DirectAdmin Support said:Actually, Maildir would solve quite a few issues:
1) the points you've stated
2) IMAP is already done
If we were starting out brand new, this wouldn't be too hard, but when you already have many servers running the mbox format, it's tricky to switch them *all* over..... Thoughts?
John
Ensim uses mbox and has imap maybe look into the imap server they're using? Personally I like mbox better but I know there's several reasons for preferring maildir I just like the simplicity of backing up a mbox based mailbox...