Client Use Statistics

We're pretty sure one of our older clients is not really using Uncat but is too nice to tell us that he doesn't want to learn a new software. For another client with multiple users, we think that one user is doing most of the updates and the other user is holding up the process because she isn't logging on at all (she was terrible at sending spreadsheets too, so it's her issue, not an Uncat use issue). It would be useful to be able to see which clients and which users had clicked the magic link and when they last clicked it.