Enterprise-Grade Deliverability Audit

The Deliverability Audit
Competitors Can't Hide From

Full SPF, DKIM, DMARC, BIMI, MTA-STS, TLS-RPT and DNSSEC audit, powered by the same engine Competitor Inbox runs against every competitor email it tracks. Run it on your own domain, or theirs.

Not a toy SPF checker. The real audit engine.

This runs the exact same DNS authentication probe Competitor Inbox uses to score every competitor email it ingests — 7 protocols, ESP fingerprinting, and a risk-weighted score, not a pass/fail toy.

7-layer protocol audit
SPF, DKIM, DMARC, BIMI, MTA-STS, TLS-RPT, and DNSSEC — most free checkers stop at two.
Risk-weighted scoring
Each gap is weighted by real deliverability impact, not a flat checklist — a missing DMARC enforcement scores very differently than a missing BIMI logo.
Built for ongoing monitoring
This single check is a snapshot. Competitor Inbox tracks the same signal continuously across every domain you care about.

Stop Checking Deliverability. Start Tracking It.

Monitor DNS authentication, ESP infrastructure, and email cadence across every competitor you have — continuously, not one snapshot at a time.

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