USPS: Do you know a flat-sized mailpiece when you see one?

The Postal Service wants to clear up a few misunderstandings about flat-sized mailpieces. Here’s what you should know: • First things first: Know how to recognize flat-sized mailpieces. The Domestic Mail Manual has all the information you need, especially chapters 101 and 201. Generally speaking, flat-sized mailpieces are no more than 15 inches long, no…

 Continue reading