Wren – Flight Carbon Tracker

Detect flight confirmation emails and log them for carbon offsetting with Wren.

Make it easier to track the climate impact of your flights. Wren’s Flight Carbon Tracker finds flight details in confirmation emails, lets you review and edit them, and logs approved flights to your Wren account. Once logged, you can view estimated emissions, offset one or several flights through Wren, and share your impact. Features: - Detect itineraries in flight confirmation emails you open in Gmail, Outlook, and Proton Mail - Optionally scan an Outlook inbox for flight confirmations - Review and edit airports, dates, airline, flight number, cabin class, and ticket count before logging - Manage pending flights and sort or filter flight history by date and offset status - Continue to Wren to offset individual or multiple flights - Share the impact of offset flights Privacy: Flight detection runs locally in your browser using deterministic rules. No AI model or LLM reads or processes your email, and Wren never receives raw email bodies. Extracted flight details are sent to Wren only when you choose to log a flight. If you deliberately report an incorrect detection, Wren receives the email subject and detected flight details, but not the email body or attachments. Flight detection is opt-in and can be disabled at any time. A Wren account is required.