JP4827722B2 - E-mail transmission method and e-mail transmission apparatus - Google Patents

Description

The present invention relates to an electronic mail transmission method and an electronic mail transmission device that sends an e-mail attached with predetermined data to a plurality of communication devices.

  With the advancement of Internet technology, transmission of information by e-mail is widely performed. In addition, Internet technology is also introduced into a communication system in a company to construct an intranet, and various information is transmitted by e-mail.

  Transmission and reception of e-mails transmitted in the Internet or intranet are managed by an e-mail server. That is, an e-mail transmitted from a communication device as a transmission source is transmitted to a transmission-side e-mail server such as an SMTP (Simple Mail Transfer Protocol) server. The e-mail received by the SMTP server is transmitted to a receiving e-mail server such as a POP (Post Office Protocol) server with reference to the destination e-mail address. In the receiving e-mail server, the received e-mail is stored in an auxiliary storage device such as a hard disk, and when an e-mail transmission request is received from the destination communication device, the e-mail is transmitted to the communication device. I am doing so.

  Further, in the conventional electronic mail transmission method, it is possible to perform broadcast transmission that transmits to a communication device indicating a plurality of destinations at a time. Such transmission is executed by duplicating an e-mail for each destination and transmitting the copied e-mail to each destination. In addition, in the conventional electronic mail transmission method, data such as a moving image or a still image can be attached to an electronic mail and transmitted. Such attachment is executed by receiving an attachment request for requesting that data should be attached.

  Furthermore, in the conventional e-mail transmission method, an e-mail with data attached can be broadcast to a plurality of communication devices. For example, when a group proceeds with a software development project, group member A can attach his / her creation data to an e-mail and send it to the terminal devices of all the groups. Such broadcast transmission is frequently used because the burden of the transmission operation of the group member A can be reduced.

However, in the conventional electronic mail transmission method, when an electronic mail with data attached is broadcast, the attached data is broadcast to all destinations. For example, after the data created by the group member A is attached to an e-mail and broadcast to the terminal devices of the group members B to E, the same data is attached to another e-mail and sent to the terminal devices of all the groups. In the case of broadcast transmission, it is not possible to exclude only the terminal devices of group members B to E from the destination. Accordingly, the communication devices of the group members B to E are forced to receive the same data twice and manage the same data by the file name, file size, reception date and the like.
To avoid this burden, group member A sends another email with the same data attached to all groups except group members B to E, and then copies only the email itself. The burden of transmitting to each of the group members B to E is forced.
As described above, the conventional electronic mail system has a problem in that when performing broadcast transmission, an operation burden is imposed on the user of the transmission source or a management burden is imposed on the destination communication device.

Therefore, a communication method or a communication device has been proposed that can manually specify a destination from which data attachment should be excluded when broadcasting transmission (for example, Patent Documents 1 to 4). Further, a communication method or a communication device that transmits only the file name of the attached data has been proposed so that the attached communication device from which data attachment is excluded can be searched for in the past (for example, Patent Document 3 or 4). As a result, the transmission operation of the transmission source user is not complicated, and the management burden of the destination communication device can be reduced.
JP 2000-276418 A JP 2001-282638 A JP 2003-36233 A JP 2003-150517 A

  However, in the communication method or communication apparatus described in Patent Documents 1 to 4, the user should manually specify the destination to which data attachment should be excluded, so if there is an error in the user specification, it should be excluded Attached data is erroneously transmitted to the destination, and there is a problem that the destination communication apparatus receives the same data twice.

  In addition, in the communication method or communication device described in Patent Documents 3 and 4, since only the file name of the attached data is transmitted, the destination communication device receives a plurality of attached data with the same file name in the past. In this case, there is a problem that it is impossible to narrow down the attached data received in the past.

The present invention was made in view of such circumstances, and an object, to send the attached e-mail data to multiple destinations, attach data to some destination It is an object of the present invention to provide an e-mail transmission method and an e-mail transmission apparatus capable of transmitting only e-mail that is not received.

  Another object of the present invention includes a transmission date / time, a file name or a file size of data attached to a transmission history, and adds the transmission history to the body data of an email without attaching the data. It is an object of the present invention to provide an e-mail transmission method that enables a communication device that has received only the above to easily search and manage attached data received in the past.

