MDaemon Messaging Server Alternatives

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freemium €5.0 / Monthly (user - 5 GB)

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

An open source mailserver suite.

Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.

Mailbird is the best email client for Windows 7, 8 and 10

hMailServer is a free e-mail server for Microsoft Windows.

Mailu is a simple yet full-featured mail server as a set of Docker images.

Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

KerioConnect is a commercial mail and groupware server.

Eudora Internet Mail Server is a highly advanced internet mail system that supports the all kind of email systems and clients either it is IMAP, POP3, SMTP and much more.

The Power Email App for busy professionals, like you.

A fully fledged, free email server solution, an open source project (GPL v2).

Axigen is an integrated email, calendaring & collaboration platform, built on a Linux mail server technology.