A Big Mail is a Co-Op mailing service. It is an envelope full of mail-order magazines, ad sheets, and circulars. Because every Mail-order dealer needs to advertise, the Big Mail earns you money from dealers who need to be included in your Big Mail. If you send Big Mails through the mail, these dealers will advertise with you. Many mail order operators are easily pulling in thousands of dollars a month with Co-Op mailings. They are doing nothing more than receiving money for sending out Big Mail packages stuffed with offers others have paid them to distribute. And the good news is you can do this too!