P Postulate

Free BIMI Record Checker

Look up and validate any domain's BIMI record. Preview your brand logo, check VMC certificate, and verify DMARC enforcement.

What is BIMI?

Brand Indicators for Message Identification (BIMI) is an email standard that lets domain owners display their brand logo next to authenticated emails in supporting clients like Gmail, Apple Mail, Yahoo Mail, and Fastmail. It builds on top of DMARC enforcement to give recipients a visual indicator that the message is legitimate.

A BIMI record is a TXT record published at default._bimi.yourdomain.com that starts with v=BIMI1 followed by semicolon-separated tags defining your logo URL and optional Verified Mark Certificate (VMC). BIMI requires your domain to have a DMARC policy of quarantine or reject.

How it looks in your inbox

P
Postulate 10:30 AM

Your API key has been activated

A
Acme Corp 9:15 AM

Invoice #4821 is ready for review

J
Jane Smith Yesterday

Re: Meeting notes from Tuesday

Brand logo via BIMI Verified checkmark (VMC)

Tag Quick Reference

Tag Description
v Version — must be "BIMI1"
l Logo location — HTTPS URL to SVG Tiny PS image
a Authority evidence — HTTPS URL to PEM-encoded Verified Mark Certificate (VMC)

Requirements

  • ✓ DMARC policy of quarantine or reject
  • ✓ SVG logo in Tiny PS profile (max 32KB recommended)
  • ✓ Optional: Verified Mark Certificate (VMC) from DigiCert or Entrust for the verified checkmark in Gmail

Supported Email Clients

Gmail (with VMC for verified checkmark), Apple Mail, Yahoo Mail, and Fastmail all support BIMI logo display. Support continues to grow as more providers adopt the standard.

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