I think

I think a Jedi would make an excellent mail-man. He would not bother with codes for the doors, a little bit of the force and they would open. He would have no problems opening malfunctioning mail boxes, a bit of the force, or if that does not work a swift jab with the lightsaber simplifies things. I also think that a small hovercraft would be useful when moving hundreds of kilos of mail around...