Free BIMI Checker
Validate Your BIMI Record, Logo & Certificate
Run a free check to verify your BIMI record and certificate, and ensure your brand logo is ready to appear in supported inboxes.
Enter your domain to perform a live BIMI lookup and validate syntax, or paste a BIMI record to check it before publishing.
About Free BIMI Checker by DMARKOFF
Our Free BIMI Checker looks up your domain's BIMI record, validates its syntax, verifies your logo URL and certificate, and confirms they're published correctly and accessible.
If the tool detects a missing BIMI record, invalid syntax, an inaccessible logo, or a certificate issue, you'll see exactly what needs attention and how to fix it.
What Is a BIMI Record?
BIMI (Brand Indicators for Message Identification) is a DNS TXT record that lets your brand logo appear next to your emails in supporting inboxes, like Gmail and Apple Mail. It doesn't replace SPF, DKIM, or DMARC. Instead, it builds on them and requires them to be properly configured.
A BIMI record has two main parts:
• Logo URL (l=) — a link to your brand's logo, published as an SVG Tiny PS file. This is required.
• Certificate (a=) — an optional certificate that proves ownership of the logo. This can be either a Verified Mark Certificate (VMC) or, more recently, a Common Mark Certificate (CMC).
A BIMI record containing only a logo URL is valid, but many mailbox providers require a certificate before they'll display your logo.
Example of a Valid BIMI Record
A valid BIMI record follows the correct syntax and points to your brand's logo and certificate, so supporting mail clients can display them:
In this example:
v=BIMI1 — identifies the record as BIMI.
l= — points to your brand logo (must be a valid, accessible SVG Tiny PS file).
a= — points to your certificate (VMC or CMC), proving logo ownership.
How Does BIMI Work?
• The receiving server verifies that your domain enforces DMARC (p=quarantine or p=reject).
• It retrieves your BIMI record from default._bimi.yourdomain.com.
• It validates the SVG logo referenced by the l= tag.
• If present, it validates the certificate referenced by the a= tag.
• If all requirements are met, your logo can be displayed in supported inboxes.
VMC vs. CMC
The BIMI standard currently supports two certificate types:
VMC (Verified Mark Certificate) — requires a registered trademark, and displays your logo with Gmail's verified checkmark. VMCs are broadly supported across mailbox providers.
CMC (Common Mark Certificate) — doesn't require a registered trademark, making BIMI accessible to a wider range of senders. CMCs are more affordable due to less stringent validation, but the logo appears in Gmail without the verified checkmark, and CMCs are currently supported only by Gmail.
If you want maximum logo visibility across multiple email clients, a VMC is still the more broadly supported option. A CMC is a good fit if you don't have a registered trademark and mainly care about Gmail.
What the BIMI Checker Detects
With the DKIM test tool, you’ll see a clear report of your DKIM configuration:
✓ Confirms your domain exists and has valid name servers
✓ Checks whether a BIMI record exists for your domain
✓ Verifies your BIMI record is published at default._bimi.yourdomain.com
✓ Validates your BIMI record syntax and tag structure
✓ Confirms the l= tag points to a valid, publicly accessible BIMI-compliant SVG Tiny PS logo
✓ Confirms the a= tag points to a valid and accessible Verified Mark Certificate (VMC)
When a check fails, whether it's a missing record, broken syntax, an unreachable logo, or an invalid certificate, you'll get the specific fix to apply.
Benefits of Regular BIMI Checks
• Confirm your brand logo actually displays in supporting inboxes
• Catch a broken or expired logo URL before it silently disables your logo
• Catch an expired or invalid VMC before it affects display in supporting inboxes
• Strengthen brand trust and recognition in the inbox
• Support broader anti-phishing efforts alongside DMARC
Why Use This BIMI Checker
Free, no signup — run a check without creating an account.
Specific fixes — get the exact correction to apply, not just a pass/fail.
Session history — compare BIMI results across multiple domains during your current session.
FAQ
BIMI support varies by mailbox provider. Gmail, Apple Mail, Yahoo Mail, Fastmail, AOL, Zoho Mail, and some other providers support BIMI, though their requirements differ. Gmail requires a valid VMC or CMC to display a logo, while some providers may display a logo using the l= tag alone. Microsoft Outlook and Microsoft 365 do not currently support BIMI.
A certificate isn't always required for a BIMI record to validate, but without one, most major mailbox providers, including Gmail, won't display your logo. A valid VMC or CMC is what unlocks actual logo display in the inbox.
BIMI logos must be published as SVG Tiny PS files, a restricted subset of SVG designed for security and consistent rendering, hosted over HTTPS. Standard SVG, PNG, or JPG files won't validate.
Yes. BIMI requires your domain to enforce DMARC with a policy of at least p=quarantine or p=reject. Domains using p=none aren't eligible for BIMI logo display with supporting mailbox providers.
The Free BIMI Checker identifies exactly what's failing, whether it's a missing record, invalid syntax, an unreachable logo, or an invalid certificate, and shows the specific fix to apply. Update the relevant record or file, then rerun the check to confirm it passes.
Not directly. BIMI doesn't determine whether an email reaches the inbox. That depends on a complex of factors such as SPF, DKIM, DMARC, sender reputation, recipient engagement, and more. What BIMI does is increase trust and recognition once an email is already in the inbox, since a verified logo can make recipients more likely to open and engage with your emails.
A valid BIMI record alone isn't enough for your logo to appear. Most mailbox providers also require DMARC enforcement (typically p=quarantine or p=reject), a BIMI-compliant SVG logo, and, in some cases, a valid VMC or CMC. Even when all requirements are met, logo display ultimately depends on the receiving mailbox provider, and not every provider supports BIMI.