Open knowledge base
Learn the standard.
Keep the knowledge.
Practical BIMI guidance built from primary specifications and official provider documentation—not a sales funnel.
Set up BIMI from start to finish
A practical four-step path from enforced DMARC to a published BIMI assertion.
Read guideDMARC requirements for BIMI
Understand enforcement, alignment, percentages, and subdomain policy before publishing a logo.
Read guideCreate a BIMI-compatible SVG logo
The Tiny PS requirements, common export problems, and practical compatibility guidance.
Read guideVMCs, CMCs, and self-asserted BIMI
What mark certificates prove, when providers require them, and where they fit in the record.
Read guideHow guidance is maintained
BIMI is still an active Internet-Draft and mailbox policies change. We label provider-specific claims, link primary sources, and review material when the public draft changes.