Five complete solutions for email server deploy

For inexperienced or impatient admins!

Five complete solutions for rapidly deploy a complete mail server with a single installation. Enjoy!

• Citadel: Versatile and powerful mail server, written in C.
  License: GPLv3
• iRedMail: Mail server solution based on Postfix and Dovecot.
  License: GPLv3
• Mailcow: Mail server suite based on Dovecot, Postfix and other open source software. Provides a PHP Web UI for administration. 
  License: GPLv2
• Mail-in-a-Box: Shell script that turns Ubuntu into a fully functional mail server.
  License: CC0
• Modoboa: Mail hosting and management platform with web interface, written in Python.
  License: MIT