To provide a system that can award a valuable item such as a reward corresponding to the number of received advertisement mails without requiring a user to present official personal information.

The delivery system for advertisement information, which delivers advertisement information to a person having a portable telephone capable of using a portable mail system capable of transmitting an electronic mail to a portable telephone, comprises an advertisement information transmitting means for transmitting advertisement information by electronic mail to a portable telephone of a registered user, and a registration code notifying means for notifying the user via a communication network of a registration code effective in a rate payment system so configured that the connection of the telephone to a service center via the communication network and the transmission of the registration code to the service center subtracts a given amount from a telephone rate as a reward for the reception of the advertisement information.