Free tool · DKIM record checker
What's actually at your DKIM selector?
Paste a full host (like selector1._domainkey.example.com) and get the TXT record AND any CNAME delegation in one round-trip. No selector guessing — what you type is what we resolve.
Got a finding you don't want to chase?
Hand this off to Mailstinger.
We'll host the policies, rotate the keys, and watch the reports for you. One CNAME and you're done — no spreadsheets, no XML reading, no “what was this DKIM selector again?” moments at 4pm on a Friday.