
Description: 33Mail is a free, ad-supported email service that emphasizes privacy and security. It offers encrypted email transmission, spam filtering, email aliases to mask your real email address, and 2GB of email storage.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Guerrilla Mail is a disposable email service that allows users to create temporary email addresses. It helps protect personal email inboxes from spam.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API