
Description: SMTPeter is an open-source email server software designed for small businesses and developers. It allows you to send, receive, and manage emails on your own servers with features like spam filters, email aliases, user management, and analytics.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Elastic Email is an email delivery service that focuses on deliverability and inbox placement. It provides API and SMTP options for sending high-volume transactional and marketing emails, with features like detailed analytics, inbox monitoring, and dedicated IP addresses.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API