pillarbox

A pillarbox, also known as a letterbox, is a small box mounted on the exterior of a building, typically on the front door, used for the collection of mail. The term "pillarbox" is derived from the fact that the box is often mounted on a pillar or post. Pillarboxes are commonly found in the United Kingdom and other countries that use the postal system.

The design of a pillarbox can vary, but it typically consists of a rectangular box with a hinged lid. The box is usually made of metal, such as brass or stainless steel, and is painted in a distinctive color, often red or blue. The hinged lid allows for easy access to the mail inside. Some pillarboxes may also have a small window or slot to allow for the insertion of mail.

Pillarboxes are an iconic feature of many streets and neighborhoods, and they have become a symbol of the postal service in many countries. They are often used as a reference point for directions and are featured in various forms of media, including literature, film, and television. The use of pillarboxes has declined in recent years due to the rise of digital communication and the increasing use of mailboxes, but they remain a familiar sight in many urban areas.