{"edition":"2026-q3","generatedAt":"2026-09-05T15:28:39.120Z","source":{"name":"Tranco","listId":"V367N","url":"https://tranco-list.eu/list/V367N","note":"A research-oriented top-sites ranking that averages several providers over a 30-day window."},"method":{"sampled":50000,"answered":50000,"measured":["MX","DMARC"],"notMeasured":["DKIM","SPF"],"denominator":"domains with at least one MX record","timeoutMs":5000,"attemptedButNotPublished":["SPF. Apex TXT records could not be resolved reliably at the concurrency this sample needs: a random check of domains recorded as having no SPF found 14 of 14 did have one. Rather than publish a figure we know to be wrong, we publish none. DMARC lookups were separately verified accurate in the same runs."]},"totals":{"sampled":50000,"answered":50000,"withMx":36548,"withoutMx":13452},"dmarc":{"none":8094,"pNone":9400,"quarantine":8618,"reject":10436,"unprotected":17494,"unprotectedPct":47.9,"enforcingPct":52.1},"bands":[{"label":"1 – 1,000","withMx":686,"unprotected":178,"unprotectedPct":25.9,"rejectPct":51},{"label":"1,001 – 10,000","withMx":6532,"unprotected":2685,"unprotectedPct":41.1,"rejectPct":33.6},{"label":"10,001 – 50,000","withMx":29330,"unprotected":14631,"unprotectedPct":49.9,"rejectPct":26.9}],"slug":"email-authentication-2026-q3","period":"Q3 2026","canonical":"https://mailient.xyz/research/email-authentication-2026-q3","perDomainCsv":"https://mailient.xyz/research/email-authentication-2026-q3.csv","license":"https://creativecommons.org/licenses/by/4.0/","attribution":"Mailient, Q3 2026. https://mailient.xyz/research/email-authentication-2026-q3"}