DKIM tool
DKIM checker
DKIM keys are published at unpredictable selector names — a free scanner can only guess a handful of common ones. If you know the exact selector your email provider uses (check its docs, or the DKIM-Signature header on a sent message), check it directly here. We show the raw record, key strength, and whether it's revoked.
Diagnose your domain
Check SPF, DMARC, DKIM, MX, DNS health, blacklists and domain & SSL expiry in one free scan — with the exact record to paste in to fix each problem.