
Description: SparkPost is an email delivery service that focuses on delivering high volumes of email easily and reliably. It provides email infrastructure and services to help companies optimize their email programs.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: JangoSMTP is an easy-to-use SMTP server for Windows that allows you to send email directly from your computer without configuring an email client. It supports SSL/TLS encryption and customization of port numbers, logging, and security.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API