In order to solve the above-mentioned problem, an electronic mail transmission method according to the present invention is an electronic mail transmission method that accepts an electronic mail transmission request attached with data and transmits the electronic mail to an SMTP server. The transmission request is received with reference to a transmission history including the identification information for identifying the attached data and the information on the destination of the e-mail, which is a history of transmission of the e-mail transmitted to the SMTP server. Data for which data attached to the e-mail is attached and transmitted in the past based on whether the identification information of the data attached to the e-mail is included in the transmission history for each e-mail destination If it is determined that the data attached to the e-mail is data transmitted in the past, the data is Send an e-mail, not with, the data to be appended to the electronic mail, when it is not determined that the data sent as an attachment to the past, and transmits the attached email data .

In addition, in the e-mail transmission method according to the present invention, the data attached to the e-mail may be stored in the past for a destination designated to be transmitted without attaching data in the e-mail transmission request. Even if it is not determined that the data is attached and transmitted, an e-mail without the data attached is transmitted .

In addition, in the e-mail transmission method according to the present invention, the data attached to the e-mail is previously sent to a destination designated to be attached and transmitted by the e-mail transmission request. even when it is determined that the appended to a transmitted data, characterized that you send the e-mail attachment the data.

The electronic mail transmission method according to the present invention, when transmitting e-mail attachments to the data, characterized that you additional information recorded in the transmission history after the mail text of the electronic mail.

Furthermore, the electronic mail transmitting apparatus according to the present invention receives an electronic mail transmission request with data attached thereto, and transmits the electronic mail to the SMTP server in the electronic mail transmission method, wherein the electronic mail is attached to the SMTP server. And a means for referring to a transmission history that includes identification information for identifying the attached data and information related to the destination of the e-mail, and an e-mail that has received the transmission request. The data attached to the e-mail is data attached and transmitted in the past based on whether the identification information of the data attached to the e-mail is included in the transmission history for each destination If it is determined that the data attached to the e-mail and the data attached to the e-mail are data attached and transmitted in the past, the data Means for transmitting an e-mail without attachment, and means for transmitting an e-mail with data attached when it is not determined that the data attached to the e-mail is data that has been attached and transmitted in the past. It is characterized by providing .

  In the present invention, by using a table in which transmission history and destination information of communication devices transmitted in the past are stored in association with each other, the destination information of the communication device that double-transmits the attached data is extracted. . Further, it is automatically determined whether or not the attached data is to be transmitted twice. If it is determined that the attached data is to be transmitted twice, only the e-mail with no data attached is automatically copied. Furthermore, an electronic mail with predetermined data attached is broadcast to a plurality of communication devices, and the copied electronic mail is transmitted to the communication device indicated by the destination information extracted from the table.

  Also, in the present invention, when it is determined that the attached data is to be transmitted twice, a transmission history including the transmission date / time, file name or file size transmitted in the past is sent to the corresponding destination instead of the attached data. Send an e-mail with the text. The destination communication device can search for specific data even when a plurality of pieces of data having the same file name have been received in the past.

  In the present invention, when broadcasting an e-mail, since it is automatically determined whether or not the attached data is to be transmitted twice, it is possible to avoid a situation in which the attached data is erroneously transmitted to a destination to be excluded. The burden of data management in the destination communication device can be reduced. Also, when sending an e-mail by broadcast, only the e-mail without data attached is automatically duplicated, so that the burden on the user's sending operation can be reduced. In addition, the data is attached and the e-mail is broadcast to a plurality of communication devices, and only the copied e-mail is transmitted to the predetermined communication device, so that double reception of the same data is eliminated, and the destination communication The burden of data management in the device can be reduced. Further, it is possible to reduce the burden of the transmission operation of the transmission source user.

  Further, according to the present invention, a destination communication device whose attachment is excluded can search and use attachment data received in the past.

  Hereinafter, an electronic mail transmission method according to the present invention, a communication device that executes the method, a computer program that causes the communication device to execute the method, and a recording medium that records the computer program are illustrated in the drawings illustrating the embodiments. This will be explained based on. FIG. 1 is a block diagram showing the entire system used in the present invention. In the present embodiment, an example using the Internet is shown, but an intranet constructed in a company may be used.

