BIMI Record Checker
Check if a domain has a BIMI record and preview the brand logo displayed in email clients.
What is a BIMI record?
BIMI (Brand Indicators for Message Identification) is a DNS TXT record atdefault._bimi.yourdomain.com that points to a square logo file. Supporting email clients display that logo next to authenticated messages from the domain, giving recipients a visual signal that the mail is genuinely from who it claims to be — but only once DMARC is already enforced.
How to read the result
l= is the URL of the logo SVG, which the checker previews directly. a= (Authority Evidence) points to a Verified Mark Certificate, required by Gmail and some other providers before they will render the logo. A record with l but no a will still work in clients that don't require a VMC.
Common failure causes
- DMARC hasn't reached
p=quarantineorp=rejectat 100%, which most providers require before showing a BIMI logo at all. - The logo file isn't valid Tiny PS SVG, or isn't served over HTTPS with the correct content type.
- No VMC configured, so Gmail and Yahoo won't display the logo even though the record itself is valid.
- The logo isn't square, which some clients silently reject.
Frequently asked questions
Does BIMI work without a VMC certificate?
It depends on the mailbox provider. Some clients will show a logo from a BIMI record alone once DMARC is enforced. Gmail and Yahoo, however, require a Verified Mark Certificate (VMC) — a certificate issued by an authorized certificate authority attesting the logo is your registered trademark — before they will display it.
Why isn't my logo showing in Gmail?
The most common reasons are a missing VMC, a DMARC policy that hasn't reached enforcement (quarantine or reject) at pct=100, or a logo file that isn't valid Tiny PS SVG. Gmail also only rolls BIMI out gradually per domain, so a correct setup can take time to appear.
What image format does BIMI require?
A square SVG file conforming to the Tiny PS profile — a restricted subset of SVG 1.2 Tiny that strips scripting, external references, and other features that would make the file unsafe to render in an email client. Most general-purpose SVG exports need to be reprocessed to comply.
Keep an eye on this automatically
A one-off check tells you how things look right now. DMARC.WS collects your aggregate reports continuously, shows you which senders are failing authentication, and alerts you when something changes.
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