Mailcow offers an intuitive and modern web interface for creating and managing email accounts. A Mailcow server is a set of Docker containers that execute several mail server programs, such as SOGo, Postfix, and Dovecot.

Mailcow is a self-hosted open-source email solution for hosting mailboxes at your custom domain with enhanced privacy compared to G Suite or Office 365. For larger businesses, particularly those with 50 mailboxes or more, running your email server can be significantly less expensive than a hosted email service that costs 5 to 20 USD per user/ month/inbox.