Email deliverability checker
Looks up SPF (sender authorization), DMARC (policy for failed checks) and DKIM (signing key) records. DKIM is published per selector — if you don't know your provider's selector, try "default", "google", "selector1", "selector2" or "k1".
What is Email deliverability checker?
SPF, DKIM and DMARC are the three DNS records that determine whether a domain's email gets delivered or marked as spam — SPF lists which servers can send mail, DKIM cryptographically signs it, and DMARC tells receivers what to do if a message fails those checks.
How to use it
Enter a domain (and a DKIM selector if you know it — try "default", "google", or "selector1" if not) to check all three records and their configuration at once.
Example
A well-configured domain shows:
SPF: Found, DMARC: Found (policy: quarantine), DKIM: Found