Fire-Track 作成者: Baban

Firefox Mail Tracker adds an invisible 1×1 pixel image to your outgoing Gmail messages. When the recipient opens the email, the pixel loads from your server, confirming it was read. The extension includes a lightweight backend and works without user interaction. Great for freelancers, professionals, or anyone who wants basic email read tracking within Gmail. Privacy note: no personal data is stored beyond timestamps and email IDs.