Imagine you're sending a present to your friend who lives far away. You put the present in a box, and then you need to send it on a journey to get to your friend's house.
There are special people called "mail carriers" who work for companies like UPS, FedEx, or the post office. These mail carriers are like magical messengers who will take your box and deliver it to your friend's house.
You need to put your friend's address on the box so the mail carrier knows where to go. The mail carrier will then take your box and put it in a special truck or plane that's just for carrying packages.
While the package is on its journey, there are many people who will check on it to make sure it's safe and on track to get to the right place. They might scan it with a special machine or check the tracking number to see where it is.
Finally, after a few days, your friend's package will arrive! The mail carrier will bring it right to your friend's front door, and your friend can open it up and enjoy their present from you.