1) PO concern 2) Certain daily deliveries 3) Drops in a box 4) Drops in a box on the street 5) Drops in a post office slot 6) Drops in a slot 7) Drops in the letter box 8) Posts 9) Posts a letter 10) Protective armors 11) Puts in a postbox 12) Puts in the letter box 13) Puts in the post 14) Puts into the postbox 1) Posts 2) Sends 3) Sends out 4) Sends to 5) Ships