BIMI guide

As of July 2021 Yahoo Inc. and Gmail are using BIMI.

Yahoo Inc. have publicly stated they have discovered an average 10% increase in open rates for email messages with brand logos on them.

BIMI is still in development so standards may change.

Up to date information can be found here: https://bimigroup.org/all-about-bimi/

How can I implement BIMI?

First, authenticate all of your emails with SPF, DKIM and DMARC.

• Ensure for domain alignment.
• Ensure your DMARC policy is enforced for both organisational domain and subdomains - this means either p=quarantine or p=reject.
• Publish a BIMI record for your domain in DNS.

A BIMI record generator can be found here: https://bimigroup.org/bimi-generator/

Gmail requires DMARC to be enforced on the organisational level.

Yahoo Inc. have stated that while they prefer DMARC to be on the organisational level, they will honour records on the sub-domain level.

Verified mark certificate (VMC)

VMCs are a paid-for certification. Up to date information on VMC providers can be found on the BIMI group website.

Gmail requires the VMC for BIMI to work. 

Yahoo Inc. has publicly stated:

'We currently do not require VMCs to be set up for BIMI logos to appear in Yahoo Inc. applications. However if a BIMI record includes a VMC, we might use it to inform the overall BIMI eligibility.’

Logo specification

The logo must be square, and saved as a version of the Scaled Vector Graphic (SVG) format.

Specifically, the SVG logo must follow the restrictions defined by the SVG Tiny 1.2 profile published by the W3C in 2008.

The logo cannot include any <script> tags and should not include any external links.