Mail

The postal system is a system by which written documents typically enclosed in envelopes, and also small packages containing other matter, are delivered to destinations around the world. Anything sent through the postal system is called mail or post.

Related Topics:
Document - Envelope

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In principle, a postal service can be private or official. Restrictions are generally placed on private systems by governments. Since the 19th century, national postal systems have generally been established as government monopolies with a fee on the article prepaid, often in the form of adhesive stamps. Government

Related Topics:
19th century - Stamp

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monopolies generally do not extend to delivery of parcels or to courier services which provide express delivery.

Related Topics:
Parcel - Courier

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Postal systems often have functions other than sending letters. In some countries, the postal system also has some authority over telephone and telegraph systems. In others, postal systems allow for savings accounts and handling applications for passports.

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