ciunkos.com/Glossary

Email authentication

BIMI

Your logo next to your messages in supporting inboxes, once DMARC is enforced.

BIMI is a DNS record pointing to an SVG logo. It requires DMARC at quarantine or reject, and Gmail and Apple Mail show the logo only with a mark certificate (VMC or CMC). It does not improve deliverability by itself; it rewards domains that already authenticate properly.

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Related terms

  • DMARC: The policy that tells receivers what to do when mail fails SPF and DKIM, and where to report.
  • VMC and CMC: Mark certificates that prove you own the logo BIMI shows: Verified (trademark) or Common (12 months of use).

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