BIMI checker

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Use this free BIMI checker tool to validate your default-selector DNS record, SVG logo, mark certificate and DMARC policy.

Check your domain's BIMI configuration

BIMI lookup

Use this BIMI checker tool to look up your domain's default selector and check its DNS record, SVG logo, mark certificate and DMARC enforcement. Need to publish or repair your setup? Use the BIMI record generator or convert your logo with the BIMI SVG converter.

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"This clarity allows us to take action faster whether it's adjusting content, fixing authentication, or addressing reputation issues. We've moved from reactive guesswork to proactive management."

John Porteous

Group IT Manager

BIMI record checker: an example lookup

This lookup checks the default selector, follows CNAMEs, and inspects logo and certificate URLs plus DMARC policy. Valid record syntax alone does not mean the whole setup is ready.

Host: default._bimi.example.com Type: TXT Value: v=BIMI1; l=https://example.com/bimi/logo.svg; a=https://example.com/bimi/certificate.pem;

Replace the example domain and URLs with your published assets.

Build a BIMI TXT record

What this BIMI validator checks

The validator checks missing or duplicate records, SVG Tiny P/S requirements, certificate dates and trust chain, domain coverage, and logo matching. It does not confirm revocation or guarantee provider display.

Prepare a compatible BIMI SVG logo

BIMI passes, but the logo is not showing

Gmail requires a VMC or CMC, and a VMC for its checkmark; certificates can supply logos with empty l=. Display still depends on aligned DMARC, reputation and provider rules—not a passing lookup alone.

Read Google's BIMI requirements

Understand your BIMI setup

Review your published record, download and validate the SVG logo and mark certificate, and check DMARC enforcement in one place.

Record found

Single record

Record valid

BIMI record lookup

Find missing or duplicate records, malformed tags, and HTTPS hosting problems.

p=nonequarantinereject

DMARC eligibility

Check the effective DMARC policy and percentage required for BIMI, including inherited subdomain policies.

TLS encryption used

TLS 1.3

Logo and certificate validation

Validate SVG Tiny PS requirements, certificate expiry and trust, domain coverage, and whether the logo matches the certificate.

Shareable report

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Shareable results

Share the BIMI lookup with your team or DNS administrator.

BIMI checker FAQs

The default record is published at default._bimi.yourdomain.com. This checker looks up that default selector and follows CNAMEs for hosted BIMI records; it does not scan custom selectors.

BIMI requires an effective DMARC policy of quarantine or reject, applied to 100% of messages. A policy of none or pct below 100 is not eligible. Individual messages must also pass DMARC.

Requirements vary by mailbox provider. Some require a Verified Mark Certificate (VMC) or Common Mark Certificate (CMC). When a certificate is published, the checker downloads it and checks its validity, expiry, domain coverage, and logo match.

No. The checker validates your DNS record, logo, certificate, and DMARC policy. Inbox providers also apply their own message authentication, reputation, and display requirements.

An empty l= can be used with an a= URL when the logo is embedded in a VMC or CMC certificate, as in Google's certificate-only setup. When both l= and a= are empty, the record explicitly declines BIMI participation.