Free DKIM Record Checker
Validate your DKIM record and public key configuration for any selector.
What is DKIM?
DKIM (DomainKeys Identified Mail) is an email authentication method that allows the receiver to verify that an email was sent by the domain it claims to be from and hasn't been modified in transit.
How DKIM Works
- The sending server signs the email with a private key
- The signature is added to the email headers
- The receiving server looks up the public key in DNS using the selector
- The signature is verified using the public key
Finding Your DKIM Selector
DKIM selectors are specified by your email provider. Common selectors include:
- Google Workspace:
google - Microsoft 365:
selector1,selector2 - SendGrid:
s1,s2 - Mailchimp:
k1
Example DKIM Record
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQ...