BIMI Settings

The BIMI Settings page lets you host the DNS records for your organization's brand logo and mark certificate so that supporting mailbox providers can display your logo next to your emails. BIMI Record Hosting is disabled by default.

Note: BIMI works alongside DMARC, DKIM, and SPF. Most inbox providers only display your logo once your domain's DMARC policy is set to Quarantine or Reject. See DMARC Settings to configure your policy.

Enabling BIMI Record Hosting

While BIMI Record Hosting is disabled, the page shows BIMI Hosting is Disabled, along with a What is BIMI? explanation of the protocol. Click Enable BIMI Record Hosting to turn it on.

A confirmation dialog appears headed Enable BIMI Record Hosting [domain], explaining that a Verified Mark Certificate (VMC) or Common Mark Certificate (CMC) issued by a third-party certificate authority is needed to use BIMI. Confirm to continue.

Verification Status

Once BIMI Record Hosting is enabled, a status indicator at the top of the page shows the current verification state of your domain's BIMI DNS delegation record, along with the date it was last checked. Click Verify to re-check the record immediately, or Setup Instructions to view the DNS records you need to publish.

Note: Until you upload a logo, Setup Instructions are unavailable. Selecting Setup Instructions before uploading a logo shows a Setup Instruction Not Available message asking you to upload a logo first.

Settings

Use the Settings section to upload your BIMI-related files:

Setting	Description
Logo (File type: svg)	Upload the logo associated with your domain. Note: The logo must conform with the BIMI logo specifications.
Authority & Certificate (File type: pem)	Upload your Verified Mark Certificate or Common Mark Certificate. These certificates must be purchased from a certificate authority.

Replacing an existing logo or certificate shows a confirmation dialog headed Changes Made to BIMI Files, warning that the change takes effect immediately. Select Upload Files Now to confirm.

Logo

Upload a logo in SVG format that represents your organization's brand identity, following the logo requirements and taking note of supported mailboxes.

You can also convert an existing image into a compliant BIMI logo:

• Click Convert Image in the upload area to select a non-SVG image (for example, PNG or JPG) and convert it.
• If DMARC Manager finds a logo already published on your domain, a We've found a logo for this domain card offers a Use this Logo button to convert it automatically.

Both options open the Convert Image to SVG wizard:

Step	Description
Resize & Crop	Crop the source image to a square, centered logo.
Refine & Optimize	Adjust conversion settings and preview the generated SVG.
Done	The converted logo is ready to upload.

The Refine & Optimize step offers the following options:

Option	Description
Curve Fitting	Reconstructs the vector by analyzing pixels, using either Polygon or Spline curves.
Color Precision	Limits the number of colors used.
Filter Speckle	Removes visual noise.
Gradient Step	Sets the color difference between gradients.

Click Reset to restore the default options, or Convert & Upload to save the generated logo.

Note: If the generated logo exceeds the 32 KB size limit required for BIMI compliance, adjust the conversion options until it fits before uploading.

Once a logo is uploaded, the page shows the Logo Url, a Logo Preview against white and black backgrounds in both square and circular crops, and the Logo size in bytes.

Certificate

A Verified Mark Certificate (VMC) or Common Mark Certificate (CMC) is not required but may be needed for major inbox providers like Gmail. Use a trusted third-party authority like DigiCert to issue a certificate. See Authority & Certificate for the process.

If your certificate is close to expiring, the page shows a BIMI Certificate is about to expire warning. Once it has expired, it shows a BIMI Certificate has expired error.

Once a certificate is uploaded, the page shows the Authority / Certificate URL, Certificate CN, and Certificate Expiry date.

Logo Requirements

The BIMI logo must comply with the following requirements and restrictions.

Required Specifications

Your BIMI logo file must have:

• Square aspect ratio: 1:1 where viewBox width and height match
• Centered logo: To accommodate displays with rounded corners or circles
• Solid background color: Transparent backgrounds may not display as expected
• File size: Smaller than 32 kilobytes
• File format: Scaled Vector Graphics (SVG), specifically SVG Portable/Secure (SVG P/S)

SVG Structure Requirements

The SVG file must contain the following elements:

• Valid SVG structure
• Proper XML version and encoding declaration
• baseProfile attribute set to "tiny-ps"
• version attribute set to "1.2"
• <title> element specifying the organization's name
• <desc> element for accessibility (optional but recommended)
• Unix format newlines

Your BIMI logo file must NOT contain:

• External links or references (except specified XML namespaces)
• Scripts, animations, or interactive elements
• <style> tags or inline CSS
• width and height attributes
• x= or y= attributes within the <svg> root element

NOTE

In most cases, you can export to SVG Tiny 1.2, but the file will still require modifications to be fully BIMI-compliant. For more information, read the BIMI logo specifications.

If you don't have a compliant SVG logo on hand, use the Convert Image or Use this Logo options described above to generate one from an existing image.

Example XML Structure

<?xml version="1.0" encoding="utf-8"?>
<svg version="1.2" baseProfile="tiny-ps"
  id="svg22" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg"
  xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 216 216"
  xml:space="preserve">
  <title>BIMI Group</title>
  <g id="g16" transform="translate(22.002966,12.468339)" fill="#FFFFFF">
    <path id="path8" fill="#231F20" d="M44…."/>
    <path id="path10" fill="#231F20" d="M57..."/>
    <path id="path12" fill="#231F20" d="M134…..."/>
    <path id="path14" fill="#231F20" d="M159..."/>
  </g>
  <polygon id="polygon18" fill="#00B3E6" points="109,... "/>
  <polygon id="polygon20" fill="#00B3E6" points="82… "/>
</svg>

Mailbox Support

Although the adoption of BIMI is increasing, there are still large Email Service Providers (ESPs) only testing or planning to implement BIMI. We can see a list of ESPs and their current support for BIMI at this Knowledge Base article BIMI Support by Mailbox Provider - BIMI Group.

Authority & Certificate

To obtain a certificate, you'll need to purchase one from a certificate provider. A provider like DigiCert follows this process:

• Prove domain ownership with DNS TXT record
• Provide correctly formatted SVG Logo (Tiny P/S) for Validation
• Verify Company Details
• Verify the Company and Technical representative's identity
• Check Domain Risk
• Receive Certificate in Privacy-Enhanced Mail (PEM) standard
  • Common Mark Certificate (CMC): To qualify for a CMC, you need to prove prior use of the logo over a period greater than 1 year, and the logo must not be legally protected or trademarked.
  • Verified Mark Certificate (VMC): To qualify for a VMC, your logo must be legally trademarked and registered with the appropriate office for your region.

Once you have received your certificate, upload it to DMARC Manager. Go to Domain Management > BIMI Settings and upload the VMC or CMC (.pem file).

Disabling BIMI Record Hosting

While BIMI Record Hosting is enabled, the page shows BIMI Record Hosting is currently enabled. Click Disable BIMI Record Hosting to turn it off.

A confirmation dialog appears headed Disable BIMI Record Hosting for [domain].

Note: Disabling BIMI Record Hosting removes all settings and configurations for this domain, including your logo and certificate. This action cannot be undone.

Related Topics

• DMARC Settings - Configure the DMARC policy required for mailbox providers to display your BIMI logo
• What is BIMI? - An introduction to BIMI and its role in email authentication
• How Does BIMI Work? - Technical details about BIMI implementation and operation
• Why is BIMI Important? - Benefits and significance of implementing BIMI
• Limitations of BIMI - Current constraints and challenges
• Requirements for BIMI - Prerequisites and setup requirements
• BIMI Syntax - Detailed information about BIMI DNS record fields