JP2013145608A - Transmission control system and method for electronic mail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an erroneous transmission confirmation technique for an electronic mail capable of effectively transmitting an electronic mail even in the case where the capacity of an attached file exceeds the allowable capacity of a transmission mail server side.SOLUTION: A transmission control system 10 for an electronic mail comprises: a set value storage section 22 for previously storing a set value for extracting a confirmation item from an electronic mail, and a user ID and a password for file distribution service; a transmission control section 14 for temporarily stopping the transmission of the electronic mail when the electronic mail is output from a mail client section 26; and a transmission confirmation processing section 16 for extracting the confirmation item from the electronic mail and displaying a transmission confirmation screen 34 including warning messages and warning icons on a display, displaying a file distribution button 92 on the confirmation screen 34 when a confirmation input that clicks the individual warning icons on the confirmation screen 34 has been performed, and transmitting electronic mail data to a file distribution server 95 through a file transmission section 18 when the file distribution button 92 is pressed.

Description

  The present invention relates to an e-mail transmission control system and method, and in particular, by determining whether or not an e-mail is appropriate before the e-mail is transmitted from a client terminal to a mail server and displaying the result on a display. The present invention relates to a technology that gives an opportunity to confirm that the transmission of an e-mail is not an error.

  Currently, the use of e-mail has become established as a means of communication between companies, and highly confidential important documents such as contracts and quotations are frequently sent and received as e-mail attachments. For this reason, prevention of information leakage due to erroneous transmission of electronic mail is recognized as an urgent issue in each company.

As a measure for reducing the erroneous transmission of the e-mail, as shown in Patent Document 1 and Non-Patent Document 1, a proxy server is installed between the employee's client terminal and the mail server, and the transmission destination is set in the proxy server. And the contents of e-mails are checked for suitability and the results are returned to the client terminal.
For example, in the service of Non-Patent Document 1, when an e-mail address (To, Cc) includes an external address, the address is highlighted on the transmission confirmation screen (dialog). , Has a function to alert the sender.
By using these existing services, employees are given an opportunity to review the contents before sending an e-mail, so that it is possible to prevent a troubled e-mail from being sent indiscriminately.
JP2007-087327 CipherCraft / Mail Internet URL: http://www.ntts.co.jp/products/ccraftmail/function.html#01 Search date: December 15, 2010

  However, this conventional erroneous transmission prevention service has a problem in that an electronic mail cannot be effectively transmitted when the capacity of the attached file exceeds the allowable amount on the transmission mail server side.

Further, in the case of the existing service, there is a problem in that the configuration of the transmission confirmation screen is insufficient and the role of “giving the sender an opportunity to confirm whether or not the transmission is incorrect” cannot be fulfilled sufficiently.
For example, as shown in FIG. 10, in the case of the transmission confirmation screen 100 disclosed in Non-Patent Document 1, the determination on the three components of the “destination”, “text”, and “attached file” of the e-mail in the same screen is performed. Since the results are displayed at once, the sender's attention is likely to be distracted, and comprehensive check boxes such as “Check all recipients” and “Check all attachments” are provided. As a result, there was a problem that the confirmation act was easily lost. In addition, since the space that can be divided into individual confirmation items is relatively narrow and limited, it has been pointed out that the frequency of scroll operations increases when serious confirmation is made.

The present invention has been devised to solve such a conventional problem, and even when the capacity of the attached file exceeds the allowable amount on the transmission mail server side, the electronic mail is effectively transmitted. The first object of the present invention is to provide an e-mail transmission control technique that can be performed.
A second object of the present invention is to provide an e-mail transmission control technique capable of presenting a confirmation screen with excellent visibility that can prevent the confirmation work from being formed.

  In order to achieve the above object, the e-mail transmission control system according to claim 1 stores a set value for preliminarily storing a set value for extracting a confirmation item from the e-mail transmitted from the client terminal. A means for temporarily stopping the transmission of the e-mail from the client terminal to the outgoing mail server, and the contents of the e-mail and the setting values stored in the setting value storage means are compared. And a means for generating a confirmation screen showing all or part of the contents of the e-mail corresponding to the existence of the necessary confirmation item or the necessary confirmation item, and displaying the confirmation screen on the display of the client terminal. When the confirmed input is made on the confirmation screen, the server that provides the file distribution service is accessed, and the email It is characterized by comprising a means for transmitting a biasing file.

