Free tool
SPF, DKIM and DMARC checker
Enter a domain to check its email authentication records. We look them up live in public DNS and tell you what to fix.
Keep these records healthy without checking by hand.Delicious Mail checks SPF, DKIM, DMARC and MX on every domain, every day, and tells you in plain words when one changes.
Start warmingWhat we check
SPF
That there is exactly one record, that it limits who can send, and that it stays within 10 DNS lookups.
DKIM
That a signing key is published at your selector and hasn't been revoked.
DMARC
That a record exists, which policy it sets, and whether reports are sent anywhere.
MX
That the domain can receive mail, so replies and bounce notices reach you.
Set up, warm up and send from one app.
Delicious Mail handles every step on this page, from buying the domain to answering the reply.