I'm looking to have a relatively simple website designed with just a couple of pages for a counseling office. However, the key is that I'm looking for a customer to have the ability to purchase a membership on the website, which then gives them access to a messaging system with the counselor (and they would only see the messages between themselves and the counselor, so not like a message board that all members can see). I know that there are paid messaging apps for iPhone/Android that exist, I'm just not sure which one could be incorporated the most easily into this a customer has access to the messages either on their desktop or mobile messaging app. I wouldn't expect anyone to have to "design" the mobile app. I'm happy to pay for access to a third party app that fills this need, I just need help incorporating it into the website, and creating a "master dashboard" for the counselor, where he can see all of the messages that have come in from everyone.