To effectively perform processings as notice of issuance, application and reception of a coupon by utilizing a computer network.

In this system 10, the coupon is issued by an electronic mail box 12 which is connected with a communication channel and provided with a member and provided with a member database DB11 to store member information including attribute information of the member. In this case, an application candidate selecting condition to select an application candidate of the issuance of the coupon is inputted (#101), the member suitable for the application candidate selecting condition is selected based on the member information, guiding information to guide the issuance of the coupon is placed in the electronic mail box 12 of the selected member (#103), the coupon is issued when the issuance of the coupon is requested based on the guiding information (#106) by the system 10.