Postal Letter

Can someone help me with USPS tracking ID?

I'm selling something on Amazon, so I go to the USPS store and put my item into a little 6x10 cushion parcel. It was a first-class parcel. I send it, and now I have to confirm the shipment on Amazon. They ask me for my tracking ID. What is this? I can't find anything on my receipt. The only thing that might be it is Bill#, but that's probably not it. How can I find my tracking ID? Someone help

Public Comments

1. Do you have a delivery confirmation number? It would begin with a 91 number. In the future you must ask for delivery confirmation which will cost 70 or 80 cents more. If you print out your labels on line you will get it free.