BIMI Logo Preparation and Hosting

BIMI (Brand Indicators for Message Identification) enables your brand’s logo to be displayed in recipients’ inboxes, increasing recognition and trust. However, to qualify for BIMI display, your logo must meet strict technical requirements regarding format, size, and accessibility.

• File Format Requirement: Use SVG (Scalable Vector Graphics) format, specifically SVG Tiny Portable/Secure (SVG Tiny PS) compliant files.
• Aspect Ratio: The logo must have a square aspect ratio (1:1) to display correctly in all email clients.
• File Size Limit: Keep the file size under 32 KB to ensure quick loading and compatibility.
• Content Restrictions: Avoid animations, scripting, or embedded raster images within the SVG file, as these are not supported.

• Design Simplicity: Opt for simple, bold designs that remain clear and legible at small sizes.
• Color Contrast & Background: Make sure the logo has sufficient color contrast and no background fills to ensure visibility across various inbox themes.
• Vector Elements & Transparency: Ensure all logo elements are vector-based with no transparency issues to maintain display consistency.

• Accessibility Enhancements: Include descriptive title and description tags within the SVG to improve accessibility for screen readers.
• Color Accessibility: Avoid color combinations that may be difficult for users with visual impairments to distinguish.

• Secure Hosting: Host the logo on a secure server with HTTPS enabled to ensure encrypted and trustworthy access.
• Public Accessibility: The logo URL specified in your BIMI DNS record must be publicly accessible without authentication or firewalls blocking access.
• Reliable Hosting & CDN: Use reliable hosting services or Content Delivery Networks (CDNs) to guarantee high availability and low latency globally.

• Company-Managed Hosting: Company-managed web servers with SSL/TLS certificates.
• Cloud Storage Providers: Cloud storage providers like Amazon S3, Google Cloud Storage, or Azure Blob Storage with public HTTPS access.
• Specialized BIMI Hosting: Specialized BIMI hosting services provided by some certificate authorities or vendors.

• BIMI Validation Tools: Use BIMI testing tools to validate the SVG format, accessibility, and correct DNS record configuration.
• Test Email Deliverability: Perform test emails to various email clients (Gmail, Yahoo, Apple Mail) to verify logo display.
• Continuous Monitoring: Monitor DNS health and certificate validity continuously to prevent display disruptions.

• SVG Format Errors: Incorrect SVG format causing rendering errors.
• File Size Limits: Logo file size exceeding limits, leading to non-display.
• Hosting Security: Hosting over HTTP instead of HTTPS, causing security blocks.
• DNS Misconfigurations: DNS record misconfigurations pointing to incorrect or inaccessible logo URLs.

Proper logo preparation and secure hosting are foundational to leveraging BIMI's full potential. By adhering to technical specifications and best hosting practices, your brand can project trust and consistency in recipients' inboxes.