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.




The best open source alternative to iRedMail is mailcow: dockerized. If that doesn't suit you, our users have ranked more than 50 alternatives to iRedMail and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to iRedMail are Mail-in-a-box, Nexmail, hMail Server and Scribe Mail.
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.





NexMail is an open-source, modern webmail client designed for self-hosted email servers. Enjoy a clean, intuitive interface with powerful features for managing your emails efficiently.




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 world.


Scribe is a small portable email client with an intergrated contact database and calendar. It supports all the major internet mail protocols and uses international standards where possible. Scribe doesn't required installing or uninstalled and can be used from a removable...






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


Carbonio Community Edition (Carbonio CE) is a free and open-source (FOSS) email and collaboration platform designed by Zextras. It is a complete email solution, allowing organizations to maintain digital sovereignty through on-premises self-hosted servers, ensuring privacy and...



Feng Office is a commercial Open Source web based solution aimed to enhance collaboration and productivity. It integrates information such as mails, documents, notes, favourites, events and task. This online office is aimed at small business, which use it for project management...
Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface. It provides useful components such as an administration panel or a webmail.
NOCC is a webmail client written in PHP. It provides webmail access to IMAP and POP3 accounts.

OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
KNode is a KDE-application to access Usenet newsgroups and mailing lists. KNode is your usenet mail reader.

iredmail is a server knode is a client.


iRedMail is a server, i.Scribe is a client.