E-mail server and service e-mail providing system using the same

An e-mail transfer server connected with n terminals (n is an integer more than 2) via a communication network, comprises:

• an e-mail database which stores a service e-mail and an advertisement e-mail;
• an advertisement e-mail transmitting section which transmits an advertisement e-mail to a first terminal of said n terminals;
• an advertisement e-mail receiving section which receives said advertisement e-mail while said advertisement e-mail is sequentially transferred from a transfer source terminal of said n terminals to a transfer destination terminal of said n terminals, the received advertisement e-mail contains an e-mail addresses of said transfer source terminal and an e-mail address of said transfer destination terminal;
• an address extracting section which extracts said e-mail addresses of said transfer source terminal and said transfer destination terminal from the received advertisement e-mail;
• and
• a service e-mail transmitting section which transmits said service e-mail to said n terminals based on the extracted e-mail addresses when a transmission condition of said service e-mail is satisfied, and said n terminals satisfies a transfer constraint condition of said advertisement e-mail.

A recording medium storing a program for an e-mail transfer method in an e-mail server connected with n terminals (n is an integer more than 2) via a communication network, said method comprises:

• (a) transmitting an advertisement e-mail to a first terminal of said n terminals;
• (b) receiving said advertisement e-mail while said advertisement e-mail is sequentially transferred from a transfer source terminal of said n terminals to a transfer destination terminal of said n terminals, the received advertisement e-mail contains an e-mail addresses of said transfer source terminal and an e-mail address of said transfer destination terminal;
• (c) extracting said e-mail addresses of said transfer source terminal and said transfer destination terminal from the received advertisement e-mail;
• and
• (d) transmitting a service e-mail to said n terminals based on the extracted e-mail addresses when a transmission condition of said service e-mail is satisfied, and said n terminals satisfies a transfer constraint condition of said advertisement e-mail.