Defaults.Exposed › Stats › Email authentication (SPF, DKIM, DMARC)
How many domains have no email authentication at all?
As of July 28, 2026 · census snapshot 2026-07-28
As of July 28, 2026, 119,454,538 domains — 43.3% of the 276 million graded in the Defaults.Exposed census — publish neither SPF nor DMARC, leaving them with no email authentication at all.
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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 no email authentication at all?" (as of July 28, 2026). https://defaults.exposed/stats/how-many-domains-have-no-email-authentication
Permalink:https://defaults.exposed/stats/how-many-domains-have-no-email-authentication · Machine-readable:no-email-auth.json · Licence:open data
Methodology: how we grade the internet · Source data: defaults.exposed/data. Updated with each census edition.