TempMail.name
All tools

DKIM Checker

Look up a domain’s DKIM public key record. Unlike MX/SPF/DMARC, DKIM records live at a selector-specific hostname that can’t be discovered from DNS alone.

DKIM selectors aren’t discoverable from DNS alone — leave this blank to check a handful of common ones (default, google, selector1…), or enter the selector your provider uses if you know it.