The responses indicate a mix of experiences regarding Yahoo FBL emails. While some initial reports from Email Geeks suggested possible issues, later confirming an internal issue acknowledged by Yahoo, a broader perspective emerges. Experts emphasize the importance of adhering to deliverability best practices, including authentication (SPF, DKIM, DMARC), maintaining low spam rates (below 0.3% as per Yahoo/AOL requirements), and ensuring easy unsubscription processes. Upcoming stricter requirements from Yahoo and Gmail in 2024 necessitate these practices. Problems with Yahoo FBL can be intermittent or related to Yahoo's internal systems. Deliverability issues from poor sending practices or authentication problems indirectly affect FBL data reliability. Documentation from Yahoo Help, RFC Editor, DMARC.org, and SparkPost reinforce the importance of following email deliverability best practices and understanding the underlying protocols. Experts recommend monitoring overall email health, cross-referencing FBL data with other metrics, and verifying FBL setup with Yahoo if issues persist. DMARC reports provide supplementary insights into authentication and spam complaints. It's essential to ensure compliance with evolving email requirements, maintain sender reputation, and proactively troubleshoot deliverability problems.