Mail order
Mail order is the buying of goods or services by mail delivery. The buyer places an order for the desired products with the merchant through some remote methods such as: Sending an order form in the mail Placing an order by telephone call Placing an order with a travelling agent Filling in an order form on a website or mobile app — if the product information is also mainly obtained online rather than via a paper catalogue or via television, this mail-order model is called online shopping or e-commerce Then, the products are delivered to the customer.