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mailinabox
15.1k
Creative Commons Zero v1.0 Universal
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.
Updated: 2025-07-28
Privacy First
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postal
16.1k
MIT License
📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail
Updated: 2025-12-05
roundcubemail
6.7k
MIT
The Roundcube Webmail suite
Updated: 2025-12-04