
Description: hMail Server is an open-source email server for Microsoft Windows. It allows you to send and receive email using POP3, SMTP and IMAP protocols. Designed specifically for Windows platforms, hMail Server is easy to install and manage.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Microsoft Exchange Server is an email and calendar server software developed by Microsoft. It allows enterprises to host business email, contacts, calendar, and tasks.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API