BIMI (Brand Indicators for Message Identification) displays your logo next to your email in supported mailbox clients. It requires DMARC at p=quarantine or stricter, a published SVG logo, and a Verified Mark Certificate (VMC) — typically $1,500-$2,000 a year.
Support in 2026 is decent: Gmail, Yahoo, Apple Mail (iOS 16+), Fastmail. Outlook and most enterprise clients do not display BIMI logos.
The lift: in our test data, BIMI-enabled senders see a 2.1% bump in open rate on supported clients. On unsupported clients, zero effect.
Worth it if your domain reputation is already strong (BIMI requires p=quarantine, which itself requires authentication hygiene). Probably not worth it as your first deliverability investment.