with last version of outlook web app, unable to open EmailMessage or Folder using url

Hi,

using EWS (Exchange WebServices) from .net code, with previous version of Outlook Web App, we were able to open an EmailMessage or a Folder programmatically, by constructing the appropriate URL. For example:

string url = String.Format("https://{0}/owa/?to={1}&ae=Item&a=New&t=IPM.Note&exvsurl=0", myExchangeService.Url.Host, email);

Now, with the last version, it is no longer possible. How can we do now ?

Thanks for help.