Method for generation and sale of frankings, which can be used for sending mail from a customer to a receiver. The frankings are thus preferably produced on an electronic mailbox, whereby the generation and the printing out can be carried out in a highly personalized manner by using stored customer data and receiver addresses entered by the customer concerned. In addition to personalized address input a franking comprises a unique identification code which can be used for franking security as well as transport control and monitoring.