  The electronic mail transmission control system according to claim 2 is based on the system of claim 1, and further, the setting value storage means downloads an electronic file to a client terminal on the receiving side via the Web. The access information (user ID, password, URL, etc.) necessary for using is stored, and the access information is used to access a server that provides the file distribution service.

  The e-mail transmission control system according to claim 3 is based on the system of claim 1 and further requires access to use a file distribution service for downloading an electronic file to a client terminal on the receiving side via the Web. The electronic mail attachment is transmitted after the user inputs information.

  The e-mail transmission control system according to claim 4 is based on the system according to claims 1 to 3, and further, the confirmation screen is an independent confirmation for at least each attached file, destination, and body that is a constituent element of the e-mail. A page is provided, and a confirmation page displayed on the front side is alternately switched by selecting a tab.

  The e-mail transmission control system according to claim 5 is based on the system of claim 4, and in addition, a warning icon is displayed for each warning message indicating the presence of an item to be confirmed on the confirmation screen. When a warning icon is selected through the input device, it is considered that the confirmed input has been made, and the warning icon disappears.

  The e-mail transmission control system according to claim 6 is based on the system of claim 5, and further, the warning icon is also displayed on a tab for switching each confirmation page. When the warning icon disappears, the warning icon on the corresponding tab also disappears.

  The e-mail transmission control system according to claim 7 is based on the system according to claims 4 to 6, and when the predetermined security label is embedded in the attached file of the e-mail, An image of the security label is displayed together with the warning message and the warning icon on the confirmation page of the attached file.

  An e-mail transmission control system according to claim 8 is premised on the system of claims 4 to 7, and further, a list of detection keywords is stored in the set value storage means, If any of the detected keywords is included, the keyword is highlighted in the confirmation page.

  An e-mail transmission control system according to claim 9 is based on the system of claims 1 to 8, and further includes a transmission history storage means for storing the address of the transmitted e-mail as transmission history information, The required confirmation item extracting means extracts, as a required confirmation item, that a destination for which no transmission history exists is specified when the address where the transmission history is not left is included in the destination column of the e-mail. It is characterized by that.

  The e-mail transmission control system according to claim 10 is based on the system according to claims 1 to 9, and further, the required item extraction means has a predetermined number or more addresses described in the e-mail address field. In this case, the fact that the number of addresses exceeds a specified value is extracted as a confirmation item.

  An e-mail transmission control system according to claim 11 is based on the system of claims 1 to 10, and further makes it possible to click a final confirmation button before accessing the server that provides the file distribution service. And a file attached to an e-mail is transmitted to the server when the final confirmation button is pressed.

  The electronic mail transmission control method according to claim 12 includes a step of preliminarily storing a set value for extracting a confirmation item from an e-mail transmitted from a client terminal in a set value storage means, and an e-mail transmitted from the client terminal. A step of temporarily stopping transmission of the e-mail to the server, a step of comparing the contents of the e-mail with each set value stored in the set value storage means, and extracting necessary confirmation items; A confirmation screen showing the existence of confirmation items or all or part of the contents of the e-mail corresponding to this confirmation item is generated and displayed on the display of the client terminal, and confirmed input is made on the confirmation screen. In such a case, access to the server that provides the file distribution service and send the attached file of the above e-mail. It is characterized in that it consists of and-up.

In the case of the e-mail transmission control system according to claims 1 to 3 and the e-mail transmission control method according to claim 12, when a confirmation operation through a confirmation screen is performed, instead of normal e-mail transmission, Since the attachment file of the e-mail is uploaded to the file distribution server that has the function of downloading the electronic file via the Web to the client terminal on the receiving side, the capacity of the attached file is the allowable amount on the sending mail server side Even if it exceeds the limit, it is possible to transmit effectively.
Recipients who know the fact that an e-mail attachment was uploaded from a sender by e-mail from a file distribution server must access the specified URL from a Web browser and download the e-mail attachment. Is possible.

