Packaging is an important factor in any retail environment and a key element in most marketing strategies. Consumers react immediately to package shapes, and are influenced by them when making buying decisions. Different product categories are often easy to recognise by their characteristic form, for example chocolate boxes or milk cartons. On the other hand, a manufacturer of an exclusive product, such as jewellery or perfume, may deliberately choose an unusual, eye-catching form. Mail It! contains a large selection of structural designs for envelopes and packages to be sent by mail or parcel delivery services.