Whether it be the important files that require download tracking, or you want to know when someone uploads files to you — setting up a notification is a few mouse clicks away. You'll get an email when targeted file(s) are either uploaded or downloaded.
Maybe you just need to keep an eye on a few people. Notifications can be set to trigger for specific users only. You can also edit notifications as time goes on and your needs change.
It doesn't matter whether people access files via FTP, SFTP, FTP-SSL, or with sharespaces and sent files in the web-based file manager. Notifications get sent as soon as the event happens.