A greeting card is an illustrated, folded card featuring an expression of friendship or other sentiment. Although greeting cards are usually given on special occasions such as birthdays, Christmas or other holidays, they are also sent to convey thanks or express other feeling. Greeting cards, usually packaged with an envelope, come in a variety of styles. There are both mass-produced as well as handmade versions that are distributed by hundreds of companies large and small. While typically inexpensive, more elaborate cards with die-cuts or glued-on decorations may be more expensive.
Hallmark Cards and American Greetings are the largest producers of greeting cards in the world. In the United Kingdom, it is estimated that one billion pounds are spent on greeting cards every year, with the average person sending 55 cards per year.
In western countries and increasingly in other societies, many people traditionally mail seasonally themed cards to their friends and relatives in December. Many service businesses also send cards to their customers in this season, usually with a universally acceptable non-religious message such as "happy holidays" or "seasons's greetings".
The Greeting Card Association is an international trade organization representing the interests of greeting card and stationery manufacturers. John Beeder, former president of the Greeting Card Association, says greeting cards are effective tools to communicate important feelings to people you care about: "Anyone feels great when they receive an unexpected card in the mail. For me, there’s nothing like a greeting card to send a special message. I’m proud to be a part of an industry that not only keeps people connected, but uses both imagery and the power of words to help us express our emotions.”
Types of greeting cards 
Standard Greeting Cards: A standard greeting card is printed on high-quality paper (such as card stock), and is rectangular and folded, with a picture or decorative motif on the front. Inside is a pre-printed message appropriate for the occasion, along with a blank space for the sender to add a signature or handwritten message. A matching envelope is sold with the card. Some cards and envelopes feature fancy materials, such as gold leaf, ribbons or glitter.
Photo Greeting Cards: In recent years, photo greeting cards have gained widespread popularity and come in two main types. The first type are photo insert cards in which a hole has been cut in the center. Your photo slides in just like a frame. The second type are printed photo cards in which the photo is combined with artwork and printed, usually on a high-end digital press, directly onto the face of the card. Both types are most popular for sending holiday greetings such as Christmas, Hanukkah & for baby showers.
Personalised Greeting Cards: Websites using special personalisation technology, such as Moonpig, allow consumers to personalise a card which is then printed and sent directly to the recipient.
Reusable Greeting Cards: These are greeting cards for the budget conscious. There are two common formats for reusable cards. Firstly there are cards with slits in them positioned to hold pages. Secondly there notepad style cards where pages stick to the back of the cards. The pages that have been used for reusable cards can be removed after being received and fresh pages can be used to reuse the cards.
Risqué Greeting Cards: Some companies offer risqué greeting cards, with adult-based humor and cartoons. The humor in these cards can sometimes be offensive to more conservative parts of the population.
Musical Greeting Cards: Recently greeting cards have been made that play music or sound when they are opened. They are commonly 3D handmade birthday cards which play traditional celebration songs such as Happy Birthday To You.
Electronic Greeting Cards: (also called E-cards) Greeting cards can also be sent electronically. Flash-based cards can be sent by email, and many sites such as Facebook enable you to send greetings. More recently, services have launched which enable you to send greetings to a mobile phone by text message. Many of these electronic services offer open or anonymous chat, to enable further discussion.
Pop-Up Cards: Pop-Up Cards are normally cards that, once opened, have a picture coming outward, giving the reader a surprise.
Pictures and printed messages in greeting cards come in various styles, from fine art to humorous to profane. Non-specific cards, unrelated to any occasion, might feature a picture (or a pocket to paste in a personal photograph) but no pre-printed message.
The custom of sending greeting cards can be traced back to the ancient Chinese, who exchanged messages of good will to celebrate the New Year, and to the early Egyptians, who conveyed their greetings on papyrus scrolls. By the early 15th century, handmade paper greeting cards were being exchanged in Europe. The Germans are known to have printed New Year's greetings from woodcuts as early as 1400, and handmade paper Valentines were being exchanged in various parts of Europe in the early to mid-15th century, with the oldest Valentine in existence being in the British Museum.
By the 1850s, the greeting card had been transformed from a relatively expensive, handmade and hand-delivered gift to a popular and affordable means of personal communication, due largely to advances in printing, mechanization, and a reduction in postal rates with the introduction of the postage stamp. This was followed by new trends like Christmas cards, the first of which appeared in published form in London in 1843 when Sir Henry Cole hired artist John Calcott Horsley to design a holiday card that he could send to his friends and acquaintances. In the 1860s, companies like Marcus Ward & Co, Goodall and Charles Bennett began the mass production of greeting cards. They employed well known artists such as Kate Greenaway and Walter Crane as illustrators and card designers.
Technical developments like color lithography in 1930 propelled the manufactured greeting card industry forward. Humorous greeting cards, known as studio cards, became popular in the late 1940s and 1950s.
In the 1970s Recycled Paper Greetings, a small company needing to establish a competing identity against the large companies like Hallmark Cards, began publishing humorous "whimsical" card designs with the artist's name credited on the back. This was away from what was known as the standard look (sometimes called the Hallmark look.) By the 1980s there was a thriving market for what were now called "alternative" greeting cards, and the name stuck even though these "alternative" cards changed the look of the entire industry.
Postcards, which are single-sided without the fold, can function in a manner somewhat similar to greeting cards. Postcards appeared fairly early on in the history of the postal service as a cheaper way of sending messages, especially those of a tourist nature.
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See also 
|Wikimedia Commons has media related to: Greeting cards|
- Birth announcement
- Cardboard engineering
- Christmas card
- Love Coupon
- Valentine's Day
- Sean Coughlan (12 October 2006). "Card sharps". BBC News. Retrieved 2006-10-14.
- Michele Karl (January 2003). Greetings With Love: The Book of Valentines. Pelican Publishing. p. 19. ISBN 978-1-56554-993-7.
- The British Postal Museum & Archive — Rowland Hill’s Postal Reforms