Abstract: An information processing system includes circuitry that creates first marketing data including first content and first uniform resource locator (URL) information. The first content is specified in accordance with an operation performed on a first information terminal. The first URL information is according to a customer. In response to access by a terminal of the customer to a page indicated by the first URL information after a first medium based on the first marketing data is delivered to the customer, the circuitry transmits an access notification to a second information terminal to notify the access to the page indicated by the first URL information. The circuitry receives second content information related to the access notification and specified in accordance with an operation performed on the second information terminal. The circuitry creates second marketing data related to the customer and including second content indicated by the received second content information.