DKIM Selector Finder

Probes 50+ known ESP selectors in parallel and reports which ones resolve.

Try: google.com github.com microsoft.com
Recent:

Probed 56 selectors against cloudflare.com

Found 4 active selector(s).

SelectorProviderKey sizeStatus
s1 SendGrid 2048 bits active
smtpapi SendGrid 1024 bits active
k1 Mailchimp / Mandrill 1024 bits active
mandrill Mandrill 1024 bits active