  In the figure, reference numeral 1 denotes a communication apparatus related to a transmission source. The communication device 1 corresponds to a device having an electronic mail transmission / reception function, such as a personal computer, a cellular phone, or a PDA (Personal Digital Assistants). The communication device 1 executes an e-mail transmission / reception program read from a recording medium. An e-mail transmission / reception program causes a computer to generate an e-mail, check the transmission history of data attached to the e-mail to be sent, duplicate the e-mail for each destination to be broadcast, and send no e-mail To add the transmission history. Details will be described later. The communication device 1 transmits the created electronic mail to the SMTP server 2.

  The SMTP server 2 is an e-mail server on the transmission side, and analyzes destination information specified by e-mail. The destination information includes a domain name that is an address on the Internet of the POP server 3 and a user name assigned to each destination communication device 4, 4, 4,. The SMTP server 2 transmits an electronic mail to the destination POP server 3 based on the analyzed domain name of the destination information.

  The POP server 3 is a destination (reception side) email server, and receives and stores the email. The POP server 3 notifies the received message to the destination (reception side) communication devices 4, 4, 4,... Based on the user name of the destination information indicated by the received e-mail.

  When the destination (reception side) communication device 4, 4, 4,... Receives the received message transmitted from the POP server 3, the communication device 4, 4, 4,. When the POP server 3 receives the transmission request transmitted from each communication device 4, the POP server 3 transmits the stored electronic mail to each communication device 4.

  Each communication device 4 receives the electronic mail transmitted from the POP server 3 and stores it in the hard disk.

  Next, the configuration of the communication device 1 according to the present invention will be described. FIG. 2 is a block diagram showing the configuration of the communication apparatus of the present invention, and FIG. 3 is a view showing a display example of an e-mail creation screen.

  The communication device 1 includes a communication unit 11, an external storage device 12, a RAM 13, an auxiliary storage device 14, an input interface 15, an output interface 16, a CPU 17, and a bus 10 for connecting them.

  The communication unit 11 includes a line termination unit such as a modem, or is connected to an external device having such a line termination function. The communication unit 11 is connected to the Internet via a line termination unit or the like, and transmits an electronic mail to the SMTP server 2 existing on the Internet.

  The external storage device 12 reads an e-mail transmission / reception program for executing the e-mail transmission method according to the present invention from the recording medium 120 and transmits the read program to the auxiliary storage device 14. The recording medium 120 corresponds to an optical disk or a magnetic storage type medium.

  The RAM 13 is configured by an SRAM, a buffer memory, or the like, and stores an e-mail transmission / reception program main body or data generated when the program is executed.

  The auxiliary storage device 14 corresponds to, for example, a magnetic recording type hard disk drive. The auxiliary storage device 14 stores a program read by the external storage device 12, a table 140 generated according to the program, various programs for controlling the other communication device 1, and data D to be attached to an e-mail. It is. Hereinafter, data to be attached to the e-mail is indicated as data D.

  The input interface 15 is connected to the input device 150, receives a signal output from the input device 15 as information, and transmits it to the RAM 13. The input device 15 is a device for receiving data input from a user, and corresponds to, for example, a keyboard or a mouse.

The output interface 16 is connected to the output device 160, and transmits the email creation screen, email reception screen, and data D transmitted from the RAM 13 to the output device 160. The output device 160 is a device for outputting an e-mail creation screen or the like to the user, and corresponds to, for example, a CRT, a liquid crystal monitor, or a sound speaker.

  The CPU 17 reads the e-mail transmission / reception program from the auxiliary storage device 14 to the RAM 13 and executes processing related to e-mail transmission / reception in accordance with the read e-mail transmission / reception program. Specifically, when receiving an attachment request, the CPU 17 adds a flag indicating that the attachment request has been made to the e-mail (attached data presence / absence flag setting). The CPU 17 confirms whether or not a flag is added to the e-mail to be transmitted (confirmation of presence / absence of attached data flag). The CPU 17 determines whether or not to attach the data D according to the destination information of the email to be sent (confirmation of destination priority). The CPU 17 duplicates the e-mail when sending the broadcast (mail duplication). Based on the transmission history of the table 140, the CPU 17 determines whether or not the electronic mail to be transmitted has been transmitted with the data D attached in the past (transmission history confirmation). The CPU 17 adds a transmission history to the body of the electronic mail not attached with the data D (past transmission history addition). When the electronic mail is transmitted, the CPU 17 updates the transmission history of the table 140 (transmission history update).

