All DLP products are like this. They impose basic limitations that can easily be bypassed by anyone remotely technically inclined.
I've come to the conclusion that these products are just to cover the low-hanging fruit situations of someone accidentally doing something that they shouldn't have. In other words, it's a UI integrated "DO NOT FORWARD" message from an e-mail.
I think this is correct. This is to help management say that if if there is a policy and it’s violated that it can’t have been accidental because extra conscious steps have to be taken which violate policy. Making it easier to make people adhere to policy (and discipline as well).
I've come to the conclusion that these products are just to cover the low-hanging fruit situations of someone accidentally doing something that they shouldn't have. In other words, it's a UI integrated "DO NOT FORWARD" message from an e-mail.