← All insights · Mon, 24 Aug 2026

State of email: 80.8% mail-enabled, 76.9% SPF, 65.1% DMARC

A one-glance snapshot of how the internet configures email right now.

A quick pulse on 50,000 of the world's most-linked domains:

80.8% are mail-enabled (publish MX)
76.9% publish SPF
65.1% publish DMARC, but only 23.2% enforce p=reject

The headline barely moves year to year: adoption is high, enforcement is low. Most domains do the easy part (publish a record) and skip the part that actually stops spoofing (enforce it). Top MX providers right now: Other / self-hosted (32.5%), Google Workspace / Gmail (28.2%), Microsoft 365 / Outlook (22.7%), Proofpoint (5.6%), Mimecast (3.1%).

Free deliverability tools → Check any domain (MX, SPF, DMARC), test your own inbox placement scored out of 100, generate SPF and DMARC records, or run a blocklist check, all free with no signup and nothing stored, at deliverability.mailtester.ninja/tools.

Verify a real address → This is aggregate DNS data. To check whether a specific email address exists and is deliverable, use MailTester Ninja , real-time, nothing stored.

Data: MailTester Ninja Email Infrastructure Index, 50,000 domains, snapshot Mon, 24 Aug 2026 04:19:04 GMT. Reuse freely under CC BY 4.0.

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Built & updated automatically by MailTester Ninja, the email verifier that stores nothing. DNS-only, aggregate data, no personal information. · JSON API · RSS