  Further, the CPU 17 reads various programs from the auxiliary storage device 14 to the RAM 13 and executes processing according to the read various programs. The processing procedure of the CPU performed according to the e-mail transmission / reception program will be described later.

  Note that the configuration of each communication device 4 is the same as the configuration of the communication device 1, and a description thereof will be omitted. The configurations of the SMTP server 2 and the POP server 3 are the same as the configuration of the conventional server, and the description thereof is omitted.

  Next, the e-mail creation screen 161 displayed by the output device 160 will be described. FIG. 3 is a view showing a display example of the e-mail creation screen. The e-mail creation screen 161 is a display screen based on an e-mail transmission / reception program, and is a graphical user interface for receiving e-mail information to be transmitted.

  The e-mail creation screen 161 includes a subject input field 161a, a destination input field (TO) 161b, a CC (Carbon Copy) input field 161c, a BCC (Blind Carbon Copy) input field 161d, a data designation input field 161e, and a data addition request button 161f. , A data deletion request button 161g, a data attachment request input field 161h, an attachment exclusion input field 161i, a mail text input field 161j, and a transmission request button 161k.

  The subject input field 161a is an input field for a subject to be attached to the e-mail. The destination input column 161b is a column for inputting destination information to which an electronic mail is to be transmitted.

  A CC (Carbon Copy) input field 161c and a BCC (Blind Carbon Copy) input field 161d are fields for inputting destination information to which an electronic mail is to be broadcast. Both fields accept input of one or more pieces of destination information. The destination information received in the CC (Carbon Copy) input field 161c is notified to all the communication devices that have transmitted the broadcast. The destination information received by the BCC (Blind Carbon Copy) input field 161d is made anonymous. The CPU 17 duplicates the e-mail for each destination information accepted by each input field.

  The data designation input field 161e is a field for designating data D to be attached to the e-mail. The data designation input field 161e receives the storage area address of the data D stored in the auxiliary storage device 14. The CPU 17 transmits the data D stored at the address received by the data designation input field 161e as an attachment to the e-mail.

  The data addition request button 161f is a button for accepting a request to add the data D stored at the address received by the data designation input field 161e as attached data. When the data addition request button 161f is pressed, the CPU 17 adds the data D stored at the address destination received by the data designation input field 161e as attached data.

  The data deletion request button 161g is a button for receiving a request to delete the data D stored at the address received by the data designation input field 161e from the attached data. When the data deletion request button 161g is pressed, the CPU 17 deletes the data D stored at the address destination received by the data designation input field 161e from the attached data.

  The data attachment request input field 161h corresponds to the destination input field (TO) 161b, the CC (Carbon Copy) input field 161c, and the BCC (Blind Carbon Copy) input field 161d, and is received by the data designation input field 161e. This is a column for inputting an attachment request for attaching the data D stored at the addressee to the electronic mail. When the data attachment request input field 161h accepts the attachment request, the CPU 17 adds a flag indicating that the attachment request has been made to the electronic mail. The CPU 17 transmits the data D stored at the address received by the data designation input field 161e to the destination requested to be attached as an attachment to the e-mail. For example, when the data attachment request input field 161h corresponding to the BCC (Blind Carbon Copy) input field 161d accepts an attachment request, the CPU 17 sends an e-mail to the destination information accepted by the BCC (Blind Carbon Copy) input field 161d. Data D is attached to

  The attachment exclusion input field 161i is an e-mail that does not attach data D among the destination information received by the destination input field (TO) 161b, the CC (Carbon Copy) input field 161c, and the BCC (Blind Carbon Copy) input field 161d. This is a field for inputting destination information to be transmitted. The CPU 17 does not attach the data D to the e-mail transmitted to the destination information accepted by the attachment exclusion input field 161i.

  The mail text input field 161j is a field for inputting character information that is the main body of the electronic mail. The CPU 17 treats the character information received in the mail text input field 161j as the text of the electronic mail.

