How does the next paragraph end?

How to mail packages faster
Use a sturdy box (or envelope) with packing or strapping tape on all the seams.
If the envelope or box opens in transit, the post office will need to reassemble it, and it will take a lot longer.
Print your return address and the recipient's address.
Use the 9-digit zip code. Go to usps.com () and look up the recipient's address.