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BIMI Record Checker

Verify your domain's BIMI record configuration. Check your brand logo and VMC certificate setup for inbox logo display.

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What is BIMI?

Brand Indicators for Message Identification (BIMI) is an emerging email specification that enables organizations to display their brand logo alongside authenticated emails in recipients' inboxes. It provides a visual indicator of trust, helping recipients quickly identify legitimate emails from brands they recognize.

BIMI works by leveraging existing email authentication protocols. Your domain must have properly configured SPF, DKIM, and DMARC records with a DMARC policy of "quarantine" or "reject" before BIMI can function. Once authentication is in place, you publish a BIMI DNS record pointing to your logo and optional Verified Mark Certificate (VMC).

Major email providers including Gmail, Yahoo Mail, Apple Mail, and Fastmail support BIMI, though requirements vary. Gmail requires a VMC issued by a trusted certificate authority, while other providers may display logos without one. BIMI adoption is growing as brands seek to improve email engagement and combat phishing.

Frequently Asked Questions

What is BIMI?
BIMI (Brand Indicators for Message Identification) is an email specification that allows brands to display their logo next to authenticated emails in supporting mailboxes. It builds on existing email authentication protocols (SPF, DKIM, and DMARC) to verify that an email genuinely comes from the brand it claims to be from, then displays the brand's logo as a visual trust indicator.
Which email clients support BIMI?
BIMI is supported by Gmail, Yahoo Mail, Apple Mail (iOS 16+/macOS Ventura+), Fastmail, and several other clients. Gmail requires a Verified Mark Certificate (VMC) for logo display. Yahoo Mail and Fastmail support BIMI without a VMC. Apple Mail supports BIMI with or without a VMC. Outlook does not currently support BIMI but Microsoft has indicated future support.
Do I need a VMC certificate for BIMI?
A Verified Mark Certificate (VMC) is required by Gmail for BIMI logo display. VMCs are issued by approved certificate authorities (DigiCert and Entrust) and verify your organization's ownership of a trademarked logo. For Yahoo, Fastmail, and Apple Mail, VMC is optional — your logo will display without it. If Gmail is a significant channel for your email, a VMC (typically $1,000-1,500/year) is worth the investment.
What image format does BIMI require?
BIMI requires logos in SVG Tiny Portable/Secure (SVG Tiny PS) format — a restricted subset of SVG 1.2 Tiny. The logo must be square, have a solid opaque background (no transparency), contain no external references, no scripts, no animations, and be under 32KB. Standard SVG files must be converted using tools like Inkscape or online SVG Tiny PS converters before they can be used with BIMI.
What are the BIMI requirements for my domain?
To implement BIMI your domain needs: (1) a DMARC record with policy set to 'quarantine' or 'reject' (p=quarantine or p=reject), (2) valid SPF and DKIM records, (3) an SVG Tiny PS format logo hosted at a publicly accessible HTTPS URL, (4) optionally a VMC certificate if you want Gmail support. Once these are in place, add a DNS TXT record at default._bimi.yourdomain.com with v=BIMI1; l=https://your-logo-url.com/logo.svg

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