Premission - Users and Folders


I want to set up something like this and I have no idea how. Could someone provide help?
(1) How can an user setup an email notification when a guest uploaded files?
(2) Is there any way to know who uploaded the files for an user? Eg, Guest Peter uploaded abc.txt to User A. How can User A to know who uploaded the abc.txt?


When a guest uploads a file (shared via link) you can see it in your activities. In your settings you can enable an email notification for certain activities.

I don’t know how. Just tested it. When I share a folder via mail (insert mail address in share dialog) I only see someone uploaded a file but not who.
But if they download files you can see who did it.