
Description: Mailman is an open source mailing list management system. It helps manage email discussion and announcement lists, allowing users to subscribe and unsubscribe, and helping admins moderate and post to the lists.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: WP Mailster is a WordPress plugin that allows you to create, send, and manage email newsletters directly from your WordPress site. It has a drag-and-drop editor to build emails, subscription forms to capture new subscribers, and analytics to track open and click rates.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API