Wanderlust is a mail/news management system with IMAP4rev1 support for Emacs.
* Implementation in elisp only.
* Support of IMAP4rev1, NNTP, POP(POP3/APOP), MH and Maildir.
* Integrated access to messages based on Folder Specifications like Mew.
* Key bindings and mark processing like Mew.
* Management of threads and unread messages.
* Folder mode to select and edit subscribed folders.
* Message cache, Disconnected Operation.
* MH-like Fcc (Fcc: %Backup is possible).
* Full support of MIME (by SEMI).
* Draft editing of mail and news as a same interface.
* Icon based interface for the list of Folder (XEmacs and Emacs 21).
* Skip fetching of a large message part of MIME(IMAP4).
* Server side searching (IMAP4), internationalized searching is available.
* Virtual folder.
* Compressed folder.
* Automatic expiration of old messages.
* Automatic refiling.
* Draft templates.