
Description: Mailpile is an open source email client with built-in encryption and privacy features. It allows users to search and organize email easily while keeping data secure.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: InstAddr is an open-source alternative to MailChimp for email marketing campaigns. It provides easy tools for building email lists, designing campaign templates, and tracking engagement.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API