the csr's would rather mail if they could. unless your account shows all the requirements needed for that reciever already being in place, they are going to send out a tech. if you have a 222 and want it swapped for a 722, that can be mailed. beacuse a 222 meets all the requirements. however, if you have a 322 and no previous hd, then a tech will have to roll because you most likely do not have the correct dish. a 211 will require a tech roll for a 722 upgrade as it is a single tuner, and it is cabled differently, as previously explained. if dish can mail you the receiver, they prefer to do so when possible, as it is a lot less costly.