Here's an idea: Why don't you ONLY SPOT CHECK EVERNOTE EMPLOYEE'S ACCOUNTS? There are plenty of employees and they all must use Evernote. Limit all spot checking EXCLUSIVELY to employee accounts and stay out of CUSTOMER ACCOUNTS. If you spot check the 300 +/- employee note books and find big problems or no problems, that's a good enough sample size to make a go/no go decision. If it's not, your AI might need a little more "I".