An accepting unit accepts one or more HTML files and stores them in a storing unit. A data extracting unit reads each HTML file from the storing unit, detects a keyword corresponding to a receiver in the HTML file, and extracts data that contains the keyword from the HTML file. A data combining unit stores the extracted data to a corresponding buffer in the storing unit, among buffers which have been reserved for multiple receivers. Once the extraction of data from each HTML file has completed for all receivers, a sending unit sends the data stored in the buffers to the corresponding receivers.