Email tool
DKIM Key Checker
Lookup a DKIM selector and domain to confirm whether the public signing key is published in DNS.
DNS query
How DKIM works
DKIM signs outgoing mail with a private key. Receivers use the public key published in DNS to verify that the message was not modified in transit.
Selector tip
The selector is chosen by your email provider. Common selectors include google, selector1, selector2, default, and k1.