Zimbra Collaboration is a leading open-source email and collaboration platform.
Pros
- Robust email and collaboration features
- User-friendly interface
Cons
- Paid plans can be expensive for larger organizations
Free and paid plans available
Best iRedMail Alternatives ranked by AI · updated May 2025
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iRedMail is a full-featured mail server solution that supports email services like SMTP, IMAP, POP3, and webmail.
Price: Free and Paid versions available
🎯 iredmail.org
Top 6 iRedMail alternatives
Mail-in-a-Box provides a full stack mail server solution with webmail and contacts. It enables easy mail hosting and management.
Poste.io is a complete mail server solution with a modern web interface, spam filter, calendar, and contacts.
Starting at $19/month
Zimbra is an enterprise-class email, calendar, and collaboration solution built for the cloud, both public and private.
Starting at $6 per mailbox per year
mailcow is a modern mail server suite based on Dovecot, Postfix, SOGo, and other open-source software. It provides a complete email solution...
Modoboa is a mail hosting and management platform including a modern and simplified web interface for user and domain administration.
Free and open-source
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