BIMI best practices for healthcare organizations

HIPAA constrains content and requires encryption in transit and audit trails.

What BIMI is#

BIMI (Brand Indicators for Message Identification) is a DNS record that points to a brand's logo so mailbox providers can display it next to authenticated messages. It depends on DMARC enforcement and, at Gmail and Apple, on a Verified Mark Certificate.

Why it matters#

A verified logo increases open rates and trust, and the DMARC prerequisite forces a domain to finish its authentication work. It is also a visible signal that a message is not a phish.

Implementation plan for healthcare organizations#

1. Reach DMARC p=quarantine (pct=100) or p=reject on the sending domain.
2. Produce your logo as an SVG Tiny 1.2 Portable/Secure file, square, centered, with a solid background.
3. Obtain a VMC or CMC from an approved certificate authority if you want display in Gmail and Apple Mail.
4. Publish default._bimi.yourdomain.com with l= (logo URL) and a= (certificate URL).
5. Validate with a BIMI inspector and send a test to Gmail, Yahoo, and Apple seed accounts.

default._bimi.example.com.  IN TXT  "v=BIMI1; l=https://example.com/brand/logo.svg; a=https://example.com/brand/vmc.pem"

Priorities specific to healthcare organizations#

HIPAA constrains content and requires encryption in transit and audit trails. Weight your effort toward the steps above that address this constraint first, and measure with metrics that match how healthcare organizations generate value from email.

Common mistakes#

• Publishing BIMI while DMARC is still at p=none; providers ignore the record.
• Uploading a standard SVG exported from a design tool; it must be the Tiny PS profile with no scripts or external references.
• Hosting the logo on a non-HTTPS URL or behind a redirect.

Frequently asked questions#