
Description: ProtonMail Bridge is an email client that connects your ProtonMail encrypted email account to your desktop email client like Outlook or Thunderbird. It allows you to use ProtonMail seamlessly with your preferred email program while maintaining encryption.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Mailvelope is an open source browser extension for end-to-end email encryption. It integrates with webmail providers like Gmail and Outlook to allow users to easily send and receive encrypted emails using OpenPGP.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API