Insights

Weekly, data-grounded reads on how the world configures email, drawn from our live Email Infrastructure Index. Aggregate DNS only, no personal data.

50.2% of SPF records use ~all (softfail), most email says "maybe"

Mon, 17 Aug 2026 · Among domains that publish SPF, softfail still beats hardfail. What that costs you.

Who runs the world's inboxes? MX market share across 50,000 domains

Mon, 10 Aug 2026 · Google, Microsoft, self-hosted, and a very long tail. Why deliverability is hard.

The DMARC enforcement gap: 64.5% publish it, only 22.9% enforce it

Mon, 03 Aug 2026 · Most domains that publish DMARC never actually turn it on. Here's the data.

The IPv6 email mirage: 55.3% of MX "support" it, but two companies carry the entire story

Sat, 11 Jul 2026 · Google runs IPv6 on 100% of its inboxes, Microsoft on 91.3%. Take those two out and IPv6 email adoption collapses to 12.9%.

83.4% of the web's email runs on just 3 providers

Thu, 02 Jul 2026 · A handful of gatekeepers receive most of the world's mail. What it means for senders.

Who actually enforces DMARC? Reject rates by email provider

Thu, 02 Jul 2026 · Enforcement isn't uniform, where a domain is hosted predicts whether it's protected.

The DMARC enforcement gap: 64.6% publish it, only 22.8% enforce it

Thu, 02 Jul 2026 · Most domains that publish DMARC never actually turn it on. Here's the data.

The email authentication funnel: 91.5% publish SPF, only 26.1% actually reject

Thu, 02 Jul 2026 · Follow mail-enabled domains from "publishes a record" to "enforces it." Most drop out.

State of email: 80.6% mail-enabled, 76.5% SPF, 64.6% DMARC

Thu, 02 Jul 2026 · A one-glance snapshot of how the internet configures email right now.

50.4% of SPF records use ~all (softfail), most email says "maybe"

Thu, 02 Jul 2026 · Among domains that publish SPF, softfail still beats hardfail. What that costs you.

Who runs the world's inboxes? MX market share across 50,000 domains

Thu, 02 Jul 2026 · Google, Microsoft, self-hosted, and a very long tail. Why deliverability is hard.

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