Understanding why your BIMI (Brand Indicators for Message Identification) logo appears in Gmail but not in Yahoo or AOL can be a complex issue, often pointing to differences in how each mailbox provider implements and enforces BIMI standards. While BIMI aims to standardize brand logo display, not all providers have identical requirements, especially concerning Verified Mark Certificates (VMCs) and sender reputation.
Key findings
Provider-specific rules: Each mailbox provider, including Gmail, Yahoo, and AOL, has its own unique set of internal rules regarding sender reputation, email volume, and other proprietary criteria that influence whether a BIMI logo is displayed. BIMI implementation requirements can vary significantly.
VMC requirements: Gmail primarily supports BIMI logos when a Verified Mark Certificate (VMC) is in place. While other providers like Yahoo and AOL may display logos without a VMC (self-asserted BIMI records), their policies can change, or they might prioritize senders with VMCs.
SVG file format: Incorrectly formatted SVG files are a common reason for BIMI logo display failures. The SVG file must adhere to specific profiles (e.g., SVG Tiny P/S) and should not contain bitmaps.
Sender reputation: Your domain's reputation plays a critical role. Low sender volume or poor reputation could prevent your BIMI logo from appearing, even if all technical requirements are met, particularly with providers like Yahoo.
Key considerations
Verify DMARC policy: Ensure your DMARC policy is set to at least p=quarantine or p=reject, as a p=none policy is generally insufficient for BIMI display.
Check SVG compliance: Use a BIMI validation tool (like the one provided by the BIMI Group) to ensure your SVG logo meets all technical specifications.
Assess sender reputation: Monitor your domain's reputation with various mailbox providers. A strong, consistent sending history is crucial for BIMI visibility, particularly with Yahoo and AOL.
Consider a VMC: While not always strictly required by all providers, obtaining a Verified Mark Certificate (VMC) significantly increases the likelihood of your logo appearing across all supporting inboxes.
What email marketers say
Email marketers often encounter frustration when their carefully implemented BIMI logos do not display uniformly across all major email clients. The common experience is that Gmail shows the logo readily, while Yahoo Mail and AOL Mail prove more challenging. This discrepancy frequently leads to questions about specific technical requirements or reputation hurdles that might be overlooked.
Key opinions
Inconsistent display: Many marketers report their BIMI logos appearing reliably in Gmail but not in other clients like Yahoo or AOL, even when DMARC, SPF, and DKIM are fully validated.
Initial setup hurdles: Marketers new to BIMI often struggle with the initial setup, especially understanding the nuanced requirements for different mailbox providers and the impact of sender reputation.
Confusion over VMC: There is a common misunderstanding about whether a VMC is universally required for BIMI logo display across all providers. While Gmail generally requires it, Yahoo and AOL have historically been more flexible.
Key considerations
Beyond validation: Even with SPF, DKIM, and DMARC in place, other factors like sender volume and reputation can affect BIMI logo visibility.
Engage with support: If all technical checks pass, but the logo is still not appearing in Yahoo or AOL, it may be beneficial to contact their sender support directly. They might be able to provide specific insights or troubleshooting steps for Yahoo Mail.
Monitor industry changes: Mailbox providers frequently update their policies and algorithms. Staying informed about the latest BIMI requirements from sources like Inbox Collective can help you adapt.
Marketer view
Marketer from Email Geeks notes that even with SPF, DMARC, and DKIM validated by BIMI, the logo might only appear in Gmail and not in Yahoo or AOL. This is a common starting point for many experiencing BIMI display issues.
13 Jul 2022 - Email Geeks
Marketer view
Marketer from Email Geeks confirms their limited understanding of volume, reputation, and deliverability. They were primarily seeking resources to understand why their BIMI logo wasn't working for certain clients, highlighting a common knowledge gap among new email marketers.
