
Description: Mailtrain is an open source newsletter application that allows you to easily create, send, and manage email newsletters. It has a simple and intuitive interface that makes it easy for anyone to get started with email marketing campaigns.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Mailmust is an open-source email tracking application that allows you to see when recipients open your emails and click on links. It is designed for privacy and can be self-hosted.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API