Notification when file in special subfolder

Is it possible to get a notification when a file is added in a special subfolder? Example: The treasurer of our association would like to receive an email when a new invoice is loaded into the folder “Invoices”, so that he can immediately see that he has to transfer this invoice. He does not want to receive an email when other files like pictures are loaded into other folders in the cloud. Can I limit the notification to a subfolder?

Install e.g. the “Flow Notifications” or the “Workflow External Script” app to send notifications or execute a script command to notify the user.

ok, thanks. At the moment i try it with "favorites"folder and then “send mail if new file in favorite folder”.