Zimbra
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. subtitle
Zimbra Alternatives
The best Zimbra alternatives based on verified products, community votes, reviews and other factors.
Latest update:
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/iredmail-alternatives
A fully fledged, free email server solution, an open source project (GPL v2).
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/roundcube-alternatives
Web-based IMAP email client
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The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.
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/mailcow-alternatives
An open source mailserver suite.
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/thunderbird-alternatives
Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
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/microsoft-exchange-server-alternatives
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.
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/postfix-alternatives
Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.
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/microsoft-outlook-alternatives
Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
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/mail-in-a-box-alternatives
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.
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/google-workspace-alternatives
Google's encompassing suite of cloud-based business apps.
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/microsoft-365-alternatives
Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
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/mailbird-alternatives
Mailbird is the best email client for Windows 7, 8 and 10
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/horde-alternatives
Horde Groupware is a free, enterprise ready, browser based collaboration suite.
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/hmail-server-alternatives
hMailServer is a free e-mail server for Microsoft Windows.