Free tools
Email authentication tools
Check and generate SPF, DKIM, DMARC and BIMI records. No sign-up, no limits — the same checks we run when you verify a domain.
Tester
Inbox / Spam Tester
Send an email to a one-time address and score inbox-likelihood out of 10.
Open → CheckerSPF Checker
Look up and validate a domain’s SPF record.
Open → CheckerDKIM Checker
Check a DKIM public key for a selector.
Open → CheckerDMARC Checker
Inspect a domain’s DMARC policy at _dmarc.
Open → CheckerBIMI Checker
Verify a BIMI record so your logo can show.
Open →