On Tue, 2011-01-04 at 09:07 -0500, Ross Walker wrote: > On Jan 4, 2011, at 8:52 AM, Adam Tauno Williams <awilliam at whitemice.org> wrote: > > There are numerous IMAP servers that support maildir, and scripts to > > import MBOX files - that is how I would approach it. [But then I > > wouldn't use Maildir; I mean, really, who cares what format your > > messages are in - use IMAP and network access your message store. Cyrus > > IMAPd will index and filter all your messages for you]. > I think the OP said he wanted maildir for backup reasons. With mbox a single new email > will mean the whole mbox needs to be backed up, with maildir only that email will need > backing up. +1 The internal format used by Cyrus is one-file-per-message so rsync-ing works very well. But delayed-expunge and clustering works even better.