In most circumstances I am all for attorney-client privilege. But if you are in jail or prison and provided a medium to communicate to the outside world and that medium requires you to accept a consent to monitoring agreement before each use, then you should have no expectation of privacy regardless of whom the communication is with. The prison system has proper ways to initiate secure attorney-client communication and these people failed to use it, that’s their problem. However, I do think the law needs to be updated to allow for secure email communication between the attorney and client, but until that occurs they need to live within the confines of the law.