Read the telemetry documentation and learn how to opt-out of this data collection here. When Thunderbird sends technical data to us, your IP address is temporarily collected as part of our server logs. Technical data: Thunderbird also receives basic information about your device and application version, including, hardware configuration, device operating system, and language preference. Interaction data: Thunderbird receives data about your interactions with the application, such as whether calendars and filters are being used, and how many email accounts a user has.

There are two types of telemetry data: interaction data and technical data. Thunderbird collects telemetry data by default to help improve the performance and stability of Thunderbird. Thunderbird Collects Data To: Improve Performance and Stability For Our Users We also adhere to the Mozilla Privacy Policy for how we receive, and handle, and share information. This Privacy Notice explains what data Thunderbird collects and shares, and why. The Thunderbird application allows users to privately integrate and manage their online communications.

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