To make an electric settlement possible by an electronic mail with a password available just once by an orderer and confirming the payment request at an electronic settlement financial means.

An orderer 1 is connected to the requested and a payment electronic settlement financial means 5 with an electronic mail through the electronic mail by a network 3. The orderer 1 sends at once a recipient of the order and the payment electronic settlement financial means 5 the electronic mail appended with a password A available just once which the orderer 1 freely decided, the recipient of the order 4 adds a request item, send it to the payment electronic settlement financial means 5, leaving the password A of the electronic mail send by the order 1 to the recipient of the order 4; the payment electronic settlement financial means 5 collates the item to the password A of the electronic mail of direct payment request from the orderer 1 to the payment electronic settlement financial means 5, confirms that it is the payment request by the orderer 1 and then the payment is made by the payment electronic settlement financial means 5.