Gnome.. Learns junk control. Modular extensions.
Personalized email addresses ($$). Web search. Learns junk control. Add-ons. Chat RSS feeds.
KDE. Too many "Improvements"? Akonadi??.
Gnome. More basic. Filters but doesn't learn.
No HTML formatting. Bogofilter (spam-learns). Plug-ins. Wiki spammed! Lightweight.
Lightweight fork of Sylpheed. Plug-ins. Bogofilter (learns). Html viewed in Dillo. Plug-ins.
- Maildir: Thunderbird Evolution KMail Balsa Sylpheed
- MBox: Thunderbird Evolution KMail Balsa Claws
- MH: Balsa Sylpheed Claws
- (Balsa or Claws can do any of the three formats)