BIMI works by layering on top of DMARC . A mailbox provider checks: Whether DMARC is at p=quarantine or p=reject . Whether the domain publishes a valid BIMI record. Whether the SVG logo meets BIMI specifications. Whether a Verified Mark Certificate is required and valid. If everything aligns the provider may display the logo.

How does BIMI work?

BIMI works by layering on top of DMARC. A mailbox provider checks:

Whether DMARC is at p=quarantine or p=reject.
Whether the domain publishes a valid BIMI record.
Whether the SVG logo meets BIMI specifications.
Whether a Verified Mark Certificate is required and valid.
If everything aligns the provider may display the logo.

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