How to publish BIMI
A practical overview of what is involved in publishing BIMI for a domain.
What BIMI depends on
BIMI sits on top of a stronger email authentication posture. In practice, that usually means getting DMARC into a healthy enforced state first.
BIMI records are not a substitute for SPF, DKIM, and DMARC.
What the record includes
A BIMI record is usually published under default._bimi and can include a logo URL and an authority or certificate reference.
The exact ecosystem requirements can vary depending on the receiving mail client.
What to validate
- That the BIMI TXT record exists
- That the tags are correctly formatted
- That the logo reference is valid
- That DMARC posture is strong enough to support BIMI goals