It's a nice idea, and there are some good features here. But my initial experience with Propovoice is that it's a bit buggy, not all that customisable (for example I cannot change menu labels or re-order/remove/rename them for the cient portal) and it's not really all that white labelled. I mean sure it sits on your domain and you can put in your logo. But no favicon for example, no customisable login/logout redirects and such. I will continue to experiment with this, but I may consider submitting a refund for this one.