
Description: Mailspring is an open-source email client for personal use. It aims to provide an interface that is both intuitive and feature-rich for managing your email effectively.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Gmail Offline is a browser extension that allows you to use Gmail offline. It stores emails locally so you can read, write, and organize emails without an internet connection. Useful for situations with unreliable connections.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API