JP4753794B2 - E-mail transfer system - Google Patents

Description

  The present invention relates to a system for transferring an electronic mail to which a data file is attached and an apparatus used in the system.

  As one means of information communication, an electronic mail system for exchanging information based on text data via a computer network is widely used. In recent electronic mail systems, it is possible to exchange not only text data but also arbitrary data files by attaching an arbitrary data file to an electronic mail body mainly composed of text data. (For example, refer to Patent Document 1). In addition, with the recent development of information communication technology, data communication via a wireless communication network used in mobile phones, PHS (Personal Handyphone System), etc. has become possible. Send and receive e-mail via

JP 2004-78394 A

  By the way, since the transmission medium is not physically divided like the wired communication, the wireless communication is more likely to cause a data transmission error than the wired communication. For this reason, measures such as adding error correction data or the like to communication data are taken, and in wireless communication, the effective communication speed cannot often be increased as much as wired communication.

  Therefore, for example, when an e-mail attached with a large-capacity data file is generated and transmitted from a mobile information terminal by a mobile information terminal, it may take a long time to complete the transmission of the e-mail. If the radio wave environment changes, data errors may increase and sometimes communication may be interrupted. Therefore, it is not preferable for the user to move the portable information terminal until the e-mail transmission is completed. . Therefore, when an electronic mail with a large capacity data file attached is transmitted / received in a wireless communication environment, the user may have to wait until the transmission / reception of the electronic mail is completed, and may feel stress.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to shorten a substantial waiting time of a user in transmission of an e-mail attached with a data file.

  In order to solve the above problems, the electronic mail transfer system according to the present invention transmits a data file attached to an electronic mail in advance on the terminal side that transmits the electronic mail, and accepts the input of the text of the electronic mail by the user. , Start sending the body of the entered email, and create an email with the data file attached by attaching the data file sent separately to the body of the sent email on the server side Forward.

  For example, according to a first aspect of the present invention, there is provided an e-mail transfer system that transfers an e-mail attached with a data file. After starting transmission of a data file attached to an e-mail, Yes, an e-mail creation / transmission terminal that starts transmission of an e-mail body including the e-mail destination, a data file storage device that receives and stores a data file transmitted from the e-mail creation / transmission terminal, and e-mail creation E-mail composition that receives an e-mail text sent from a sending terminal, acquires a data file corresponding to the e-mail text from the data file storage device, and transfers the acquired data file attached to the e-mail text A data file storage device for storing the data file. And a data file extraction means for accepting designation of the data file to be attached when the user instructs creation of an e-mail attached with the data file, and for extracting the designated data file from the data file storage means, and a data file Data that, when a data file is extracted by the extraction means, generates identification information for an e-mail with the data file as an attached file, and transmits the extracted data file to the data file storage device together with the generated identification information Accepts and accepts input of e-mail text after instructions from file sending means, e-mail text creation instruction means for instructing the user to create e-mail text with the data file as an attached file, and e-mail text creation instruction means Send the e-mail body to a data file And a mail text transmission means for transmitting to the electronic mail composition device together with the identification information generated by the stage, and the file storage device receives the data file transmitted from the electronic mail creation and transmission terminal together with the data file. A data file receiving and storing means for storing the information in association with the information, and when the identification information is received from the e-mail composition device, the data file corresponding to the identification information is extracted from the data file receiving and storing means, and the extracted data file is A data file extracting / transmitting means for transmitting to the e-mail synthesizer, the e-mail synthesizer receiving the e-mail text and the identification information transmitted from the e-mail creation / transmission terminal; The identification information received by the means is transmitted to the data file storage device. And attaching the data file obtained by the data file obtaining means to the data body obtaining means for obtaining the data file corresponding to the identification information from the data file storage device and the e-mail body received by the mail body receiving means. The present invention provides an e-mail transfer system including a new e-mail and a mail transfer means for transferring the created e-mail.

  According to the e-mail transfer system of the present invention, the substantial waiting time of the user can be shortened in the e-mail transmission with the data file attached.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows a system configuration of an electronic mail transfer system 10 according to an embodiment of the present invention. The e-mail transfer system 10 includes a mobile computer 20, a data file storage device 30, and an e-mail composition device 40. The data file storage device 30 and the electronic mail composition device 40 are connected to a communication network 11 such as the Internet or a LAN (Local Area Network). Note that the data file storage device 30 and the e-mail composition device 40 may be integrally configured as one device.

