@nielsk Um, yeah. Its total #spyware sh_t and the main beneficiary seems to be the Russian government.
“Although Microsoft explains that it is possible to switch back to the previous apps at any time, the data will already be stored by the company,” Heise reported. “This allows Microsoft to read the emails.”
You can’t use the new Outlook without syncing all this information with Microsoft Cloud
https://proton.me/blog/outlook-is-microsofts-new-data-collection-service