
Description: Mailrelay is an email delivery service designed to improve email deliverability. It helps avoid spam filters and blacklists by sending email through its own IP addresses with good reputations.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Kingmailer is an email marketing and automation platform designed for small businesses. It allows you to create, send, and track email campaigns, build automated email workflows, manage contacts and subscriber lists, and integrate with other popular services.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API