Abstract: In a mail sending apparatus, an attached file generation unit generates an attached file in which an access method for a designated file is described. A mail tool attaches the attached file to a mail message to form mail data, and transmits it to a designated destination through a mail server. In a mail receiving apparatus, a mail reader extracts the attached file from the mail data received through a mail server. An attached file analysis unit analyzes the access method described in the attached file. A file reception unit accesses a file management/transmission tool in accordance with the access method to receive and display the designated file.

Abstract: In a mail sending apparatus, an attached file generation unit generates an attached file in which an access method for a designated file is described. A mail tool attaches the attached file to a mail message to form mail data, and transmits it to a designated destination through a mail server. In a mail receiving apparatus, a mail reader extracts the attached file from the mail data received through a mail server. An attached file analysis unit analyzes the access method described in the attached file. A file reception unit accesses a file management/transmission tool in accordance with the access method to receive and display the designated file.

Abstract: A proxy server is present in the path between the client and server, and intervenes in communication therebetween. Upon receiving a request from the client according to the HTTP protocol, the proxy server specifies a server based on the request, and determines the communication protocol to be used in the communication with the specified server. If the CM protocol is determined, the proxy server generates request data suitable for the CM protocol by adding necessary information, so as to implement the request contents included in the request, and communicates with the server. The proxy server sends back the processing result based on the request to the client according to the HTTP protocol.