Is it possible to be accessed programmatically (C#) the mail contacts and the mail users through the EWS API, using an Active Directory user's account with full access permissions? If yes, how exactly?

Hi Visigoth_1, Sorry for delaying response. But for your question, I would suggest you seek the solution in the Development Forum: http://social.technet.microsoft.com/Forums/en-US/exchangesvrdevelopment/threads Frank Wang