courier-imap

IMAP (and POP3) server that provides access to Maildir mailboxes

Courier-IMAP is a server that provides IMAP access to Maildir mailboxes. This IMAP server does NOT handle traditional mailbox files (/var/spool/mail, and derivatives), it was written for the specific purpose of providing IMAP access to Maildirs. Courier-IMAP implements some extensions to the basic Maildir mail storage format in order to support some additional features, such as folders and "soft" quotas. This is done in a way that's backwards compatible with the standard Maildir users (although, of course, they will ignore the additional features). Other software that understands and uses the same Maildir extensions is SqWebMail, and maildrop. Features: * Extremely small footprint. * Abstract authentication modules. * Virtual mailbox support. * Pop3 daemon.