DKIM Inspector

This page lets you configure and check your DKIM record for a domain.
I know my DKIM selector
How to add a DKIM record in DNS?
  1. Generate a DKIM key in your email platform (Google Workspace, M365, Mailgun, SendGrid, Brevo, Postmark, ...).
  2. Create a TXT record in your DNS.
  3. Name / Host: <selector>._domainkey (e.g. google._domainkey).
  4. Value: v=DKIM1; k=rsa; p=<public_key> (or k=ed25519).
  5. TTL: default (~1 h) or 5-15 min while testing.
  6. Save, wait for propagation, then run the check again.
What does it mean?
TAGDEFAULTMEANING
vDKIM1Record version.
krsaAlgorithm (rsa or ed25519).
p-Public key (base64). Required to validate signatures.
t-Flags: y (testing), s (strict - same domain only).
s*Service types (legacy).
n-Optional note.
g*Granularity (legacy).
Test your DKIM before adding it to DNS

Paste your DKIM public key value and test it.