
Description: Mailster is a WordPress plugin that allows you to create, send, and manage email newsletters. It has a drag-and-drop editor to design email templates, subscription forms to capture contacts, and analytics to track engagement.
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