To provide an image forming apparatus including a message acquirer that acquires messages from a server that provides messages posted from a plurality of devices to each of the plurality of devices in a chronological order, a print data generator that generates print data, based on the acquired message, a message determiner that determines whether a print execution phrase is included in the acquired message, and a print data output controller that performs control to output the print data if it is determined that the print execution phrase is included.