
Description: Tuta is an open source, privacy-focused email service that emphasizes security and anonymity. It offers end-to-end encryption, anonymous sign up without a phone number, and servers located in privacy-friendly jurisdictions.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: OnionMail is an email service that provides end-to-end encryption and anonymity by routing emails through the Tor network. It allows users to register an email address ending in .onion that can only be accessed over Tor.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API