Meron
Fast, secure email client with chat and kanban views
...The software includes customizable tags, automated filtering rules, and rich-text message composition. It also supports RSS and Atom feeds for following online publications. Security features include encrypted local storage and credentials protected by the operating system's keyring. Optional Model Context Protocol integration allows AI clients to access permitted email functions. Available for Windows, macOS, Linux, Android, and iOS, Meron provides a flexible communication workspace.