"Andy Zbikowski (Zibby)" <zibby+tclug at ringworld.org>  wrote:
> For mail: If Sylpheed uses mbox format mail boxes...

Wrong.  Sylpheed is a GUI for MH style mailboxes.  Look under
File->Export... to export to an mbox format.  If you would like to use
commandline tools to create mbox style folders, install the nmh toolkit.
Use the 'packf' command and specify the outgoing file:

	packf +inbox -file ~/<destination>

A side note, MH style mailboxes can be accessed via IMAP if you use the
UW IMAPD server.  The namespace you're looking for is #mhinbox, and
stuff like #mh/Mailbox/mysubfolder.  Netscape does a good job, as does
Mutt, to seeing these namespaces automatically.

Have fun!
-- 
Chad Walstrom <chewie at wookimus.net>                 | a.k.a. ^chewie
http://www.wookimus.net/                            | s.k.a. gunnarr