Overall, Pegasus Mail, Eudora, and similar newer mail clients currently get the nod as each excels over BeyondMail in terms of features and interface layout, but BeyondMail is clearly a contender. Assuming development continues and new releases once again become available for download, BeyondMail will very likely continue to improve its position as it evolves and adds additional new features.
Pros: Feature-rich client with WebMinder agents, hypertext support, and spell checker
Cons: Lacks features like advanced filtering, distribution lists, and automatic decoding; severely dated interface and feature-set; discontinued — no longer supported or developed