Brand Indicators for Message Identification
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Brand Indicators for Message Identification, or BIMI (pronounced: Bih-mee), is a specification allowing for the display of brand logos next to authenticated e-mails. There are two parts to BIMI: a method for domain owners to publish the location of their indicators, and a means for Mail Transfer Agents (MTAs) to verify the authenticity of the indicator.
To implement BIMI, companies need a valid DMARC DNS record with a policy of either quarantine or reject, an exact square logo for the brand in SVG Tiny P/S format, and a DNS TXT record for the domain indicating the URI location of the SVG file. The only supported transport for the SVG URI is HTTPS. The BIMI DNS record is in the following format:
default._bimi TXT "v=BIMI1; l=https://mydomain.com/image.svg;"
As of the October 3, 2020 the following e-mail services are implementing support for BIMI:
Gmail began displaying verified trademarked logos on emails in July 2021.
- "Brand Indicators for Message Identification (BIMI) Draft". Internet Engineering Task Force. IETF Trust. Retrieved 26 July 2021.
- "BIMI Up, Scotty! A look at Brand Indicators for Message Identification (BIMI) Adoption with R and the Alexa Top 1m". Security Boulevard. 2020-02-21. Retrieved 2021-02-08.
- "Implementation Guide". BIMI Group. Retrieved 9 February 2021.
- "BIMI Working Group". BIMI Group. BIMI Group. Retrieved 8 February 2021.
- "Google's Gmail Is Getting Support For A New Email Feature That Allows Brands To Display Their Logos In The Avatar Slot". Retrieved 2021-02-08.
- "BIMI Adoption – October 2020". BIMI Group. Retrieved 9 February 2021.
- Kumaran, Neil (2021-07-12). "Advancing email security for Gmail and beyond with BIMI". Google Workspace. Retrieved 2021-07-12.