Postal systems

series of letters and digits for sorting mail

small piece of paper that is purchased and displayed on an item of mail as evidence of payment of postage

thumb|upright=1.3|A Mail carrier|postman collecting mail for delivery in [[Hong Kong, 2008]]

thumb|Illuminated address to see better at night An address is a collection of information, presented in a mostly fixed format, used to give the location of a building, apartment, or other structure or a plot of land, generally using political boundaries and street names as references, along with other identifiers such as house or apartment numbers and organization name. Some addresses also contain special codes, such as a postal code, to make identification easier and aid in the routing of mail.

World day of postal services on October 9, the anniversary of the World Postal Union

collection of names and addresses used to send material to multiple recipients

legal right in some European countries

thumb|Chasqui playing a (conch shell) in "Primer nueva corónica y buen gobierno" (drawing 168 folio 351).

mail sent with insufficient postage

Inspection or examination of mail

company or government agency in charge of transporting and delivering mail