I just learned of this:
https://www.ghacks.net/2020/04/09/mozilla-installs-scheduled-telemetry-task-on- windows-with-firefox-75/
https://tinyurl.com/u2by9kl
"According to Mozilla, the task has been created to help the organization "understand changes in default browser settings". At its core, it is a Telemetry task that collects information and sends the data to Mozilla.
The data is sent to Mozilla every 24 hours using the scheduled task."
--- Thunderbird 2.0.0.24 (Windows/20100228)
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