
Description: Mailu is an open-source mail server that focuses on security and ease of deployment. It is designed to run in containers like Docker and handles email delivery, filtering, webmail access, contacts/calendar features, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: mailcow: dockerized is an open source email server that runs on Docker. It bundles common email components like Postfix, Dovecot, SOGo, Rainloop, PostfixAdmin, and more into easy-to-use containers.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API