  The transmission request button 161k is a button for inputting an e-mail transmission request. When the transmission request button 161k is pressed, the CPU 17 selects a subject input field 161a, a destination input field (TO) 161b, a CC (Carbon Copy) input field 161c, a BCC (Blind Carbon Copy) input field 161d, and a data designation input field 161e. The electronic mail is generated according to the information received in the data addition request button 161f, the data deletion request button 161g, the data attachment request input field 161h, the attachment exclusion input field 161i, and the mail text input field 161j. And CPU17 transmits the produced | generated e-mail according to the procedure of the e-mail transmission method of this invention.

  Next, a storage example of the table 140 used by the present invention will be described. FIG. 4 is a conceptual diagram showing a storage example of the table 140 used in the present invention.

  The table 140 is a table for storing an e-mail transmission history attached with data D, and the items are divided for each column, and one record is formed for each row. The table 140 is generated according to the e-mail transmission / reception program and stored in the auxiliary storage device 14.

  The items of the table 140 are formed with attributes such as key No, transmission date, transmission time, subject, file name, file size, and destination. The identification information of the data D of the present invention corresponds to the file name, file size, and destination in the present embodiment, and may be other information such as the ID number of the data D assigned at the time of transmission. .

  The key No is an identification number assigned to each electronic mail with the data D attached. When the electronic mail is transmitted, the CPU 17 stores the identification number counted by a counter (not shown) as a value in the field. The key No. is used as a key for associating with a record stored in a table (not shown) other than the table 140.

  The transmission date indicates the date when the electronic mail with the data D attached is transmitted. When the electronic mail is transmitted, the CPU 17 stores, in the field, a date that a timer (not shown) measures.

  The transmission time indicates the time when the electronic mail with the data D attached is transmitted. When the electronic mail is transmitted, the CPU 17 stores the time counted by a timer (not shown) as a value in the field.

  The subject indicates the subject of the transmitted e-mail. When the electronic mail is transmitted, the CPU 17 extracts data related to the subject from the transmitted electronic mail, and stores the extracted data in the field as a value. The subject corresponds to the subject accepted by the subject input field 161a.

  The file name indicates the file name of the data D attached to the transmitted electronic mail. When the electronic mail is transmitted, the CPU 17 extracts data related to the file name of the attached data D from the transmitted electronic mail, and stores the extracted data in the field as a value.

  The file size indicates the file size of the data D attached to the transmitted electronic mail. When the electronic mail is transmitted, the CPU 17 extracts data related to the file size of the attached data D from the transmitted electronic mail, and stores the extracted data in the field as a value.

  The destination indicates destination information of the communication apparatus that has transmitted the attached electronic mail. When the electronic mail is transmitted, the CPU 17 extracts destination information from the transmitted electronic mail, and stores the extracted destination information as a value in the field. The destination corresponds to the destination received in the destination input field (TO) 161b, the CC (Carbon Copy) input field 161c, or the BCC (Blind Carbon Copy) input field 161d.

  When the electronic mail with the data D attached is transmitted, the CPU 17 generates a record for each transmitted destination information, and stores a value in each field of the generated record.

  Next, the concept of the e-mail transmission method according to the present invention will be described. FIG. 5 is a conceptual diagram illustrating the e-mail transmission method of the present invention.

  The CPU 17 reads the e-mail transmission / reception program from the auxiliary storage device 14 to the RAM 13. The CPU 17 executes the following processing according to the read email transmission / reception program.

  The CPU 17 generates an e-mail attached with the data D in accordance with the information input on the e-mail creation screen 161. The CPU 17 extracts the subject of the email, the destination information, the file name of the attached data D, and the file size of the attached data D from the generated email. The CPU 17 performs the following process for each extracted destination information.

  The CPU 17 accesses the table 140, and the subject name, destination information, file name of the attached data D, or file size of the attached data D extracted from the email matches the value stored in the table 140. It is determined whether or not. If the CPU 17 determines that they do not match, the CPU 17 duplicates the email attached with the data D, and broadcasts the duplicated email to the communication device indicated by the destination information extracted from the email. The CPU 17 newly generates a record in the table 140, and in each field of the generated record, the subject of the email extracted from the email, destination information, the file name of the attached data D, and the file size of the attached data D Is stored as a value. Note that the extracted subject name and the like match the values stored in the table 140, that is, the data identification information is included in the transmission history stored in the table 140.

