
Description: Email on Acid is an email testing and analytics platform that helps ensure emails render correctly across different email clients and devices. It provides comprehensive email testing, debugging, monitoring and analysis.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Campaign Monitor is an email marketing platform that allows users to create, send, and track email campaigns. It offers drag-and-drop email builders, A/B testing, automation workflows, and integrations with CRMs and e-commerce platforms.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API