  The mobile computer 20 is, for example, a notebook computer or a PDA (Personal Digital Assistance), and is connected to a wireless communication terminal 21 such as a mobile phone or a PHS (Personal Handyphone System). The wireless communication terminal 21 communicates with a communication device connected to the communication network 11 via the base station 12 by performing wireless communication with the nearest base station 12 based on a wireless communication standard such as a mobile phone or PHS. Perform data communication.

  The mobile computer 20 has a function of transmitting and receiving electronic mail via the wireless communication terminal 21. Further, when the mobile computer 20 transmits an e-mail attached with a data file, the mobile computer 20 first transmits the data file to be attached to the data file storage device 30 via the communication network 11, and then the title, destination address, An electronic mail text including a transmission source address, a text, and the like is transmitted to the electronic mail synthesis apparatus 40 via the communication network 11.

  In the present embodiment, the mobile computer 20 performs wireless communication via the wireless communication terminal 21. However, as another example, the mobile computer 20 and the wireless communication terminal 21 may be configured integrally. The communication terminal 21 itself may have the function of the mobile computer 20.

  The data file storage device 30 receives and stores the data file transmitted from the mobile computer 20. The data file storage device 30 is, for example, an FTP (File Transfer Protocol) server or the like.

  When the e-mail synthesizing apparatus 40 receives an e-mail text from the mobile computer 20 via the communication network 11, the e-mail synthesizing apparatus 40 inquires the data file storage device 30 and acquires a data file corresponding to the e-mail text. Then, the e-mail composition device 40 newly generates an e-mail in which the data file acquired from the data file storage device 30 is attached to the e-mail body received from the mobile computer 20, and the generated e-mail is converted into the e-mail body. Transfer according to the destination included in the. The e-mail transferred by the e-mail synthesizing apparatus 40 is sent to a destination mail server (not shown) corresponding to the destination computer 13 via a mail transfer server 14 provided in an ISP (Internet Services Provider), for example. Transferred.

  FIG. 2 is a block diagram illustrating an example of a detailed functional configuration of the mobile computer 20. The mobile computer 20 includes a data file storage unit 200, a data file extraction unit 201, a mail creation instruction unit 202, a mail text transmission unit 203, and a data file transmission unit 204.

  The data file storage unit 200 stores a data file attached to an e-mail. The data file extraction unit 201 receives, from the user, information for specifying a data file to be attached to the e-mail when the user of the mobile computer 20 instructs to create an e-mail with the data file attached. The information for specifying the data file is, for example, a file name or an address in the data file storage unit 200. Then, the data file extraction unit 201 refers to the data file storage unit 200 based on information received from the user, and extracts a corresponding data file from the data file storage unit 200.

  When the data file extraction unit 201 extracts a data file, the data file transmission unit 204 generates a mail ID for identifying an electronic mail having the data file as an attached file. Then, the data file transmission unit 204 transmits the data file extracted by the data file extraction unit 201 to the data file storage device 30 via the wireless communication terminal 21 together with the generated mail ID. In the present embodiment, the data file transmission unit 204 stores an address on the communication network 11 of the data file storage device 30 in advance.

  After the data file transmission unit 204 starts transmission of the data file, the mail creation instruction unit 202 instructs the user to create an email body of an email with the data file as an attached file. The mail creation instructing unit 202 instructs the user to create an e-mail body by starting an editor or the like for creating an e-mail body after the data file transmission unit 204 starts transmission of the data file, for example. To do.

  The mail body transmission unit 203 accepts input of the e-mail body after the e-mail body creation is instructed by the mail creation instruction unit 202. Then, the mail body transmission unit 203 transmits the received electronic mail body together with the mail ID generated by the data file transmission unit 204 to the electronic mail synthesis apparatus 40 via the wireless communication terminal 21.

  In the present embodiment, the mail text transmission unit 203 stores in advance the address on the communication network 11 of the electronic mail composition device 40. In the present embodiment, the mail body transmission unit 203 transmits a mail ID together with the e-mail body by newly providing a field for describing the mail ID in, for example, a mail header.

  Here, if the data file to be attached is specified after the e-mail text is created and the e-mail with the data file attached is transmitted, in the wireless communication environment as shown in the present embodiment, When the amount of data in the data file is large, the user of the mobile computer 20 will be kept waiting for a long time until the transmission of the e-mail ends, and may feel stress.

