
Description: MailSteward is an open-source email server software designed for enterprises and organizations. It offers robust security features like sender validation, spam filtering, and virus scanning.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Stellar Mail Backup is an email backup software that allows you to easily back up emails from various clients like Outlook, Thunderbird, and more. It can backup emails to local drives or cloud storage.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API