User confirmation for retransmission of compressed e-mail attachments

A control method of an e-mail transmission apparatus capable of transmitting an e-mail to which image data is attached, comprising:

• setting a transmission destination address, and a reply destination address;
• transmitting an e-mail, to which image data is attached, to a transmission destination address;
• generating retransmission confirmation e-mail related to retransmission confirmation information for making a user of a client apparatus corresponding to the reply destination address to designate a request for a retransmission of the e-mail in which the transmission error has occurred if a transmission error due to size excess of the e-mail transmitted by said e-mail transmitting unit occurs;
• transmitting the retransmission confirmation e-mail to the reply destination address;
• receiving reply information indicating that the retransmission of the e-mail is requested by the user of the client apparatus in case that the retransmission of the e-mail is requested by the user of the client apparatus in response to a transmission of the retransmission confirmation e-mail;
• and
• transmitting an e-mail attached to image data, whose size is smaller than a size of the image data attached to the e-mail in which the transmission error has occurred, to the transmission destination address in a case where the reply information is received;
• and
• registering the retransmission confirmation information in an apparatus different from the client apparatus,
• wherein the generating step generates the retransmission confirmation e-mail which contains reference information for referring to the retransmission confirmation information registered in said registration step.

A program stored on a computer-readable medium for causing a computer to control an e-mail transmission apparatus capable of transmitting an e-mail to which image data is attached, the program causing the computer to execute the steps of:

• setting a transmission destination address, and a reply destination address;
• transmitting an e-mail, to which image data is attached, to a transmission destination address;
• generating retransmission confirmation e-mail related to retransmission confirmation information for making a user of a client apparatus corresponding to the reply destination address to designate a request for a retransmission of the e-mail in which the transmission error has occurred if a transmission error due to size excess of the e-mail transmitted by said e-mail transmitting unit occurs;
• transmitting the retransmission confirmation e-mail to the reply destination;
• receiving reply information indicating that the retransmission of the e-mail is requested by the user of the client apparatus in case that the retransmission of the e-mail is requested by the user of the client apparatus in response to a transmission of the retransmission confirmation e-mail;
• and
• transmitting an e-mail attached to image data, whose size is smaller than a size of the image data attached to the e-mail in which the transmission error has occurred, to the transmission destination address in a case where the reply information is received;
• and
• registering the retransmission confirmation information in an apparatus different from the client apparatus,
• wherein the generating step generates the retransmission confirmation e-mail which contains reference information for referring to the retransmission confirmation information registered in said registration step.