What is BIMI?

BIMI (Brand Indicators for Message Identification) displays your brand logo next to your messages in inbox lists, in supported mail clients (Gmail, Apple Mail, Yahoo, Fastmail). It's a reward for having your authentication house in order — you cannot publish BIMI until DMARC is enforcing.

What you need to publish

  1. A DMARC record at p=quarantine or p=reject with pct=100. Without enforcement, BIMI is ignored.
  2. An SVG logo in the SVG Tiny PS 1.2 profile, served over HTTPS with Content-Type: image/svg+xml. Square, 32×32 viewBox is recommended.
  3. A BIMI TXT record at default._bimi.<your-domain> pointing to the logo URL.
  4. (Gmail only) A Verified Mark Certificate (VMC) from DigiCert or Entrust, hosted at the URL you point to with the a= tag. ~\/year. Without it, the logo won't show in Gmail specifically.

The TXT record

default._bimi.example.com TXT
"v=BIMI1; l=https://example.com/bimi/logo.svg; a=https://example.com/bimi/vmc.pem"

SVG Tiny PS 1.2 — what's allowed?

  • No raster images embedded.
  • No JavaScript.
  • No external references (everything inline).
  • A small profile/version declaration in the <svg> root: baseProfile="tiny-ps" and version="1.2".

Check a domain's BIMI →