Set a default notification setting for a folder (i.e. Every collaborator gets a notification email when a new file is uploaded), until the individual wants to change that and override it. This would be helpful in the case where we want to utilize Box to share files with external clients and avoid sending a separate email to them to let them know that we've uploaded a new file. It would be a hassle (and maybe not likely to happen) to rely on external clients to change their own personal notification settings.