
Description: Gmail Peeper is a Gmail add-on that allows users to see who opened their emails and what actions they took. It tracks opens, clicks, replies, and more to give visibility into how recipients engage with emails.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: POP Peeper is an email client that allows you to connect multiple email accounts into one easy-to-use interface. It supports POP3 and IMAP protocols along with common email providers like Gmail, Outlook, Yahoo Mail, and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API