Looking for an open-source alternative to iRedMail? Below are 5 community-built tools that offer similar functionality — all free, open source, and ready to use or self-host. Ranked by GitHub stars.
Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.
mailcow-dockerized is a modern, user-friendly, open source mail server suite based on Docker, offering a complete mail solution with advanced security, convenient web interfaces, and easy deployment.
BillionMail provides an open-source MailServer solution with NewsLetter and Email Marketing capabilities—fully self-hosted, developer-friendly, and free from monthly fees.
Mailu is a full-featured, self-hosted email server solution that runs as Docker images, providing an insular email distribution with modern features and security controls.
Modoboa is an open-source platform that simplifies mail hosting by providing a modern and user-friendly web interface for managing email domains, mailboxes, and aliases. It features integrated administration, security enhancements, and extensibility for hassle-free email server management.
The top picks from this list are Mailinabox, Mailcow-dockerized, BillionMail — all maintained, free to use, and self-hostable.
Yes. Every tool listed here is open source and free to use. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Most of the alternatives listed are self-hostable. Check each tool's page for hosting details, system requirements, and licensing terms.
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