
Description: Mozilla Thunderbird is a free and open-source email client and personal information manager developed by the Mozilla Foundation. Known for its flexibility, Thunderbird provides email, chat, and news client functionalities. It supports a variety of email protocols, offers customization through add-ons, and focuses on user privacy.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

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: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API