SOUND.RADAR Mail Tracker is a free Chrome extension designed to enhance Gmail by providing detailed tracking of sent emails. This tool allows users to monitor when and where their emails are opened and whether any links within them are clicked. It offers real-time notifications and analytics, ensuring a comprehensive understanding of email engagement. Key features include individual tracking for each recipient, desktop alerts for immediate feedback, and a right sidebar panel that displays real-time feed, recent sends, and open/click rates.

The extension operates seamlessly within Gmail, automatically attaching tracking capabilities without the need for separate sending tools. Features like automatic exclusion of internal views and self-views ensure that the data remains accurate. Users benefit from additional insights such as optimal sending times and performance analysis based on recipient domains and subject lines. Importantly, SOUND.RADAR prioritizes user privacy by not utilizing Gmail API or Google permissions, ensuring that data is not sold or shared with third parties.