Mark, thanks, but when I checked my invoice for Updox it only says unlimited electronic fax fee, nothing mentioned about "Premium" or AC Portal, and I do not recall if this was ever described as "Premium". So, I do not know if your answer applies to me. I have used Updox with AC for years to file and send faxes and other information to and from patient charts, so apparently I have the portal. The question is, if we have been using Updox with Amazing Charts for all this time, has something changed in the billing arrangement? I think this is the first time I have seen a charge for an Updox Portal on AC site, so this implies a change. Using Updox as the fax server for the office, integrated with Amazing Charts is now necessary for information management, and any interruption must be avoided. Surprise $400 charges are also best avoided....