iRedMail Alternatives

mailcow: dockerized

mailcow is a mail server suite based on Dovecot, Postfix, SOGo, Rspamd and other open source software, that provides a modern Web UI for administration.

Features:

• Email Server
• ActiveSync
• Modular System
• Self hosted mail
• Support for Docker
• Email Server

Zimbra Collaboration Suite

Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra...

Features:

• Active Directory integration
• ActiveSync
• Email Server
• Real time collaboration
• Team Collaboration

hMail Server

hMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the...

Features:

• Convert images to PDF
• Support for IMAP
• Email Server
• POP3 Support
• SMTP
• SMTP integration

Horde

Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards...

Mail-in-a-box

Take back control of your email with this easy-to-deploy mail server in a box. Mail-in-a-Box turns a fresh cloud computer into a working mail server. You get contact...

Features:

• Email Server
• Support for IMAP
• Nextcloud integration
• Security & Privacy

nPOPuk

nPOPuk is an ultra-small, but comprehensive, e-mail client that runs on a wide range of Windows-based operating systems

Features:

• POP3 Support
• Portable

Mulberry

Mulberry is a powerful, easy to use electronic mail (email) and calendar program that allows you to send, access, and manage email and calendars. Mulberry also helps you...

Features:

• CalDAV
• POP3 Support
• Calendar Sync