RetrieveUserData is a plugin for the webmailer Squirrelmail. It retrieves a user's name and e-mail address from a configurable source like LDAP or MySQL. Your users don't need to configure Squirrelmail before writing their first mail.
A PHP-based web frontend to IMAP mail servers (developed on Cyrus imapd currently). The interface supports reading all kinds of MIME multipart mails, fully managing IMAP folder structures including ACLs and basic mail composition.