  On the other hand, the mobile computer 20 of the present embodiment starts transmission of a data file attached to the e-mail body before the creation of the e-mail body is started. This allows the user to create an email body while the data file is being transmitted. Therefore, in the transmission of e-mail, the substantial waiting time of the user can be reduced, and the stress given to the user can be kept low.

  FIG. 3 is a block diagram illustrating an example of a detailed functional configuration of the data file storage device 30. The data file storage device 30 includes a data file reception storage unit 300 and a data file extraction / transmission unit 301. The data file reception storage unit 300 receives the data file transmitted from the mobile computer 20 and stores it in association with the mail ID received from the mobile computer 20 together with the data file.

  When a data file request including a mail ID is received from the email synthesizing apparatus 40, the data file extraction / transmission unit 301 refers to the data file reception storage unit 300 and corresponds to the mail ID included in the data file request. It is determined whether or not the data file is stored in the data file reception storage unit 300. When the data file is stored in the data file reception storage unit 300, the data file extraction / transmission unit 301 extracts the corresponding data file from the data file reception storage unit 300, and extracts the extracted data file from the communication network 11. To the e-mail composition device 40.

  On the other hand, when the data file corresponding to the mail ID included in the data file request received from the electronic mail synthesizing apparatus 40 is not stored in the data file reception storage unit 300, the data file extraction / transmission unit 301 stores the data file. An error notification indicating that it has not been sent is transmitted to the electronic mail composition apparatus 40 via the communication network 11 together with the corresponding mail ID.

  FIG. 4 is a block diagram illustrating an example of a detailed functional configuration of the e-mail composition apparatus 40. The electronic mail synthesizing apparatus 40 includes a mail text receiving unit 400, a data file acquisition unit 401, a mail transfer unit 402, and an unsent mail storage unit 403.

  The mail body receiving unit 400 receives the e-mail body and mail ID transmitted from the mobile computer 20, and sends the received mail ID together with the e-mail body to the data file acquisition unit 401. When the data file acquisition unit 401 is notified that the data file corresponding to the mail ID can be acquired from the data file storage device 30, the mail body reception unit 400 supports the mail ID together with the mail ID. The e-mail text to be sent is sent to the mail transfer unit 402.

  On the other hand, when an error notification indicating that the data file corresponding to the mail ID could not be acquired from the data file storage device 30 is notified from the data file acquisition unit 401, the mail body reception unit 400 corresponds to the mail ID. The electronic mail text is stored in the unsent mail storage unit 403. At this time, the mail body receiving unit 400 stores the electronic mail body 4033 in association with the mail ID 4030, the re-inquiry date 4031, and the re-inquiry deadline 4032 as shown in FIG.

  Here, the re-inquiry deadline 4032 is the end date and time of a period during which the data file storage unit 30 can be continuously inquired about the presence or absence of the corresponding data file via the data file acquisition unit 401. In the present embodiment, the mail body receiving unit 400 stores, for example, one day after the date and time when the e-mail body is received as the re-inquiry deadline 4032 in the mail body receiving unit 400.

  The re-inquiry date 4031 is the next date and time when the data file storage unit 30 is inquired about the presence / absence of the corresponding data file via the data file acquisition unit 401. In this embodiment, the mail body receiving unit 400 re-inquires, for example, one hour after the date and time when the error notification indicating that the data file could not be acquired from the data file storage device 30 was notified from the data file acquisition unit 401. The date / time 4031 is stored in the mail body receiver 400.

  When the mail body receiving unit 400 refers to the unsent mail storage unit 403 at a predetermined timing and detects a re-inquiry date 4031 that matches the current date and time, the mail body receiving unit 400 sets the corresponding mail ID to the unsent mail storage unit 403. By sending the extracted mail ID to the data file acquisition unit 401, the data file acquisition unit 401 is instructed to again inquire about the presence or absence of the data file corresponding to the mail ID.

  When the data file acquisition unit 401 is notified that the data file corresponding to the mail ID has been acquired from the data file storage device 30, the mail body reception unit 400, together with the mail ID, Is sent to the mail transfer unit 402. On the other hand, when the error notification is received again from the data file acquisition unit 401, the mail body receiving unit 400 displays the re-inquiry date 4031 stored in the unsent mail storage unit 403 together with the mail ID corresponding to the received error notification. Update.

  In addition, when the mail body receiving unit 400 refers to the unsent mail storage unit 403 at a predetermined timing and detects an e-mail body 4033 whose re-inquiry deadline 4032 has elapsed, it is included in the detected e-mail body. Based on the transmission source address, an error notification that the data file cannot be transferred with the received e-mail body attached is transmitted to the mobile computer 20 via the communication network 11, the base station 12, and the wireless communication terminal 21. To do.

