Cat Post
Like the owl post in the Harry Potter series, cats can now be used in minecraft to send an item to another player. In order to utilize this, your recipient must be online and in the same world as you. Find a tamed cat and lay an item at it’s feet, within 2 meters. Then, while standing no further than 10 meters away, say “deliver to PlayerName”, where PlayerName is replaced with the recipient’s name, which is case sensitive. If the delivery was successful, you will hear a meow and the cat will disappear. If the delivery was unsuccessful for any reason, the cat will hiss.
If you receive a cat post, be sure to right click on the cat to un-sit it, so that it can return to it’s owner.