Email Deliverability Checker
Check any sending domain in seconds: SPF, DMARC (with policy), MX, and three blacklist verdicts — Spamhaus DBL, SURBL, and URIBL.
Free · no signup · last reviewed August 29, 2026
Methodology & honest limits
How it works: we query your domain against three independent DNS blacklists — Spamhaus DBL, SURBL, and URIBL — exactly the way mail filters do, and read your SPF, DMARC, and MX records straight from DNS. Nothing is stored; the check runs live.
Honest limits: these are three major lists, not all of them (dozens exist, most niche). A “clean” result here is strong but not a guarantee of inbox placement — content, volume patterns, and sender history matter too. A DMARC policy of p=none passes the presence check but only monitors; quarantine or reject actually protect. Limit: 20 checks per day.
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This is the work. Want it done?
Everything here is free to use yourself — that’s the point. If you’d rather a senior marketer just handle it, in your accounts and your name: 20-minute call, no pitch deck.