Description: Letter Opener is a Rails plugin that allows developers to preview mail in the default browser instead of sending it. It intercepts Action Mailer messages and displays them in the browser, showing the mail body, headers, attachments and more. Useful for testing applications without actually sending emails during development.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows
Description: Winmaildat.com is a free desktop email client for Windows that supports POP3 and IMAP email accounts. It has a simple, easy-to-use interface and basic email features.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API