Mail order refers to buying of products which are delivered through mails. Usually orders are placed over telephone or through some web site. The main advantage of mail order is that the customer is not required to go to a retail shop for purchasing the items, and this saves a lot of time and energy. On receiving the order, the merchant directly sends the products purchased by the consumer to the mailing address as mentioned. Mail order facilities have even crossed geographical boundaries. In other words, customers in Baltimore can purchase products or services from abroad. A catalog contains the list of products and services offered by a company to customers for purchase. Consumers can refer to the catalog and order the same. The catalog is usually published in newspaper, magazines, websites, etc, through which the products and services are promoted. Mail orders are specially beneficial to people living in remote places in Baltimore where moving from one place to another is easily possible. People living in remote areas in Baltimore can order products through mails and receive the same without hassles. A point of caution though, one needs to be very careful while ordering goods over phone to avoid fraud.