What BIMI does
With BIMI, mailboxes such as Gmail, Yahoo and Apple Mail show your logo next to your mails. It requires a strict DMARC policy.
How it works
BIMI (Brand Indicators for Message Identification) is a TXT record at default._bimi.<your domain> that points to your logo. Supporting mailboxes show it next to your mails.
v=BIMI1; l=https://your-domain.example/logo.svg; a=https://your-domain.example/vmc.peml= points to the logo, a= to the certificate for it.
BIMI does not improve delivery directly. It makes your mails recognisable in the inbox and requires clean authentication, which pays off anyway.
What matters
- DMARC with
p=quarantineorp=rejectfor 100 % of mails. Withp=noneno mailbox shows the logo. - Logo as SVG in the Tiny PS profile: square, without scripts and external references, with
baseProfile="tiny-ps". The file must be reachable over https. - A certificate for the logo (VMC or CMC) if it should appear at Gmail and Apple Mail. A VMC requires a registered trademark, a CMC does not. Yahoo also shows logos without a certificate.
- Cost. The certificates cost money every year; without them the effect is limited to few mailboxes.
How to set it up
- First bring SPF, DKIM and DMARC to
quarantineorreject. - Have the logo made as SVG Tiny PS, for example by your agency, and put it on your website.
- If needed, apply for a VMC or CMC at a certification authority.
- Enter the BIMI record in the DNS settings of your domain.