13 Jul 2022 - Email Geeks
What the experts say
Email deliverability experts emphasize that BIMI is not a 'set it and forget it' protocol due to the varying enforcement policies of different mailbox providers. While the core technical setup of BIMI, SPF, DKIM, and DMARC is crucial, factors like sender reputation, sending volume, and specific SVG formatting rules also heavily influence whether a logo will be displayed, especially in services like Yahoo and AOL that may have more stringent or nuanced requirements than Gmail.
Key opinions
Varying provider rules: Experts highlight that each mailbox provider has distinct rules concerning reputation, volume, and proprietary algorithms that determine BIMI logo display.
VMC's role in Gmail: The absence of a Verified Mark Certificate (VMC) is a common reason why a BIMI logo might display in Gmail (which often shows self-asserted logos initially) but not elsewhere, or why its display is inconsistent.
SVG file quality: Incorrectly formatted or non-compliant SVG files are a significant obstacle to BIMI logo display across all clients.
Sender volume and reputation: For smaller senders, or those with less established reputations, Yahoo and AOL might not automatically display the BIMI logo, requiring manual intervention or consistent good sending practices.
Key considerations
Adhere to SVG standards: Ensure your BIMI SVG file strictly follows the BIMI Group's specifications, avoiding bitmaps or unsupported elements. Professional graphic design assistance may be necessary.
Strengthen sender reputation: Focus on maintaining a high sender reputation with consistent, legitimate sending volume to build trust with providers like Yahoo and AOL. This can indirectly aid BIMI display. Review our guide on improving domain reputation.
Consult provider guidelines: Regularly check the specific BIMI requirements published by individual mailbox providers, such as Yahoo's sender guidelines, as these can provide crucial insights for troubleshooting.
Expert view
Expert from Email Geeks suggests that each mailbox provider has their own specific rules concerning sender reputation, volume, and other 'secret sauce' factors when deciding whether to display a BIMI logo. This explains the observed inconsistencies.
13 Jul 2022 - Email Geeks
Expert view
Expert from Spam Resource highlights that if you don't have a Verified Mark Certificate (VMC), the behavior at Gmail might be different, sometimes showing a self-asserted logo but not in other mailboxes. This points to VMC as a key differentiator.
14 Apr 2022 - Spam Resource
What the documentation says
Official documentation from organizations like the BIMI Group and mailbox providers clearly outlines the technical specifications and conditions for BIMI logo display. These resources are critical for understanding the precise requirements for SVG files, DMARC policies, and the role of Verified Mark Certificates (VMCs) in achieving consistent brand logo visibility across various email clients, including Yahoo and AOL.
Key findings
Core requirements: BIMI implementation fundamentally relies on a properly configured DMARC policy (at p=quarantine or p=reject) with SPF and DKIM authentication.
SVG specifications: The SVG image must meet strict technical criteria, including specific SVG Tiny P/S format, and must not contain embedded bitmaps. Using official conversion tools is recommended.
VMC differentiation: While some providers (like Yahoo and AOL) may support self-asserted BIMI, Gmail generally requires a Verified Mark Certificate (VMC) for the logo to appear reliably, particularly after initial display.
Cache and updates: Mailbox providers may cache BIMI images, meaning updates to your logo or record might not reflect immediately.
Key considerations
Follow official guides: Always refer to the official BIMI Group implementation guide for comprehensive setup instructions and best practices. This guide is the most authoritative source.
Use validation tools: Utilize BIMI validation tools to ensure your DNS records and SVG file conform to the required standards, helping to catch errors before deployment.
Understand provider policies: Familiarize yourself with the specific BIMI support details from providers like AOL Mail to understand any additional conditions for display.
Technical article
Documentation from the BIMI Group highlights that some mailbox providers (e.g., Yahoo!, AOL, and Netscape) accept self-asserted BIMI records, meaning they may display the logo without a Verified Mark Certificate. However, this may change to require VMCs over time.
21 Jul 2021 - BIMI Group
Technical article
Documentation from Yahoo Inc. Senders states that their requirements and support options for BIMI are available on their dedicated sender page, implying that specific guidelines exist for Yahoo/AOL.