Summary
Updating a BIMI logo for Yahoo requires several steps and considerations. First, update the logo file and URL on your server. Ensure your domain has DMARC set to p=quarantine or p=reject, and that a BIMI policy is published. You might need to request Yahoo to switch to your BIMI logo, as they sometimes use their own. The logo should be a registered trademark, often requiring a VMC. Use an SVG file (ideally 'SVG Tiny Portable/Secure'), designed to look clear even at smaller sizes like 96x96 pixels and render well when cropped to a circle. Update the DNS TXT record to point to the new SVG location. Be aware of potential VMC validation and SVG formatting issues during deployment, and use testing tools to verify display across different email clients.
Key findings
- DMARC Enforcement: DMARC must be set to p=quarantine or p=reject for BIMI to work.
- SVG Format Required: Logo must be in SVG format (ideally 'SVG Tiny Portable/Secure'), and should be a vector graphic.
- VMC May Be Needed: A Verified Mark Certificate (VMC) might be necessary to validate the logo is a registered trademark.
- Yahoo Logo Logic: Yahoo may initially use its own logic for logos; a request to switch to the BIMI logo may be needed.
- Update DNS Record: To change the logo, update the DNS TXT record with the new SVG file location.
Key considerations
- Logo Clarity: Ensure the logo looks crisp and recognizable at small sizes, as it scales.
- SVG Validation: Address common issues by carefully validating SVG formatting and VMC (if applicable).
- Square Aspect Ratio: Design the logo with a square aspect ratio, ensuring it looks good when cropped to a circle.
- Test Display: Test the logo's display in different email clients after updating to ensure proper rendering.
- Update Logo File: Update the logo file and URL on your server.
What email marketers say
11 marketer opinions
Updating a BIMI logo for Yahoo involves replacing the SVG file on your server. However, Yahoo might use its own logic to display logos initially, requiring you to request they use your BIMI logo once it's set up. DMARC enforcement (p=quarantine or p=reject) is crucial for BIMI compliance. Logos should be designed as square aspect ratio SVG files that render well when cropped to a 400-pixel diameter circle. Logo size is less important than clarity, ensuring it remains crisp and recognizable even at small sizes. VMCs may be required to validate ownership of the trademarked logo.
Key opinions
- SVG File Update: Updating the BIMI logo involves replacing the SVG file on your server with the new version.
- Yahoo Logic: Yahoo may use its own logic to display logos initially, requiring a request to use the BIMI logo.
- DMARC Enforcement: DMARC must be enforced (p=quarantine or p=reject) for BIMI to function correctly.
- Logo Shape: Logos should be square aspect ratio and render well cropped as a circle.
- VMC Requirement: VMCs (Verified Mark Certificates) validate logo ownership and may be required.
Key considerations
- Logo Clarity: Ensure the logo remains crisp and recognizable even at small sizes due to scaling.
- Testing: Use testing tools to ensure the logo appears correctly across different email clients.
- Yahoo Intervention: Be prepared to request Yahoo to switch to using the BIMI logo after initial setup and DMARC enforcement.
Marketer view
Email marketer from EmailDrips states the BIMI logo is designed to scale, so the size isn't the issue - it's the clarity. The logo needs to look crisp and clean even when it's shrunk to a small size in the inbox.
27 Aug 2023 - EmailDrips Website
Marketer view
Email marketer from Mailosaur recommends testing tools to ensure the logo appears correctly in different email clients and contexts after you update it.
19 Aug 2023 - Mailosaur Website
What the experts say
5 expert opinions
Updating a BIMI logo involves updating the logo file and the URL. DMARC enforcement (p=quarantine or p=reject) and a published BIMI policy are essential; otherwise, the domain doesn't qualify. Recommended logo size is 400x400, using a true vector SVG format. Common deployment issues include VMC validation and SVG formatting problems.
Key opinions
- Logo Update Process: Update the logo file and its URL for BIMI logo changes.
- DMARC Requirement: DMARC policy must be enforced (p=quarantine or p=reject) for BIMI to function.
- BIMI Policy: A BIMI policy must be published for the organization domain.
- Logo Size Recommendation: A logo size of 400x400 is recommended.
- SVG Format: Use a true vector SVG format, not a PNG in an SVG wrapper.
Key considerations
- VMC Validation: Verify VMC validation is correct.
- SVG Formatting: Ensure correct SVG formatting to avoid display issues.
Expert view
Expert from Word to the Wise explains BIMI requires a DMARC policy at p=quarantine or p=reject, stating that without this level of enforcement, the BIMI logo will not display.
22 Nov 2021 - Word to the Wise
Expert view
Expert from Email Geeks explains the domain doesn't qualify because DMARC is set to p=none and needs to be enforced. Also, there is no BIMI policy published for the organization domain.
30 Dec 2023 - Email Geeks
What the documentation says
4 technical articles
Updating a BIMI logo involves several technical requirements. A VMC is needed, confirming the logo is a registered trademark. The logo must be in SVG format, specifically the 'SVG Tiny Portable/Secure' profile, and should be a vector graphic. To change the logo, update the DNS TXT record where the BIMI record is stored, adjusting the 'a' field to point to the new SVG file location. Logos are typically displayed at 96x96 pixels, so design for legibility at that size.
Key findings
- VMC Requirement: A Verified Mark Certificate (VMC) is required to use a BIMI logo.
- Registered Trademark: The logo used for BIMI must be a registered trademark.
- SVG Format: The logo image must be in SVG format.
- SVG Profile: The SVG must be in the 'SVG Tiny Portable/Secure' profile.
- DNS Record Update: Changing the BIMI logo requires updating the DNS TXT record.
- Logo Display Size: Logos are typically displayed at 96x96 pixels.
Key considerations
- Vector Graphic: Ensure the SVG is a vector graphic and not a raster image embedded in an SVG container.
- Legibility at Small Size: Design the logo with legibility in mind, as it will be displayed at a small size.
- DNS Update Accuracy: Ensure the DNS TXT record is updated correctly with the new SVG file location.
Technical article
Documentation from BIMI Group explains that logos are typically displayed at 96x96 pixels. So it should be designed with legibility in mind at that size.
6 Feb 2025 - BIMI Group Website
Technical article
Documentation from Entrust explains the SVG needs to be in the 'SVG Tiny Portable/Secure' profile. It should be a vector graphic and not a raster image embedded in an SVG container.
25 Mar 2022 - Entrust Website
Can BIMI logos be animated and how do Google profile images interact with BIMI?
Do DMARC and BIMI require p=reject to be present on the organizational domain?
How can I display a logo in Yahoo Mail without DMARC/BIMI records set?
How do I implement BIMI and get my logo to show in Gmail and Yahoo Mail?
How do I troubleshoot BIMI logo not showing after implementation?
How do I update my BIMI logo on Yahoo Mail?
How long does it take for BIMI logo to show in Yahoo and where is the BIMI status added?
What are the requirements for BIMI, and how do I troubleshoot authentication failures?
