Check your domain's deliverability health in 30 seconds. Get a clear score, find what's broken, and learn exactly how to fix it.
Built on Mailercloud's deliverability infrastructure. Each check is grounded in RFCs and real-world ISP behavior.
SPF, DKIM, DMARC alignment with full nuance — pct, sp, fo, strict mode. We probe 47 DKIM selectors automatically.
Check 40+ DNSBLs for your sending IPs and your domain. We expand SPF includes to find every IP authorized to send.
Track your sending IPs across whitelists, reputation feeds, and ISP-specific signals. Catch issues before they affect delivery.
Daily scans, score history, and alerts when something breaks. Google Postmaster integration for inbox placement data.
Verify in-transit encryption, certificate validity, and modern infrastructure signals. MTA-STS, TLS-RPT, BIMI, DNSSEC.
Every flag includes copy-paste DNS records, difficulty estimate, and time-to-fix. Top 3 actions prioritized by score impact.
Free scan, no signup required. We don't store anything unless you ask us to monitor.
MX, SPF, DKIM, DMARC, blacklists (IP + domain), TLS, PTR, BIMI, MTA-STS, TLS-RPT, IP reputation. ~30 seconds.
Clear 0-100 score. Per-check breakdown. Prioritised fixes with copy-paste DNS records.
30 seconds, no signup, free.
Start free. Upgrade when you need continuous monitoring and inbox testing.