I went in as a capt but I saw the mail guys every day and loading and unloading that plane looks like torture to me. Now some guys/girls didnt mind it but it really depends if you like spending an hour loading a 402 for a 15 minute flight-waiting a couple of hours at an airport post office and loading up for a return 15 min flight. Hope some pilots who actually flew the mail can jump in here-they can shed bettr light than I. good luck