what is transmitted if telemetry is not disabled

Hello,
I will ask our documentation team to add a topic about it on our online help. First thing you have to know is that we take privacy very seriously (https://devolutions.net/legal) but you right that we should define what is our telemetry It's the equivalent of Google Analytics. Everything is anonymous. It's equivalent to browsing our web site. We the information are able to know how many users are using RDM versus RDM Free. Our privacy department make sure that we are unable to identify the source of the log

You can disable this if you want with the No Internet Connection setting in File->Options | Advanced and it's also possible apply a policy for that.

Regards