COMMUNICATIONS METHOD, COMMUNICATIONS SYSTEM, COMMUNICATIONSDEVICE AND SERVER

摘要

A communications method, communications system, communications device, and server which confirm performance information of a receiver communications device without negotiating with the receiver communications device before sending data, and sends an image most suited to receiving capability of the receiver communications device. The sender reads out performance information of the receiver communications device stored typically in a server before sending data, and sends data after converting the format of data to be sent based on the performance information. The communications device communicates with the server and sends data in the form of electronic mail and TCP/IP communications. Since, image data is sent after converting its format to that best matched receiving capability of the receiver communications device, the receiver communications device can receive image data best suited to its performance,