  When the data file acquisition unit 401 receives a mail ID from the mail body reception unit 400, the data file acquisition unit 401 transmits a data file request including the mail ID to the data file storage device 30 via the communication network 11. The data file storage device 30 is inquired about the presence or absence of the data file corresponding to the ID. When the corresponding data file is stored in the data file storage device 30, the data file acquisition unit 401 acquires the data file from the data file storage device 30 and sends the acquired data file to the mail transfer unit 402. The mail body receiving unit 400 is notified that the data file corresponding to the mail ID has been acquired.

  On the other hand, when an error notification indicating that the corresponding data file is not stored in the data file storage device 30 is received from the data file storage device 30, the data file acquisition unit 401 indicates that the data file could not be acquired. An error notification is sent to the mail body receiver 400 together with the corresponding mail ID.

  The mail transfer unit 402 receives the e-mail body and mail ID from the mail body receiver 400 and receives the data file and mail ID from the data file acquisition unit 401. Then, the mail transfer unit 402 generates a new e-mail in which the data file is attached to the e-mail body and the data file corresponding to the same mail ID, and the generated e-mail is sent to the e-mail. Forward according to the destination address included in the text.

  FIG. 6 is a flowchart showing an example of the operation of the mobile computer 20. When the user gives an instruction to create an e-mail with a data file attached, the mobile computer 20 starts the operation shown in this flowchart.

  First, the data file extraction unit 201 receives information for specifying a data file to be attached from a user (S100). Then, the data file extraction unit 201 refers to the data file storage unit 200 based on the received information, extracts the corresponding data file, and sends the extracted data file to the data file transmission unit 204.

  Next, the data file transmission unit 204 generates a mail ID for identifying an electronic mail to which the data file received from the data file extraction unit 201 is attached (S101). Then, the data file transmission unit 204 starts processing to transmit the data file extracted by the data file extraction unit 201 to the data file storage device 30 via the wireless communication terminal 21 together with the mail ID generated in step 101. (S102).

  Next, the mail creation instructing unit 202 instructs the user to create an e-mail body of the e-mail with the data file transmitted in step 102 as an attached file (S103).

  Next, the mail body transmission unit 203 determines whether or not an e-mail body is input by the user (S104). If the e-mail text has not been input by the user (S104: No), the e-mail text transmission unit 203 repeats step 104 until the e-mail text is input.

  When an e-mail text is input by the user (S104: Yes), the mail text transmission unit 203 sends the input e-mail text to the e-mail via the wireless communication terminal 21 together with the mail ID generated in step 101. The process of transmitting to the synthesizing device 40 is started (S105), and the mobile computer 20 ends the process shown in this flow chart.

  FIG. 7 is a flowchart showing an example of the operation of the data file storage device 30. For example, at a predetermined timing such as power-on, the data file storage device 30 starts the operation shown in this flowchart.

  First, the data file reception storage unit 300 determines whether or not a data file has been received (S200). When the data file is received (S200: Yes), the data file reception storage unit 300 stores the received data file in association with the received mail ID together with the data file (S201), and again shown in step 200. Execute the process.

  When no data file has been received (S200: No), the data file extraction / transmission unit 301 determines whether a data file request has been received (S202). When the data file request has not been received (S202: No), the data file reception storage unit 300 executes the process shown in step 200 again.

  When the data file request is received (S202: Yes), the data file extraction / transmission unit 301 refers to the data file reception storage unit 300, and the data file corresponding to the mail ID included in the received data file request is the data file. It is determined whether or not it exists in the reception storage unit 300 (S203). When the corresponding data file exists in the data file reception storage unit 300 (S203: Yes), the data file extraction / transmission unit 301 extracts the data file from the data file reception storage unit 300, and communicates the extracted data file with the communication. The data is received and transmitted to the electronic mail composition apparatus 40 via the network 11 (S204), and the data file reception storage unit 300 executes the process shown in step 200 again.

  On the other hand, when the corresponding data file does not exist in the data file reception storage unit 300 (S203: No), the data file extraction / transmission unit 301 stores the data file corresponding to the mail ID included in the received data file request. Is sent to the electronic mail composition apparatus 40 via the communication network 11 (S205), and the data file reception storage unit 300 executes the process shown in step 200 again.

