The present invention generally relates to an Internet value-added service system and method for providing a conventional value-added service which has been provided in a web site with a message transmission medium of the Internet. More specifically, when an advertiser puts an advertisement through the message transmission medium of the Internet, the value-added service is also provided with the advertisement to improve advertising effects of the advertiser. Instead, SMS (short message service) is provided together in transmission of email to solve inconvenience of email reception, which results in replacement of email reception with the SMS.