What is the correct syntax for the BIMI-Selector header?

The BIMI-Selector header is inserted into all of your marketing emails and notifies participating mailbox providers that you have a BIMI record. This header is not required for BIMI to work. If you don't insert this header into your emails, participating mailbox providers will look up your BIMI record using the "default" selector name.

For details on all BIMI technical specifications, please visit:

• bimigroup.org
• BIMI Specifications

Please note that the example below is for illustrative purposes only. Be sure to use your own selector name or your logo will not display.

Components of a BIMI-Selector header

• Header name: The value is always BIMI-Selector. (Required)
• v = Version: the value is always BIMI1. (Required)
• s = Selector name: the value is what you have chosen as your selector name. (Required)
  • The selector name listed in the BIMI-Selector header must match the selector name as you have configured in the BIMI DNS record exactly, or your logo will not display.

Correct syntax for the BIMI-Selector header

<headername>: v=<version>; s=<selectorname>;

For example:

BIMI-Selector: v=BIMI1; s=july2019;