Self hosted email continues to steeply decline
Ten years of DNS measurements reveal three trends across the Internet's most popular domains: email continues to consolidate around two providers, DMARC enforcement has hit a plateau, and a surprisingly large long tail of infrastructure defies easy classification.
Summary
Email services are increasingly dominated by just two providers, according to a decade’s worth of DNS data. The findings also highlight stagnation in DMARC enforcement and a complex array of lesser-known email infrastructures.
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