Email authentication & trust
Free BIMI checker — paste a record (or headers), get a 0-100 readiness score with concrete fixes.
Paste the raw BIMI TXT string your DNS provider published at default._bimi.<domain>— or paste a raw email header block from your inbox so we can show the receiver's rendered state — and get a 0-100 BIMI-readiness score, per-checklist pass/warn/fail verdicts for each of the five BIMI guide line items (v=BIMI1 prefix, l= SVG URL, a= / v= assertion or VMC, square SVG note, DMARC enforcement floor), 3-5 strongest-driver signals, and 3-5 concrete remediation steps, no signup required.
default._bimi.<domain> in your DNS, OR paste a raw email header block from your inbox, OR both. The structural parser runs locally against the BIMI record (TLV split on ;, trim, monotone tag validation per the BIMI spec); the DMARC floor is sourced from the existing classifyDmarc engine. The AI analyst then composes an overall 0-100 score plus the 3-5 strongest drivers and 3-5 concrete remediation steps.Drop your email above — we'll only ping you about the BIMI monitor. No newsletters, no upsells.
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BIMI checker — frequently asked questions
Pair this checker with the guide
Want the step-by-step walkthrough?
The BIMI guide explains what each of the five checklist lines does in the receiver, how to tighten DMARC to the p=quarantine floor the rendering providers expect, what an SVG-conformant logo looks like, and how Microsoft uses the a= assertion of logo-control. Read it when you are publishing BIMI for the first time, then come back here and paste the record to confirm the line you wrote is structurally right.
Pair this checker with the guide
Looking for the full SPF, DKIM, DMARC, and BIMI setup walkthrough?
The email authentication pillar walkthrough explains how SPF, DKIM, DMARC, and BIMI compose as one stack — what each protocol does in the receiver, the order to publish each record so the next layer doesn't break the previous one, and why Google and Yahoo made all three mandatory in 2024. BIMI sits on top of DMARC — read the pillar before publishing BIMI for the first time.
Read the email authentication guide →