iRedMail Alternatives

Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more.

Web-based IMAP email client

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

Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.

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.

Secure email with absolutely no compromises. Get your free encrypted email account today.

freemium €5.0 / Monthly (user - 5 GB)

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.

Horde Groupware is a free, enterprise ready, browser based collaboration suite.

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

Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

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

The Power Email App for busy professionals, like you.

An open source mailserver suite.