Abstract: In delivering various types of electronic files to a recipient specified by a sender, even after the operation of transmission is done, the transmission can be confirmed again before the electronic file is received by the recipient so as to securely cancel the delivery if necessary. When a delivery device acquires an electronic file from a sender, electronic mail for notification of electronic file deposit is transmitted to a recipient by an electronic mail transmission means. The recipient is then made to make a request for the reception of the electronic file to the sender through a means for providing a Web page for requesting electronic file reception. Electronic mail for requesting electronic file reception is transmitted to the sender by an electronic mail transmission means for requesting electronic file reception. Only when the reception of the electronic file is permitted, the electronic file is transmitted to the recipient by an electronic file transmission means.