Useful information on image transmission is provided to a user who transmits an image in a network print technology.
Features of transmitted images from a first user are specified for the transmitted images, a correspondence relationship between the feature of the transmitted image and an implementation history of image printing on a second user side is specified for each second user, a value related to an implementation frequency of the image printing is calculated for each second user and for each feature based on the correspondence relationship specified for each second user, a first image is specified among the transmitted images for each second user, two or more second users who have the feature of the first image in common are extracted, a second image having a feature of an image that is not transmitted to a target user among the extracted two or more second users and having a feature of a transmitted image that has been printed by a non-target user other than the target user is specified, and the second image is notified to the first user that has transmitted the transmitted image to the target user.