EngageBay Tracker helps to receive notifications instantly when a recipient opens your email or attachment or clicks a link. EngageBay is FREE FOREVER. TRACKING Software FOR GMAIL: HELPS YOU GAIN INSIGHTS ON WHAT HAPPENS AFTER YOU CLICK SEND - See which emails have been read, how long ago and how many times, right from your Gmail - EngageBay extension adds the double-check mark to your Gmail so you can easily see which email has been read: (Gray ✓✓) means that refers sent, but not opened. (Green ✓✓) mean that refers opened and read. NOTIFICATIONS: - Receive notifications instantly when a recipient opens your email or attachment or clicks on your links. - See when your email was opened, link clicked, attachment downloaded etc., If you have any problems or suggestions please visit https://www.engagebay.com/support for useful resources.