Mail-in-a-box is an open-source application that provides a simple, secure, and comprehensive way of setting up your own private email server. It is designed to be a one-stop shop for setting up a full email server stack on your own server. It automates the setup of several components, including a Postfix mail server, Dovecot IMAP server, SpamAssassin spam filter, ClamAV virus scanner, and OpenDKIM domain key signing service. It also provides an easy-to-use web-based interface for managing user accounts, email aliases, and domain names. Mail-in-a-box is designed to be easy to install and maintain, allowing users to quickly and securely set up their own custom email server.
Roundcube is a webmail application, mail in a box is a complete mail server which includes roundcube