I have been trying to find out if Updox is going to be fully integrated into Amazing Charts so that it can be considered for MU portal solution, or if AC will partner with something else. Currently the portal, as a module, must be certified and on the list at the ONC CHPL website in order to be able to count it as a "portal" for Meaningful Use. You can use it for file exchange, messaging and AVS, but not counted as portal unless it is part of the Complete EHR or certified as a Module. ONC website
http://oncchpl.force.com/ehrcertIf not, my clients need to use something else. Any suggestions?