The DMARC enforcement gap: 64.6% publish it, only 22.7% enforce it

By the team at MailTester Ninja — a real-time email verification API that stores nothing.

Across 50,000 of the world's most-linked domains, 64.6% publish a DMARC record. Sounds healthy — until you read the policy.

Only 22.7% of all domains are on p=reject. Of the domains that publish DMARC at all, the split is:

p=none — 37.2%

p=reject — 35.2%