i would like to ask what if i upgrade my package? to premium hostingcan i have my own mail server and web server by upgrading my package?/ and what is the purpose of email accounts?! thx

Services are not sold as a package they are sold individually and are upgraded individually.

Last time I checked Bravenet were only selling shared hosting.

As a general rule if Bravenet don't mention something then they don't sell it. Hidden extras are few and far between.