
Description: mmmmail! is an open-source, free email client for Windows designed to be simple and lightweight while still offering robust features. It supports POP3 and IMAP accounts, HTML email rendering, attachments, address books, spell checking, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: MailNesia is an open-source, self-hosted webmail client focused on privacy and security. It allows users to access their email from any device with a browser using end-to-end encryption and two-factor authentication.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API