
Description: DummySMTP is an open source SMTP server that allows you to test email sending and receiving without sending actual emails over the internet. It is lightweight, runs locally, and useful for testing email functionality in applications during development.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Ethereal Email is an open-source, self-hosted email server that allows you to have full control over your email, providing an ethical, private, and secure email alternative.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API