Stalwart IMAP Server

Stalwart IMAP is an open-source Internet Message Access Protocol server designed to be secure, fast, robust and scalable. A JSON Meta Application Protocol (JMAP) backend such as Stalwart JMAP is required to use Stalwart IMAP (in other words, Stalwart IMAP is an imap4-to-jmap proxy).

Key features:

Get Started

Install Stalwart IMAP on your server by following the instructions for your platform:

You may also compile Stalwart IMAP from the source.


If you are having problems running Stalwart IMAP, you found a bug or just have a question, do not hesitate to reach us on Github Discussions or Discord. Additionally you may become a sponsor to obtain priority support from Stalwart Labs Ltd.


Table of Contents