
Description: Mailgun is an email service built for developers. It provides a powerful API that allows sending, receiving, and tracking emails easily from within an application. Key features are flexible APIs, scalable infrastructure, and deliverability optimization.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: 1and1Mail is a free email service provided by 1&1 that offers users an @1and1.com email address with 15GB of storage space. It has a clean, ad-free interface and useful features like IMAP/POP support, spam filtering, email aliases, and automatic sorting.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API