i've just found a great tool with into this blog : isync
http://blogs.terrorware.com/geoff/2006/02/...ail-with-isync/this enables one to get all emails from an imap server, then you can read them offline on the zaurus.
1- apt-get install isync
2- cd
3- mkdir mail
4- cp /usr/share/doc/isync/examples/isyncrc.sample .isyncrc
5- nano .isyncrc
to customize default imap server, username and password (so you don't need to enter them after)
6- isync -1 -L -M ~/mail -a -s imap.myisp.com
et voila!
now you can read your local email on zaurus with mutt for example
mutt -f ~/mail/INBOX