No... It cannot be sent through USPS to P.O. Boxes.
6-10 days depending how you mailed it.
no its returned to your address or just stays at the post office
1 to 14 days or more
Not on the outside if you wrap them and put them in another box that would be fine.
1 to 14 days or more
The post office has the option of returning the letter to sender, if there is insufficient postage.
Next morning.
3.5 inches by 5 inches I mailed one out and it seemed to work. Anything smaller will be kept by the post office or returned to sender.
1 to 14 days or more
first class 3 to 5 days
3-5 days
A package mailed at the post office weighs 584 grams What is its weight in pounds?approximately 1.2848 pounds