
Description: OpenMailBox is an open source email service that emphasizes privacy and security. It offers end-to-end encryption, anonymous registration, and doesn't collect personal data. As it's self-hosted, you have full control over your data.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Outlook.com is a free personal email service from Microsoft that offers a simple, ad-supported inbox experience with 15GB of storage. It provides access to Outlook on the web and integrates with Microsoft apps like Word, Excel, and Calendar.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API