APO
Army Post Office that delivers mail to Army or Air Force personnel.
MEDIA MAIL
A shipping method for books, magazines, sound recordings, videos, and other types of media.
DISPATCH
Mail that is loaded and ready for transportation.
STREET--TIME
The amount of time a city carrier spends delivering mail after performing their administrative duties.
FLAT RATE
When the price of shipping is not related to the weight, shape, or size of the shipment.
PARCEL
A piece of mail that is not a postcard, letter, or large flat envelope.
FORWARD
When a piece of mail is being sent to a different address other than the usual address.
BULK MAIL
A form of discounted mail for those who ship large quantities of mail at one time.
COMMEMORATIVE STAMPS
Stamps issued to honor a particular individual, event, activity, or moment of importance.
POST OFFICE BOX
A uniquely addressed and labeled locked box at a specific post office.
PRIORITY MAIL EXPRESS
The quickest mail service with overnight delivery to most US locations.
ZONE
The distance a domestic shipment must travel.
CANCELED STAMP
A stamp that has been marked as used but has not traveled through the mail.
SPECIAL DELIVERY
When mail is delivered by a special messenger as soon as it is received at the post office rather than by the regular delivery system.
TRACKING
The way to see where a package is and when it will be delivered.