Defaults.Exposed › Stats › Email authentication (SPF, DKIM, DMARC)
How many domains have full email authentication?
As of July 28, 2026 · census snapshot 2026-07-28
As of July 28, 2026, only 7,678,989 domains — 2.8% of the 276 million graded in the Defaults.Exposed census — pass the census's full email-authentication cross-check, combining SPF with an enforcing DMARC policy.
fully_protected is the census cross-tab of domains passing all email-authentication checks simultaneously (per-domain join in overlaps.json).
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Statistic current as of July 28, 2026. Recomputed from the live census each edition; the number on this page and the machine-readable twin always match. Please cite Defaults.Exposed and link this page.
Defaults.Exposed, "How many domains have full email authentication?" (as of July 28, 2026). https://defaults.exposed/stats/how-many-domains-have-full-email-protection
Permalink:https://defaults.exposed/stats/how-many-domains-have-full-email-protection · Machine-readable:email-fully-protected.json · Licence:open data
Methodology: how we grade the internet · Source data: defaults.exposed/data. Updated with each census edition.