Deliverability
BIMI record checker
Look up a domain's BIMI record and the DMARC policy behind it, since a logo behind p=none never shows anywhere.
Check whether a domain publishes a BIMI record, and whether its DMARC policy is strong enough for mailbox providers to actually show the logo.
Instructions
How to use this tool
- 01Enter the domain that appears in your From address.
- 02Read the DMARC line first. BIMI requires p=quarantine or p=reject; at p=none the record below it is decorative.
- 03Check the record tags: l= must be an https URL to an SVG logo, and a= optionally points at a Verified Mark Certificate.
- 04Validate the SVG separately with your BIMI or VMC provider. Browsers cannot fetch it cross-origin, so this tool checks the record, not the file.
Background
What BIMI is, and the prerequisite that gates it
BIMI is a TXT record at default._bimi.yourdomain.com that tells participating mailbox providers where to fetch your logo: v=BIMI1 with l= pointing at an SVG, and optionally a= pointing at a Verified Mark Certificate. When everything lines up, your logo appears beside your messages in the inbox list instead of a monogram.
The part that catches teams out is the prerequisite: BIMI only functions on domains whose DMARC policy is quarantine or reject. That is the point of the standard, since the logo is a visual statement that the sender is authenticated, and it is why this tool prints the DMARC verdict above the BIMI record rather than below it. A perfect record behind p=none shows nothing anywhere.
Background
The SVG and certificate requirements
The logo file has real constraints: it must be SVG Tiny PS, a restricted profile that forbids scripts, external references, and most of what design tools emit by default. An SVG exported straight from a design tool usually needs conversion, and a logo that violates the profile simply does not show, without an error you can see.
Gmail goes further and requires a Verified Mark Certificate, issued against a registered trademark of the logo, before it displays anything. Yahoo displays some logos without one. Apple Mail requires the certificate as well. Whether the certificate cost is worth it is a brand decision, but without it BIMI's largest audience does not see the logo.
FAQ
Frequently asked questions
Why is my BIMI logo not showing in Gmail?
The usual reasons, in order: your DMARC policy is none rather than quarantine or reject, you have no Verified Mark Certificate, which Gmail requires, the SVG is not valid SVG Tiny PS, or the record's l= URL is not reachable over https. Any one of them keeps the logo hidden.
Does BIMI require DMARC?
Yes, at enforcement. The domain's DMARC policy must be quarantine or reject; monitoring mode does not qualify. Providers also expect the policy to apply fully rather than to a percentage.
Do I need a Verified Mark Certificate?
For Gmail and Apple Mail, yes: they only display logos backed by a VMC or CMC. Yahoo can display a logo from the record alone. The certificate is issued against a registered trademark of the logo, which is the slow and expensive part.
What is a BIMI selector?
The label before _bimi in the DNS name, letting a domain publish more than one logo record. Almost every deployment uses the selector named default, which is what this tool queries; a custom selector would need the sender to specify it in the BIMI-Selector header.
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