Using BIMI (Brand Indicators for Message Identification) with Postmark

BIMI—short for Brand Indicators for Message Identification—is an emerging email standard that allows your brand’s logo to appear next to messages in supported inboxes (like Gmail and Yahoo). It’s designed to help recipients quickly recognize your emails as legitimate, adding an extra layer of trust and visual recognition.

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What’s required for BIMI

To use BIMI, you’ll need to meet a few authentication and branding requirements on your domain:

1. SPF, DKIM, and DMARC configured

   • These three authentication methods prove your emails come from your domain.

   • Postmark fully supports all three.

   • For help, see: Setting up domain authentication in Postmark.

2. An SVG logo file

   • You’ll need a square SVG logo published at a specific, publicly accessible URL on your domain (for example: https://yourdomain.com/.well-known/bimi/logo.svg).

3. A Verified Mark Certificate (VMC) (optional but required for Gmail)

   • Some inbox providers—most notably Gmail—require a VMC from a trusted certificate authority before displaying your logo.

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Does Postmark support BIMI?

Postmark supports the email authentication standards that BIMI relies on: SPF, DKIM, and DMARC. However, the actual logo display happens on the receiving mail client’s side (such as Gmail, Yahoo, or Fastmail). Postmark doesn’t control whether your logo appears—that decision is made by the recipient’s inbox provider.

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How to set up BIMI

Here’s a detailed guide that explains what BIMI is and how to get started:
👉 https://postmarkapp.com/blog/what-the-heck-is-bimi

For Gmail specifically, some senders have found success adding their logo using a Google account profile image. While this isn’t true BIMI, it can help your logo appear next to messages in Gmail: 👉 https://doglingcreative.com/gmail-profile-photo/

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Important notes

• There’s no guaranteed way to make your logo appear in inboxes. Each provider decides whether and when to display BIMI logos.

• Meeting all BIMI and authentication requirements gives you the best chance of success.

• Even without BIMI, having SPF, DKIM, and DMARC in place significantly improves your email deliverability and trustworthiness.

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In short

Postmark helps you meet the technical requirements for BIMI by supporting SPF, DKIM, and DMARC. From there, you’ll publish your BIMI logo and (optionally) obtain a Verified Mark Certificate. While the final display is up to the inbox provider, these steps give your emails the best possible shot at showing your brand logo in recipients’ inboxes.