Install kopano-server by entering the following commands in the terminal:
sudo apt update sudo apt install kopano-server
Description:
Complete and feature rich groupware solution - server component
The Kopano Collaboration Platform (KCP) is a complete, stable and flexible groupware solution supporting open source as well as proprietary clients including mobile ones. It also features a web interface. . This package provides the core server component that connects to gateways (like the imap gateway) or the web gui connect to.
Homepage: https://download.kopano.io/community/
Version: 8.5.5-0ubuntu1
Section: universe/mail