According to this article, they intended to analyze the notes taken by their users and also have their "employees read your notes so" they "can ensure that the machine learning is functioning properly" and that to "help you get the most out of your Evernote experience."
I believe that they simply wanted to enable the targeted ads or sell the newly generated data, and that they still want to do this. But maybe somebody here has more insight.
https://techcrunch.com/2016/12/14/evernotes-new-privacy-poli...
I believe that they simply wanted to enable the targeted ads or sell the newly generated data, and that they still want to do this. But maybe somebody here has more insight.