US Patent 8161115 System and method for effective mail transmission

A system and method for rapidly transmitting a large volume of e-mails. Based on domain names obtained from destination mailing addresses, a server 10 for a sender sorts e-mails to be transmitted, generates transfer data for each domain name by grouping e-mail data, and uses FTP to transmit the transfer data to servers 30 for distributors whose domain names correspond to those for which the transfer data were generated. At this time, compression is effective for improving the transmission of the transfer data. The server 30, upon receiving transfer data, analyzes the received transfer data to obtain the data for individual e-mails, and distributes the e-mail data to the mail boxes of individual recipients.