  FIG. 8 is a flowchart showing an example of the operation of the electronic mail composition apparatus 40. For example, at a predetermined timing such as when the power is turned on, the e-mail composition device 40 starts the operation shown in this flowchart.

  First, the mail body receiving unit 400 determines whether an e-mail body is received together with the mail ID (S300). When the e-mail body is received together with the e-mail ID (S300: Yes), the e-mail body receiving unit 400 sends the e-mail ID received together with the e-mail body to the data file acquisition unit 401.

  The data file acquisition unit 401 generates a data file request including the mail ID received from the mail body receiving unit 400, and transmits the generated data file request to the data file storage device 30 via the communication network 11 (S301). . Then, the data file acquisition unit 401 determines whether a data file corresponding to the data file request has been acquired (S302).

  When the data file corresponding to the data file request can be acquired from the data file storage device 30 (S302: Yes), the data file acquisition unit 401 sends the acquired data file together with the mail ID to the mail transfer unit 402 and the data file. Is notified to the mail body receiver 400 together with the mail ID. The mail body receiving unit 400 sends the e-mail body corresponding to the mail ID notified from the data file acquisition unit 401 to the mail transfer unit 402 together with the mail ID.

  The mail transfer unit 402 generates a new e-mail in which the data file received from the data file acquisition unit 401 is attached to the e-mail body received from the mail body receiving unit 400 (S303). Forwarding is performed according to the destination address included in the mail text (S304), and the mail text receiving unit 400 executes the process shown in step 300 again.

  In step 302, when the data file corresponding to the data file request cannot be acquired from the data file storage device 30 (S302: No), the data file acquisition unit 401 cannot acquire the data file from the data file storage device 30. An error notification indicating this is sent to the mail body receiver 400 together with the corresponding mail ID. Then, the mail body receiving unit 400 stores the e-mail body, the re-inquiry deadline, and the re-inquiry date and time together with the received mail ID in the data file reception storage unit 300 (S305), and the mail body receiving unit 400 again performs the step. The process shown in 300 is executed.

  In step 300, when the email body is not received together with the email ID (S 300: No), the email body receiver 400 determines whether or not an unsent email body remains in the unsent email storage unit 403. Determination is made (S306). If no unsent e-mail body remains (S306: No), the mail body receiver 400 executes the process shown in step 300 again.

  If an unsent e-mail body remains (S306: Yes), the mail body receiver 400 determines whether or not a re-inquiry date and time that matches the current date and time exists in the unsent mail storage unit 403. (S307). In the present embodiment, if the re-inquiry date and time stored in the unsent mail storage unit 403 is within a range of, for example, about 10 minutes before and after the current date and time, the e-mail body receiving unit 400 re-inquires the current date and time. It is determined that the date and time match. When the re-inquiry date and time that matches the current date and time does not exist in the unsent mail storage unit 403 (S307: No), the mail body receiving unit 400 executes the process shown in step 300 again.

  When the re-inquiry date and time that matches the current date and time exists in the unsent mail storage unit 403 (S307: Yes), the mail body receiver 400 stores the mail ID corresponding to the re-inquiry date and time that matches the current date and time as data. The file is sent to the file acquisition unit 401. The data file acquisition unit 401 generates a data file request including the mail ID received from the mail body receiving unit 400, and transmits the generated data file request to the data file storage device 30 via the communication network 11 (S308). .

  Next, the data file acquisition unit 401 determines whether a data file corresponding to the data file request has been acquired (S309). If the data file corresponding to the data file request can be acquired (S309: Yes), the mail body receiving unit 400, the data file acquiring unit 401, and the mail transfer unit 402 execute the processing shown in step 303.

  On the other hand, when the data file corresponding to the data file request cannot be acquired (S309: No), the data file acquisition unit 401 responds to an error notification indicating that the data file cannot be acquired from the data file storage device 30. Together with the mail ID to be sent to the mail body receiver 400. Then, the mail body receiving unit 400 updates the re-inquiry date and time of the mail ID corresponding to the received error notification (S310). Then, the mail body receiver 400 determines whether or not the updated re-inquiry date has exceeded the corresponding re-inquiry deadline (S311).

  If the updated re-inquiry date and time has exceeded the corresponding re-inquiry deadline (S311: Yes), the mail body receiver 400 sends a data file to the source address included in the e-mail body whose re-inquiry deadline has been exceeded. An error notification indicating that the attached electronic mail cannot be transferred is transmitted to the mobile computer 20 via the communication network 11 (S312), and the mail body receiver 400 executes the process shown in step 300 again.

