“But he sent it to you, didn't he?” “No, he sent it to himself c/o me.”.
You write c/o before an address on an envelope when you are sending it to someone who is staying or working at that address, often for only a short time. c/o is an abbreviation for `care of'. Mr A D Bright, c/o Sherman Ltd, 62 Burton Road, Bristol
care of. the written abbreviation of care of , used especially in addresses when you are sending a letter or package to someone who is living in someone else's house
at the address of; something written on a package or letter when the intended recipient is not the official resident