Collecting Stamps is a Joy
The stamp's shape is usually that of a small rectangle of varying proportions, though triangles or other shapes are occasionally used. The stamp is affixed to an envelope or other postal cover (i.e., packet, box, mailing cylinder) that the customer wishes to send. The item is then processed by the postal system, where a postmark, sometimes known as a cancellation mark, is usually applied over the stamp and cover; this procedure marks the stamp as used, which prevents its reuse. The postmark indicates the date and point of origin of the mailing. The mailed item is then delivered to the address that the customer has applied to the envelope or cover.

The postage stamp afforded convenience for both the mailer and postal officials, more efficiently recovered costs for the postal service, and ultimately resulted in a better, faster postal system. With the conveniences stamps offered, their use resulted in greatly increased mailings during the 19th and 20th centuries. Postage stamps during this era were the most popular way of paying for mail, but by the end of the 20th century were rapidly being eclipsed by the use of metered postage and bulk mailing by businesses.) The same result with respect to communications by private parties occurred over the last decade of the 20th century and the first decade of the 21st due to declining cost of long distance telephone communications and the development and explosive spread of electronic mailing ("e-mail" via the Internet) and bill paying systems had.

Rowland Hill
The Englishman Sir Rowland Hill started to take an interest in postal reform in 1835. In 1836, a Member of Parliament, Robert Wallace, provided Hill with numerous books and documents, which Hill described as a "half hundred weight of material". Hill commenced a detailed study of these documents, which led him to the publication, in early 1837, of a pamphlet entitled "Post Office Reform its Importance and Practicability". He submitted a copy of this to the Chancellor of the Exchequer, Thomas Spring-Rice, on 4 January 1837. This first edition was marked "private and confidential" and was not released to the general public. The Chancellor summoned Hill to a meeting during which the Chancellor suggested improvements and changes to be presented in a supplement, which Hill duly produced and supplied on 28 January 1837.
Rowland Hill then received a summons to give evidence before the Commission for Post Office Enquiry on 13 February 1837. During his evidence, he read from the letter he had written to the Chancellor, which included the statement that a notation of paid postage could be created "by using a bit of paper just large enough to bear the stamp, and covered at the back with a glutinous wash". This is the first publication of an unambiguous description of a modern adhesive postage stamp (though the term "postage stamp" did not yet exist at that time). Shortly afterward, the second edition of Hill's booklet, dated 22 February 1837, was published, and made available to the general public. This booklet, containing some 28,000 words, incorporated the supplement he gave to the Chancellor and the statements he made to the Commission.
Hansard records that on 15 December 1837, Mr Benjamin Hawes asked the Chancellor of the Exchequer "whether it was the intention of the Government to give effect to the recommendation of the Commissioners of the Post-office, contained in their ninth report relating to the reduction of the rates of postage, and the issuing of penny stamps?"
Hill's ideas for postage stamps and charging postage based upon weight soon took hold and were adopted in many countries throughout the world. With the new policy of charging by weight, using envelopes for mailing documents became the norm. Hill's brother, Edwin Hill, invented a prototype envelope-making machine that folded paper into envelopes quickly enough to match the pace of the growing demand for postage stamps.
Rowland Hill and the postal reforms he introduced to the UK postal system are commemorated on several postage issues of the United Kingdom.