From the Simple English Wikipedia, the free encyclopedia that anyone can change
Mail is part of the postal system. The postal system is a system where written documents and small packages are taken (delivered) to places around the world. Anything sent through the postal system is called mail or post.
A postal service can be private or public. Governments often make rules about private postal delivery systems. Since the 19th century, national postal systems have generally been controlled entirely by the governments. The governments make people pay a fee to send something. This fee is usually in the form of stamps. Governments usually only let private postal services deliver parcel (non-mail) packages.
Postal systems often do things other than sending letters. In some countries, the postal system also is in charge of telephone and telegraph systems. In other countries, postal systems are in charge of passports.
