OfflineIMAP is  a  tool  to   simplify   your   e-mail  reading.
It synchronizes remote IMAP folders and local Maildir folders. It is fast
flexible and safe. It is also useful if you want to use a mail reader that
does not have IMAP support, has poor IMAP support, or does not provide
disconnected operation.

Homepage:
http://offlineimap.org/
