If I send inmate's letter via certified, will he receive it faster?

Maybe a few hours earlier than the other inmates at mail call, or a few hours later. They will likely call him to the administration building to sign for it, and that would be on their schedule as they are not treating this mail any different than the others - all incoming mail is opened, read and inspected for contraband before the handed out. We think certified mail is not necessary because of where he is.