Experts, marketers, and documentation sources converge on the conclusion that SNDS colors are an unreliable and oversimplified representation of email delivery performance. While providing a basic overview of Microsoft's perspective on a sender's reputation, SNDS colors are influenced by numerous factors, lack granular detail, and do not consistently reflect actual inbox placement. Relying solely on SNDS colors is strongly discouraged. A comprehensive approach involves analyzing underlying data within SNDS (complaint rates, authentication failures), integrating data from third-party tools and internal metrics, actively managing feedback loops, ensuring proper sender authentication, and following email marketing best practices.