Star Computers

BIMI Lookup

Find and parse a domain's BIMI record. Shows the logo URL, Verified Mark Certificate, and previews the SVG as mail clients will render it.

DNS Security

Look up BIMI

Queries the default._bimi.<domain> TXT record and parses the logo (l=) and VMC (a=) locations.

What BIMI is

Brand Indicators for Message Identification — a DNS-published pointer to a trademark-verified SVG logo that supporting mail clients (Gmail, Apple Mail, Yahoo, Fastmail) show next to authenticated messages.

Prerequisites

  • DMARC enforcement — p=quarantine or p=reject with pct=100. No DMARC, no BIMI.
  • SVG Tiny P/S logo — Profile for BIMI, hosted at a publicly reachable URL.
  • VMC — a Verified Mark Certificate from a CA like DigiCert or Entrust, referenced in the a= tag. Gmail and Apple Mail require one.

How the lookup works

  • Queries <selector>._bimi.<domain> TXT (default selector: default).
  • Parses v=BIMI1; l=<logo>; a=<vmc>;.
  • Attempts to preview the SVG in-page — subject to CORS on the image URL.