  On the other hand, when the updated re-inquiry date and time does not exceed the corresponding re-inquiry deadline (S311: No), the mail body receiving unit 400 executes the process shown in step 300 again.

  As is clear from the above description, according to the electronic mail transfer system 10 of the present embodiment, the user's waiting time can be substantially shortened in the transmission of the electronic mail attached with the data file.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in embodiment mentioned above. It will be apparent to those skilled in the art that various modifications or improvements can be made to the above-described embodiment. Furthermore, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

1 is a diagram showing a system configuration of an electronic mail transfer system 10 according to an embodiment of the present invention. 2 is a block diagram illustrating an example of a detailed functional configuration of a mobile computer 20. FIG. 3 is a block diagram illustrating an example of a detailed functional configuration of a data file storage device 30. FIG. 3 is a block diagram illustrating an example of a detailed functional configuration of an electronic mail synthesizing apparatus 40. FIG. It is a figure which shows an example of the data structure stored in the unsent mail storage part 403. 4 is a flowchart showing an example of the operation of the mobile computer 20. 5 is a flowchart showing an example of the operation of the data file storage device 30. 4 is a flowchart showing an example of the operation of the e-mail composition device 40.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... E-mail transfer system, 11 ... Communication network, 12 ... Base station, 13 ... Computer, 14 ... Mail transfer server, 20 ... Mobile computer, 200 ... Data file Storage unit 201 ... Data file extraction unit 202 ... Mail creation instruction unit 203 ... Mail body transmission unit 204 ... Data file transmission unit 21 ... Wireless communication terminal 30 ... Data file storage unit, 300 ... Data file reception storage unit, 301 ... Data file extraction / transmission unit, 40 ... E-mail synthesizer, 400 ... Mail body reception unit, 401 ... Data file Acquisition unit, 402... Mail transfer unit, 403... Unsent mail storage unit, 4030... Mail ID, 4031. ... re-inquiry period, 4033 ... e-mail body

Claims (3)

An email transfer system for transferring an email with a data file attached,
An e-mail creation and transmission terminal that starts transmission of an e-mail body that is the body of the e-mail and includes the destination of the e-mail after starting transmission of the data file attached to the e-mail;
A data file storage device for receiving and storing a data file transmitted from the e-mail creating and transmitting terminal;
The e-mail body transmitted from the e-mail creation and transmission terminal is received, a data file corresponding to the e-mail body is acquired from the data file storage device, and the acquired data file is attached to the e-mail body. And an e-mail composition device for transferring
The e-mail creation and transmission terminal is
Data file storage means for storing data files;
A data file extracting means for accepting designation of a data file to be attached when the user instructs creation of an e-mail attached with a data file, and for extracting the designated data file from the data file storage means;
Data file transmission means for generating identification information of an e-mail with the data file as an attached file, and transmitting the extracted data file to the data file storage device together with the generated identification information;
An email body creation instruction means for instructing the user to create an email body with the data file as an attached file after transmission of the data file is started by the data file transmission means;
After receiving an instruction from the mail body creation instruction unit, the e-mail body is input, and the received e-mail body is transmitted to the e-mail composition device together with the identification information generated by the data file transmission unit. A text transmission means,
The file storage device
A data file receiving and storing means for storing the data file transmitted from the e-mail creating and transmitting terminal in association with the identification information received together with the data file;
Data file extraction for extracting the data file corresponding to the identification information from the data file receiving and storing means when the identification information is received from the electronic mail synthesizing apparatus, and transmitting the extracted data file to the electronic mail synthesizing apparatus Transmission means,
The e-mail composition device
A mail text receiving means for receiving an email text and identification information transmitted from the email creating and transmitting terminal;
Data file acquisition means for acquiring the data file corresponding to the identification information from the data file storage device by transmitting the identification information received by the mail body reception means to the data file storage device;
A mail transfer means for creating a new e-mail by attaching the data file acquired by the data file acquiring means to the e-mail text received by the mail text receiving means, and transferring the generated e-mail; An e-mail transfer system comprising: The e-mail transfer system according to claim 1,
The data file storage device includes:
An e-mail transfer system which is an FTP (File Transfer Protocol) server. The e-mail transfer system according to claim 1 or 2,
The e-mail creation and transmission terminal is
An electronic mail transfer system for transmitting communication data to the data file storage device and the electronic mail composition device by wireless communication.

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