
Description: Courier IMAP is an open source IMAP email server for Linux, designed with a focus on stability, security, and speed. It aims to provide businesses and developers with a robust, scalable IMAP solution.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: DBMail is an open source email server software that allows you to send and receive emails using your own server and domains. It is lightweight, easy to configure, and supports standard email protocols like SMTP, POP3, and IMAP.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API