Can anyone suggest a good format to export this mail into, that will retain the messages, folders, and folder structure. They're going to try an import it into Outlook at the other end, so something that Outlook can read would be good.
I don't know about outlook specifically, but basically every mail program on earth understands MBOX format.
I'd rather not have to spend half the afternoon in a mail client, moving one folder at a time, so ideas for an export tool would be much appreciated.
mailutil from uw-imap would be an excellent choice. While it could use some documentation, it works a treat for many tasks involving mass mail maniuplation. I've been using it to migrate users from our awful MDaemon 3 (WinNT) server to the Cyrus server, but it can also copy from IMAP servers to local mbox files.
something like this might work:
mailutil transfer {$HOST/user=$USER/notls/norsh}INBOX $TARGETDIRECTORY
but I haven't done this specific task with mailutil so YYMV.
Craig Ringer
