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About DKIM Validator
DKIM Validator checks email authentication from end to end. You send a message to any address at dkimvalidator.com, then open the site to see DomainKeys and DKIM signature validity, SPF results and the SpamAssassin score.
Because the message travels through real mail servers, it sees the same headers a recipient would. It looks up DKIM records from your authoritative DNS server on each test, which cuts down the wait caused by DNS caching while you set up records.
Strengths
- DKIM, SPF and SpamAssassin results in one place
- Tests real mail flow rather than just DNS records
- Queries the authoritative DNS server to avoid cache delays
Limitations
- Test messages are stored on a third-party server
- Only checks messages you send to it
Details
- Pricing
- FreeFree to use.
- License
- Proprietary
- Platforms
- Web
- How it runs
- Web application
- Account
- Not required
- Works offline
- No
- Best suited for
- Checking a new DKIM and SPF setup before sending real mail
- Categories
- Website testing
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
Alternatives to DKIM Validator
Compare allSoftware that can replace DKIM Validator for an important use case, and what changes if you switch.
Maileroo Mail Tester
A free web tool that grades a test email for authentication, spam score, DNS and blacklists.
Maileroo Mail Tester also grades a real sent message, adding blacklist, BIMI and MTA-STS checks and suggested DNS records, while promoting Maileroo's sending service.
Mail Tester
A web tool that scores how likely an email is to be marked as spam.
Mail Tester scores a single sent email out of 10 for spam likelihood and offers an API, with less detail on what each check covers.
LearnDMARC
An interactive web console that visualizes how SPF, DKIM and DMARC evaluate a real email.
LearnDMARC tests a real message and visually explains SPF, DKIM and DMARC alignment step by step, but needs a desktop screen for the full view.
GlockApps
An online email deliverability tester that checks inbox placement, spam scores, blocklists and domain authentication.
GlockApps adds inbox placement across major providers, blocklists and spam scores to SPF, DKIM and DMARC checks, with full seed tests on a paid plan.
Postmark Spam Check
A free web tool and JSON API that returns the SpamAssassin score of an email message.
Postmark Spam Check returns only a SpamAssassin score through a web page or JSON API, without DKIM or SPF results.
Similar software
Related functionality, not necessarily a direct replacement.
EasyDMARC DKIM Lookup
A free web tool that looks up and validates a domain's DKIM record for a given selector.
MXToolbox DKIM Lookup
A free web tool that tests whether a domain publishes a valid DKIM public key for a selector.
Kitterman SPF Validator
Online SPF tools that retrieve and validate a domain's SPF record or test a draft record.
MXToolbox
A web-based suite of DNS, MX, SPF, DMARC and blacklist lookups for diagnosing email delivery.
Mailpit
An email testing tool that catches outgoing messages over SMTP and shows them in a web interface.
dmarcian DMARC Inspector
A free web tool that shows a domain's DMARC record and checks it for syntax and policy issues.
