Patent ID: 6108690
Filing Date: 2000-08-22
Classification: G06Q

Abstract:
An electrical mail system in which there is provided a plurality of terminals connected by telecommunication lines, and in which respective terminals transmit and receive electrical mailes, comprising:a first terminal for transmitting a file to-be-transmitted as an electrical mail and necessary data for examining whether or not said file to-be-transmitted which is content of said electrical mail is capable of being received accurately as another electrical mail which is different from said electrical mail, said first terminal comprisinga guarantee indication instruction section for receiving a specification of said file to-be-transmitted and a transmission condition for instructing whether or not it causes indication of guarantee to add to indication of file when said file is received accurately, when the searched result denotes that indication of guarantee is not added, said file to-be-transmitted is outputted as a file A, while when the searched result denotes that indication of guarantee is added, adding said file to-be-transmitted to a file discrimination code for discriminating file, thus outputting as a file B;an acknowledgment file forming section for receiving said file B outputted from said guarantee indication instruction section, and for making necessary data from said file B for examining whether or not said file to-be-transmitted is capable of being received accurately, thus adding said file discrimination code to said data to render it an acknowledgment file, and for outputting said acknowledgment file and said file B; anda mail transmission section for receiving said file A outputted from said guarantee indication instruction section, thus rendering these files the electrical mails to transmit to said telecommunication line respectively; anda second terminal for receiving said electrical mail and said another electrical mail and for guaranteeing content of said electrical mail by examining whether or not said file to-be-transmitted which is content of said electrical mail is capable of being received accurately while using said data received by said another electrical mail.