
Description: Vivaldi Webmail is a free, open-source webmail client developed by Vivaldi Technologies. It offers an intuitive interface, support for multiple accounts, calendar and contacts syncing, and custom themes.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Greatmail is an email client and organizer designed to help users manage their inbox more efficiently. It has features like automatic sorting, scheduling, reminders, templates, and built-in note taking.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API