If the recipient is not home the packages can usually be picked up at the local Fed-X office. I would feel more comfortable with it being at the office and accounted for rather than left on a doorstep (depending on the neighborhood) and I would not trust that all the drivers would "make sure it is in the shade".
If the recipient missed the shipment and then could not be bothered to drive to the local office well then....errrm...no comment.