Completed our email security series, let's explore Brand Indicators for Message Identification (BIMI), which enhances brand recognition and trust in email inboxes.
What is BIMI?
BIMI allows domain owners to display their brand logo in recipients' email clients, provided emails pass DMARC authentication, boosting trust and engagement.
How Does BIMI Work?
BIMI requires DMARC with p=quarantine or reject. The domain publishes a BIMI record in DNS, pointing to a secure logo URL. Email clients display the logo for authenticated emails, enhancing visual trust.
Setting Up BIMI
- Ensure DMARC is set to p=quarantine or reject.
- Prepare a square SVG logo meeting BIMI specs.
- Host the logo on a secure server (HTTPS).
- Publish the BIMI record, e.g., "v=BIMI1; l=https://example.com/logo.svg".
- Optionally, obtain a Verified Mark Certificate (VMC) for broader display.
Benefits of BIMI
- Enhances brand visibility in inboxes, increasing recognition.
- Builds trust, reducing phishing risks.
- May improve open rates with visual appeal.
Challenges and Considerations
- Requires DMARC enforcement, adding setup complexity.
- Logo must meet strict specifications; VMC can be costly.
- Adoption is growing but not universal across email clients.
Conclusion
BIMI offers a unique blend of security and branding. Together, TLS 1.3, SPF, DKIM, DMARC and MTA-STS create a robust defence for your email ecosystem then BIMI enhances brand recognition on top of those.
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