A Mailbox format for unix where the mailbox is a directory and every file in the directory is one email message. Gets around a lot of the serious limitations on the old mbox mailbox format. It's largest drawback is that everyone has their own "index" files that they generate for maildir and there is no agreed upon standard (even within version changes of a single program). In general far superior to mbox mailboxes.
MailDir varients aer used by Cyrus and courier imap daemons.
7 pages link to MailDir:
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