Self-hosted
SOGo: A Free open-source enterprise-grade Webmail and Groupware Server for teams
SOGo is an open-source groupware and IMAP/ SMTP webmail client for teams and enterprise. The interface design follows Material design system which gives it a pro look and makes it more comfortable and productive for every-day use. It is responsive, reactive and real-time interface with full drag-and-drop, full-screen view, no-distraction