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Last repository activity September 23, 2026 · Created September 14, 2026

ChenneyZhuang/email-deliverability-audit

“Four sequential DNS gates (format, dead domain, MX, role/placeholder) classify email addresses as sendable, risky, or…”

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TL;DR

Four sequential DNS gates (format, dead domain, MX, role/placeholder) classify email addresses as sendable, risky, or dead — with a hard integrity rule: every verdict traces to a query run in that session.

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