changes without resending it.
- DKIM and SPF validation
- SpamAssassin score reporting
- Any @dkimvalidator.com address accepted
- Message retention for a few hours
- Recheck saved messages after DNS changes
- Authoritative DNS lookup attempts
Free Tier Value
This free tier has no paid upgrade path on the page and appears to be a perpetual public service with no usage cap, so it is treated as always free. Because it provides a genuinely usable validation workflow with repeated re-testing and short-term message retention, it is worth a small but real amount to a buyer even though there is no comparable paid plan to anchor against.
What's included in the free tier
Verified
- Access to DKIM validation for emails sent to any @dkimvalidator.com address.
- Access to SPF validity checks for submitted emails.
- Access to SpamAssassin scoring for submitted emails.
- Access to repeated re-testing of the same saved message after DNS changes.
- Access to message retention for a few hours before deletion.
See DKIMValidator.com pricing for current limits.
Common questions
Is DKIMValidator.com free forever?
Yes. DKIMValidator.com is free forever, with no time limit and no usage threshold that forces a paid plan.
What is DKIMValidator.com's free tier worth?
DKIMValidator.com's free tier is worth about $2.00 per month. That maps to an FTV score of 90/100. The FTV score is explained at freetier.co/ftv.
