
Description: Mailtrap is an email testing and fake SMTP service for developers. It allows sending and receiving email messages without actually delivering them, useful for testing email functionality in applications under development.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Mailpit is an open-source email client focused on privacy and security. It allows users to easily encrypt emails and features built-in tracking protection.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API