The Courier mail transfer agent (MTA) is an integrated mail/groupware
 server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP,
 TLS, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list
 services within a single, consistent, framework.
 .
 This package provide the POP3 daemon for Courier. It only supports email
 stored in the Maildir format.
 .
 POP3 over TLS is handled by the regular POP3 daemon from in
 conjunction with the TLS wrapper.