  On the other hand, if the CPU 17 determines that they match, it copies only the email without the data D attached, and stores the value determined to match after the mail body of the copied email And the transmission history (for example, transmission date, transmission time, file name, file size, etc.) stored in the extracted record is added as character information. The CPU 17 broadcasts the e-mail to the communication device indicated by the destination information stored in the extracted record among the destination information extracted from the e-mail. The CPU 17 newly generates a record in the table 140, and in each field of the generated record, the subject of the email extracted from the email, destination information, the file name of the attached data D, and the file size of the attached data D Is stored as a value.

  Furthermore, the concept of the e-mail transmission method according to the present invention will be described using a storage example of the table 140 shown in FIG.

Example 1.
For example, the CPU 17 determines that the subject is “about patent”, the file name of the attached data D is “tokyo.xls”, the file size of the attached data D is “11,000.000 bytes”, and the destination One of them is “test@fujitu.co.jp”, and an electronic mail attached with data D is generated. The CPU 17 extracts a subject and the like from the generated e-mail. The CPU 17 determines whether or not the extracted subject name matches the value stored in the table 140. As a result, the CPU 17 records the record No. of the table 140. It is determined that the value matches the value of 5. That is, it is determined that an e-mail attached with data D has been transmitted in the past. The CPU 17 duplicates an electronic mail not attached with the data D. The CPU 17 sends the transmission history of the attached data D transmitted in the past (transmission date “2006/04/05”, transmission time “15:20:30”, subject “patent”) after the mail body of the copied electronic mail. The file name “tokyo.xls” of the attached data D and the file size “11,000.000 bytes” of the attached data D) are added. The CPU 17 transmits the electronic mail to the communication device “test@fujitu.co.jp”.

Example 2
According to the e-mail transmission method of the present invention, an e-mail without data D attached is transmitted depending on whether or not the destination information of the e-mail to be transmitted matches a pre-stored exclusion condition. Also good. The CPU 17 generates an e-mail attached with the data D. The CPU 17 extracts the destination information “test@fujitsu.co.jp” from the generated electronic mail. The CPU 17 determines whether or not the extracted destination information matches an exclusion condition (not shown) stored in advance in the auxiliary storage device 14. If the CPU 17 determines that they match, the CPU 17 duplicates the email without the data D attached. The CPU 17 transmits the electronic mail to the communication device “test@fujitu.co.jp”. The exclusion condition corresponds to the destination information received by the attachment exclusion input field 161i. For example, when the data D to be attached is confidential, the attachment exclusion input field 161i accepts input of a domain name other than the in-house domain name.

  Next, the e-mail reception screen 162 displayed by each communication device 4 when each communication device 4 receives an e-mail without data D attached will be described. FIG. 6 is a view showing a display example of an e-mail reception screen. The e-mail reception screen 162 is a display screen included in the e-mail transmission / reception program of each communication device 4.

  The e-mail reception screen 162 displays the transmission history of the attached data transmitted in the past (the transmission date “2006/04/05”, the transmission time “15:20:30”, the subject “patent”, the attached data after the mail body. D file name “tokyo.xls” and attached data D file size “11,000.000 bytes”). As a result, the user of each communication device 4 can easily search the attached data D received and stored in the past, and can confirm the contents of the attached data D. Further, a message indicating that the data D to be attached has been transmitted in the past may be added after the transmission history. As a result, the receiver can confirm that the fact that the data D is not attached to the received electronic mail is not due to a transmission accident.

  Next, the procedure of the e-mail transmission process in the communication apparatus 1 will be described. FIG. 7 is a flowchart showing the procedure of the transmission process.

  The CPU 17 of the communication device 1 generates an e-mail attached with the data D in accordance with the information input on the e-mail creation screen 161 (S101). The CPU 17 extracts the subject of the email, the destination information, the file name of the attached data D, and the file size of the attached data D from the generated email (S102). The following processing is executed for each extracted destination.

