An information processing method includes storing information identifying an external service and information of an acquisition method for acquiring folder information from the external service; receiving, from a device, a request to acquire the folder information from the external service; identifying the acquisition method for acquiring the folder information from the external service, based on the stored information; acquiring the folder information from the external service, based on the identified acquisition method; and sending the acquired folder information to the device. When the identified acquisition method is a first acquisition method, folder information of a hierarchy of a specified folder and in a predetermined number of lower hierarchies is acquired from the external service. When the identified acquisition method is a second acquisition method, folder information of a hierarchy of a specified folder and in all lower hierarchies is acquired from the external service.