BIMI (Brand Indicators for Message Identification) lets your brand logo appear next to your messages in supporting mailboxes. It is a visible reward for getting email authentication right, not an authentication method itself.
BIMI requires DMARC at an enforcement policy (p=quarantine or p=reject) covering the domain; a record of p=none will not qualify. You publish a TXT record at default._bimi.yourdomain.com with an l= tag pointing to your logo and, where required, an a= tag pointing to a certificate.
The logo must be an SVG Tiny PS file: square, with a solid background and no scripts or external references. To show logos, Gmail and Apple Mail require a verified mark certificate issued by an approved authority: a VMC for registered trademarks, or a CMC for other marks.
Because enforcement comes first, reaching BIMI means your domain is already protected against exact-domain spoofing. DMARC Engine takes domains to enforcement so BIMI becomes possible. Validate your record and logo with the tools below.
Check it on your domain
- BIMI Checker: check a domain's BIMI record, logo and VMC.
- BIMI Generator: create a BIMI record for your logo and VMC.
- BIMI Logo Validator: validate an SVG logo against the BIMI specification.