  The CPU 17 determines whether or not the generated e-mail has a flag indicating that an attachment request has been made (S103). If it is determined that there is no such flag (NO in S103), the data D is not attached. The electronic mail is duplicated (S104). That is, no attachment request is made to the corresponding destination.

  On the other hand, if it is determined that the flag is present (YES in S103), the CPU 17 determines whether or not the extracted destination information is an exclusion target that matches the exclusion condition stored in advance (S105). If it is determined to be the target (YES in S105), the electronic mail is copied without attaching the data D (S104). That is, an attachment exclusion request is made for the corresponding destination.

  On the other hand, if the CPU 17 determines that it is not an exclusion target (NO in S105), it determines whether or not the extracted subject name matches the value of the transmission history stored in the table 140 (S106) and does not match. (S106: NO), the electronic mail with the data D attached is copied (S107). That is, the data to be attached has not been transmitted to the corresponding destination in the past.

  On the other hand, if the CPU 17 determines that the value matches the value of the transmission history (YES in S106), the CPU 17 duplicates the email without attaching the data D (S108). The CPU 17 adds a transmission history after the mail body of the copied electronic mail (S109). That is, the data to be attached has been transmitted to the corresponding destination in the past.

  The CPU 17 updates the transmission history stored in the table 140 (S110), transmits an e-mail to the corresponding destination (S111), and ends the process.

  In the present embodiment, the auxiliary storage device 14 stores the table 140 in which the transmission history is stored. However, the table is not limited to this, and the table in which the addresses to be excluded from which data attachment should be excluded is stored. May be stored. In such a case, the table association may be performed with the key No. of the table 140.

It is a block diagram which shows the whole system used by this invention. It is a block diagram which shows the structure of the communication apparatus of this invention. It is a figure which shows the example of a display of an email preparation screen. It is a conceptual diagram which shows the example of storage of the table used by this invention. It is a conceptual diagram explaining the e-mail transmission method of this invention. It is a figure which shows the example of a display of an email receiving screen. It is a flowchart which shows the procedure of a transmission process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Communication apparatus 120 Recording medium 140 Table 2 SMTP server 3 POP server 4 Communication apparatus

Claims (5)

In an e-mail transmission method for accepting an e-mail transmission request with data attached thereto and transmitting the e-mail to an SMTP server,
Refers to a transmission history that is the transmission history of the email sent to the SMTP server with the data attached, and includes identification information identifying the attached data and information about the destination of the email,
Data attached to the e-mail is attached in the past based on whether or not identification information of the data attached to the e-mail is included in the transmission history for each destination of the e-mail that has received the transmission request. To determine whether the data was sent
If it is determined that the data attached to the e-mail is data that has been sent in the past, send an e-mail with no data attached;
An e-mail transmission method comprising: transmitting e-mail attached with data when it is not determined that the data attached to the e-mail is data transmitted with attachment in the past . It is determined that the data attached to the e-mail is data that has been attached and transmitted in the past for a destination designated to be sent without attaching data in the e-mail transmission request. The e-mail transmission method according to claim 1 , wherein even if the e-mail is not sent, an e-mail without the data attached is transmitted . For a destination designated to be attached and transmitted by the transmission request of the e-mail, it is determined that the data attached to the e-mail is data that has been attached and transmitted in the past. 2. The e-mail transmission method according to claim 1, wherein an e-mail attached with the data is transmitted even if the data is attached. 2. The method according to claim 1, wherein when the e-mail attached with the data is transmitted, the information recorded in the transmission history is added after the mail body of the e-mail. In an e-mail transmission method for accepting an e-mail transmission request with data attached thereto and transmitting the e-mail to an SMTP server,
Means for referring to a transmission history that is the history of transmission of an e-mail sent to the SMTP server with data attached, and that includes identification information for identifying the attached data and information related to the destination of the e-mail When,
Data attached to the e-mail is attached in the past based on whether or not identification information of the data attached to the e-mail is included in the transmission history for each destination of the e-mail that has received the transmission request. Means for determining whether or not the data has been transmitted,
Means for transmitting an e-mail without attaching data when it is determined that the data attached to the e-mail is data that has been attached and transmitted in the past;
Means for transmitting an e-mail attached with data when it is not determined that the data attached to the e-mail is data transmitted in the past;
An electronic mail transmitting device comprising:

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