Post box
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Post_box_on_Lowerson_Road.jpg/250px-Post_box_on_Lowerson_Road.jpg)
A post box, also known as pillar box, also known as a collection box, mailbox, letter box or drop box (American English) is a box where people can put mail for sending. The mail is collected by the agents of the postal service.
The term post box can also refer to a private letter box for incoming mail.