We really like the fact that we get a quarantine report because we can identify for ourselves which emails we want to keep and which we want to get rid of. It also gives us the option of directly allowing emails, which we really like. That way, the next time we get such emails, they're not blocked.
We see the things it's catching and the things it's catching are the things you'd want it to. Overall, it is doing exactly what it says on the box.