The document describes how SmartFile Attach works. It explains that users can log in to HubExchange and search for SmartFile. They can then install SmartFile Attach and upload files, modify file details, and add files to emails. The files will be accessible in the user's "My Contents." SmartFile Attach aims to solve the problems of users spending time managing files across multiple places and providing multiple user accessibility. It offers unlimited files, storage and transfer for a monthly fee.