
Description: Mailosaur is an email testing and automation platform for developers. It allows you to easily catch, view, and test emails from your web app by providing an email address to your app. Mailosaur makes it easy to test email sending, monitor email contents, extract data from emails, and automate email workflows for testing.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: MailCatcher is a simple, open source email testing tool for developers. It runs a local SMTP server to catch emails sent from web apps during development, allowing developers to preview them in a web interface instead of sending them externally.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API