A postcard is a rectangular piece of thick paper or thin cardboard primarily used for mailing without an envelope. However, shape, there is always not needed to be rectangular and can be made of other materials as well. Along with the general mailing, it is also used for greetings and branding. In the area of marketing they are very successful and have many branding benefits for small businesses.As a mean of marketing, postcards keep a competitor always in a dark in respect to advertising on news paper, television and other means of marketing. Postcards can be used for many purposes and utilities. Even, with a single mail through a post card you can find new customers as well as can assure yourself repeat business as well. And most importantly post cards are even very expensive to print. It is even easier to measure your marketing results with postcards when asked recipient to bring them for a special discount to store or shop.