Question about shipping at the post office?

Question

If I have a yellow envelope, like those big yellow ones and I bring it to the post office and I tell them I need to ship it do I need to write the address on the yellow envelope or do I tell them the address and they print out a shipping label? thanks

Answer 1

you would normally write it out but i have seen some post offices do it for you and a shipping label maybe

Answer 2

You write it out.