Know how to use "fewer" and "less"? Find out.
method of merchandising in which the seller's offer is made through mass mailing of a circular or catalog or through an advertisement placed in a newspaper or magazine and in which the buyer places his order by mail. Delivery of the goods may be made by freight, express, or parcel post on a cash-on-delivery basis. Retail mail-order selling was developed primarily for rural customers, but it now includes millions of customers in urban areas