Mailrise is an SMTP server that converts the emails it receives into Apprise⁠ notifications. The intended use case is as an email relay for a home lab or network. By accepting ordinary email, Mailrise enables Linux servers, Internet of Things devices, surveillance systems, and outdated software to gain access to the full suite of 60+ notification services supported by Apprise, from Matrix to Nextcloud to your desktop or mobile device. To learn more, please visit the project page⁠: https://github.com/YoRyan/mailrise

You must download and configure the config.yml file before installing the docker container:
https://github.com/YoRyan/mailrise