A post office is a public department that provides a customer service to the public and handles their mail needs. Post offices offer mail-related services such as acceptance of letters and parcels; provision of post office boxes; and sale of postage stamps, packaging, and stationery. In addition, many post offices offer additional services: providing and accepting government forms, processing government services and fees, and banking services. The chief administrator of a post office is called a postmaster.
The United States Postal Service is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, including its insular areas and associated states. It is one of the few government agencies explicitly authorized by the United States Constitution.
The mail or post is a system for physically transporting postcards, letters, and parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid-19th century, national postal systems have generally been established as a government monopoly, with a fee on the article prepaid. Proof of payment is usually in the form of an adhesive postage stamp, but a postage meter is also used for bulk mailing. Modern private postal systems are distinguished from national postal agencies by the terms "courier" or "delivery service".
A ZIP Code is a postal code used by the United States Postal Service (USPS). Introduced in 1963, the basic format consists of five digits. In 1983, an extended ZIP+4 code was introduced; it includes the five digits of the ZIP Code, followed by a hyphen and four digits that designate a more specific location.
The Private Express Statutes (PES) are a group of United States federal civil and criminal laws placing various restrictions on the carriage and delivery of letters by all organizations other than the United States Postal Service.
Universal service is an economic, legal and business term used mostly in regulated industries, referring to the practice of providing a baseline level of services to every resident of a country. An example of this concept is found in the US Telecommunications Act of 1996, whose goals are:
Registered mail is a mail service offered by postal services in many countries, which allows the sender proof of mailing via a mailing receipt and, upon request, electronic verification that an article was delivered or that a delivery attempt was made. Depending on the country, additional services may also be available, such as:
POSTNET is a barcode symbology used by the United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars. Most often, the delivery point is added, usually being the last two digits of the address or PO box number.
Franking comprises all devices, markings, or combinations thereof ("franks") applied to mails of any class which qualifies them to be postally serviced. Types of franks include uncanceled and precanceled postage stamps, impressions applied via postage meter, official use "Penalty" franks, Business Reply Mail (BRM), and other permit Imprints (Indicia), manuscript and facsimile "franking privilege" signatures, "soldier's mail" markings, and any other forms authorized by the 191 postal administrations that are members of the Universal Postal Union.
A post office box is a uniquely addressable lockable box located on the premises of a post office station.
Advertising mail, also known as direct mail, junk mail, mailshot or admail, is the delivery of advertising material to recipients of postal mail. The delivery of advertising mail forms a large and growing service for many postal services, and direct-mail marketing forms a significant portion of the direct marketing industry. Some organizations attempt to help people opt out of receiving advertising mail, in many cases motivated by a concern over its negative environmental impact.
The system for mail delivery in the United States has developed with the nation. Rates were based on the distance between sender and receiver in the early years of the nation. In the middle of the 19th century, rates stabilized to one price regardless of distance. Rates were relatively unchanged until 1968, when the price was increased every few years by a small amount. Comparing the increases with a price index, the price of a first class stamp has been steady. The logo for the Post Office showed a man on a running horse, even as the railroads and then motorized trucks moved mail. In 1970, the Post Office became the Postal Service, with rates set by the Postal Regulatory Commission, and some oversight by the Congress. Air mail became standard in 1975. In the 21st century, prices were segmented to match the sorting machinery in use; letters too large for the machines required slightly higher postage.
An optional information line (OEL) is a line above the postal address on mail in the United States. The lines are usually seen on bulk mail to indicate the sorting and separation that allows the mail to have a lower postal rate.
The Intelligent Mail Barcode is a 65-bar barcode for use on mail in the United States. The term "Intelligent Mail" refers to services offered by the United States Postal Service for domestic mail delivery. The IM barcode is intended to provide greater information and functionality than its predecessors POSTNET and PLANET. An Intelligent Mail barcode has also been referred to as a One Code Solution and a 4-State Customer Barcode, abbreviated 4CB, 4-CB or USPS4CB. The complete specification can be found in USPS Document USPS-B-3200. It effectively incorporates the routing ZIP code and tracking information included in previously used postal barcode standards.
National Change of Address (NCOALink) "is a secure dataset of approximately 160 million permanent change-of-address (COA) records consisting of the names and addresses of individuals, families and businesses who have filed a change-of-address with the USPS". It is maintained by the United States Postal Service and access to it is licensed to service providers and made available to mailers. There are six licenses available including Full Service Providers and Limited Service Providers. The use of NCOALink is required in order to obtain bulk mail rates, as it minimizes the number of UAA mailpieces saving the mailer money and reducing the USPS's processing of this type of mail.
First used by postal services to expedite and automate mail processing, mail sorting systems are now also used by corporations and other mailers to presort mail prior to delivery in order to earn discounts on postage. In the United States, for example, presort discounts can reduce the cost of First-Class Mail from $0.42 to as low as $0.324. Many companies also use mail sorters to handle incoming mail such as checks, orders and correspondence.
The Post Office Box Lobby Recycling program is a project of the United States Postal Service (USPS) that was created on October 28, 2008, for consumers to recycle paper items, using recycling bins placed in the customer lobbies of post office buildings. Some of the goals of the program are to reduce the amount of paper waste going to landfills, which helps to reduce the consumption of fiber from trees used for paper production and greenhouse gas emissions associated with waste disposal. USPS receives revenue from selling the material, and no tax dollars are used to fund the project. USPS was reported as having recycled over 200,000 tons of waste in 2009, including paper, plastics and other waste.
A mail sack or mailsack is a mail bag used to carry large quantities of mail.
A Network Distribution Center (NDC) is a highly mechanized mail processing plant of the United States Postal Service that distributes standard mail and package services in piece and bulk form.
