
Description: Microsoft Outlook Express is a discontinued email and news client that was included with Internet Explorer versions 6 through 10. It offered basic email features like POP3 and SMTP support, contact management, calendar, and newsgroup access.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Mailbird is an email client for Windows that focuses on customization, speed, and privacy. It has a clean, ad-free interface, powerful organization tools, and robust encryption options.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API