Communication control method for electronic mail system

A communication control method for an electronic mail system comprising a plurality of electronic mail devices, wherein an electronic mail device to serve as a sender adds first identification information to an e-mail, attaches an image of specific conditions to the e-mail and transmits the e-mail;

• when identifying the first identification information in the received email, an electronic mail device to serve as a receiver adds second identification information and local capability information to an e-mail to be returned to the sender and returns the e-mail;
• when identifying the second identification information in the received e-mail, the electronic mail device to serve as a sender acquires the capability information from the e-mail, adds third identification information to an e-mail to be returned to the receiver, attaches an image matched with the acquired capability information to the e-mail and returns the e-mail;
• and
• when identifying the third identification information in the received email received, the electronic mail device to serve as a receiver processes the image attached to the received e-mail.

A communication control method for an electronic mail system comprising a plurality of electronic mail devices, wherein

• an electronic mail device to serve as a sender forms an image file by converting an image of specific conditions defined by a standard specification of an internet facsimile device, writes identification information in a comment field present in a format of the image file, attaches the image file containing the identification information to an e-mail and transmits the e-mail to a receiver;
• when identifying the identification information present in the image file attached to the received e-mail, an electronic mail device to serve as a receiver adds the identification information and local capability information to an e-mail to be returned to the sender and returns the e-mail;
• when identifying the identification information in the e-mail retuned, the electronic mail device to serve as the sender acquires the capability information from the returned e-mail, attaches an image matched with the acquired capability information to an e-mail to be returned to the receiver and returns the e-mail;
• and
• the electronic mail device to serve as the receiver processes the image attached to the received e-mail.

A communication control method for an electronic mail system comprising a plurality of electronic mail devices, wherein

• an electronic mail device to serve a sender, forms an image file by converting an image of specific conditions defined by a standard specification of an internet facsimile device, writes first identification information in a comment field present in a format of the image file, attaches the image file containing the first identification information to an e-mail to be transmitted and transmits the e-mail to a sender;
• when identifying the first identification information present in the image file attached to the received e-mail, an electronic mail device to serve as the receiver adds second identification information and local capability information to an e-mail to be returned to the sender and returns the e-mail;
• when identifying the second identification information in the returned e-mail, the electronic mail device to serve as the sender acquires the local capability information from that e-mail, attaches an image matched with the acquired capability information to an e-mail to be returned to the receiver and returns the e-mail;
• and
• the electronic mail device to serve as the receiver processes the image attached to the received e-mail.

An e-mail device for transmitting and receiving an image by an e-mail via an Internet, comprising:

• a first image forming unit configured to form a first image under specific conditions defined by a standard specification of an internet facsimile device;
• a second image forming unit configured to form a second image that matches with local capability information of an e-mail device to serve as a receiver;
• an identification information adding unit configured to add identification information including first, second or third identification information to an e-mail in accordance with a standard e-mail format;
• and
• a transmitting unit configured to transmit the first or second image in an e-mail format;
• wherein the transmitting unit attaches the first image to the e-mail to which the first identification information has been added by the identification information adding unit, and transmits the e-mail to the receiver.

An e-mail device for transmitting and receiving an image by an e-mail via an Internet, comprising:

• a first image forming unit configured to form a first image under specific conditions defined by a standard specification of an internet facsimile device;
• a second image forming unit configured to form a second image that matches with local capability information of an e-mail device to serve as a receiver,
• an identification information adding unit configured to add first identification information to an image file obtained by converting the first image into an e-mail format, or add second identification information to an e-mail in accordance with a standard email format;
• and
• a transmitting unit configured to transmit the first or second image in an e-mail format;
• wherein the transmitting unit attaches the first image to the e-mail to which the first identification information has been added by the identification information adding unit, and transmits the e-mail to the receiver.