A service provider written in Rust using Rocket that generates autoconfig and autodiscover XML files for Microsoft Outlook, Microsoft Exchange and Thunderbird to automatically configure e-mail.
An example configuration file (config.toml.example) can be found in this repository.
More information about how to configure automail can be found in Rocket's documentation.
In addition, there is also a guide that discusses installing, configuring and running automail on Alpine Linux.