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BIMI

published · September 13, 2026

BIMI (Brand Indicators for Message Identification) is a DNS record at default._bimi.<domain> pointing at a brand logo that some mailbox providers show beside mail from a domain with enforcing DMARC.

BIMI, Brand Indicators for Message Identification, is a specification under which a domain publishes a TXT record at default._bimi.<domain> pointing at an SVG logo, and a participating mailbox provider shows that logo beside messages from the domain — but only when the message passes DMARC with an enforcing policy of quarantine or reject, and, at most providers, only when the logo comes with a verified mark certificate.

What Spaw answers

The domain endpoint reports bimi: whether the record exists. It is read beside dmarc_policy, because a BIMI record on a domain whose policy is none is decoration nobody will display.

What it does not mean

The record does not mean the logo appears anywhere: display depends on the provider, the DMARC policy, the certificate and the sender's reputation. Spaw reads the DNS record and nothing further.

Related

markdown version: /glossary/bimi.md

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