BIMI stands for Brand Indicators for Message Identification. It’s a standard that enables brands to display their logos next to authenticated emails in recipients’ inboxes. This can help recipients quickly recognize and trust the source of the email.

A BIMI record is a DNS TXT record that specifies the location of the brand’s logo image and provides other metadata needed for BIMI implementation. It typically includes:

  1. v: The version of the BIMI record format being used.
  2. l: The location of the SVG image file containing the brand’s logo.
  3. a: An assertion about the authenticity of the logo, usually a DKIM signature.
  4. h: A hash of the SVG image file for integrity verification.

Here’s an example of how a BIMI record might look:

v=BIMI1; l=; a=rsa-sha256; h=sha256:abcdef123456...

This record indicates that version 1 of the BIMI standard is being used. The logo is located at, and it’s authenticated with an RSA-SHA256 signature. The hash of the logo file is also provided for integrity verification.

Implementing BIMI can enhance brand recognition and trustworthiness in email communications, but it requires coordination between the brand owner, the email sender, and the email service provider.

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