In the case of the electronic mail transmission control system according to claim 4, the confirmation screen displayed on the display of the client terminal binds an independent confirmation page for each of the attached file, the destination, and the main body of the electronic mail. And a mechanism for switching a confirmation page displayed on the front by selecting a tab, so that the user can concentrate attention on each component of the e-mail. As a result of limiting the number of items to be confirmed that are displayed on the confirmation screen at a time, the space allocated to each item becomes relatively wide, and there is an advantage that visibility is improved.
In addition, it is a mechanism in which an attached file is sent for the first time when a confirmed input is made, and a mechanism that cannot comprehensively check multiple confirmation items such as “confirm all of” Therefore, it is possible to effectively prevent the confirmation work by the user from becoming a body.

  In the case of the e-mail transmission control system according to claim 5, there is a mechanism in which the confirmed input is completed and the warning icon disappears by simply clicking the warning icon corresponding to the warning message on the confirmation screen. The user can intuitively perform the e-mail confirmation work.

  In the case of the e-mail transmission control system according to claim 6, since the warning icon is also displayed on the tab for switching each confirmation page, the user needs to check the confirmation page hidden on the back. Can be recognized at a glance, and improvement in workability can be expected.

  In the case of the e-mail transmission control system according to claim 7, when a security label such as “confidential” or “internal limit” is embedded in the attached file, the corresponding security label is confirmed together with a warning message and a warning icon. Since the mechanism is displayed on the page, the user can more accurately determine the suitability of the e-mail.

  In the case of the e-mail transmission control system according to claim 8, when a preset detection keyword is included in the body of the e-mail, the system includes a mechanism for highlighting this on the confirmation page. It becomes possible to call the user's attention about the character string requiring attention.

  In the case of the e-mail transmission control system according to claim 9, since a warning message is issued when the first address is designated as a destination, the user can reconfirm an incorrect address input. It becomes.

  In the e-mail transmission control system according to claim 10, since a warning message is issued when the number of addresses equal to or greater than the threshold value is specified in the e-mail destination field, the user can It becomes possible to reconfirm the suitability.

  In the electronic mail transmission control system according to claim 11, a final confirmation button is displayed before accessing a server that provides a file distribution service, and an attachment file of an electronic mail is not displayed until the final confirmation button is pressed. Is provided, and the user is given an opportunity to reconfirm the entire e-mail, so that the user can perform confirmation work with care.

  FIG. 1 is a block diagram showing a functional configuration of an e-mail transmission control system 12 provided in the client terminal 10, and includes a transmission control unit 14, a transmission confirmation processing unit 16, a file transmission unit 18, A control item setting processing unit 20, a set value storage unit 22, and a transmission history storage unit 24 are provided.

  The client terminal 10 is a PC, and the transmission control unit 14, the transmission confirmation processing unit 16, the file transmission unit 18, and the control item setting processing unit 20 described above are executed by the PC CPU according to the OS and a dedicated application program. This is realized. The set value storage unit 22 and the transmission history storage unit 24 are provided in an external storage device of the PC.

The client terminal 10 is also provided with a mail client unit 26 realized by a general-purpose electronic mail program.
The user can create a new e-mail via the mail client unit 26 and send it to the e-mail address of the recipient.

First, after setting up an application program for realizing the e-mail transmission control system 12 in the client terminal 10, the user performs various settings for controlling the operation of the erroneous transmission confirmation process.
That is, when the user selects “control item setting” from the program menu, the control item setting processing unit 20 generates the control item setting screen 28 and displays it on the display of the client terminal 10 (not shown).

For example, the user performs the following settings through the control item setting screen 28.
(1) Necessity of warning display when inputting a large number of addresses
(2) Destination list not subject to popup
(3) Necessity of pop-up when inputting local address
(4) Necessity of forced pop-up when there is an attached file
(5) List of detection keywords
(6) Conversion list of “domain name ⇔ organization name”
(7) Language switching (Japanese, English, Chinese)
(8) Display of final confirmation button
(9) Necessity of extracting the security label set in the attached file
(10) Use or non-use of crypto flights, ID and password when using

  The setting in (1) above is to select whether or not to display a warning message when a large number of addresses are entered in the destination field (To, Cc). In addition, the number of addresses (threshold value) determined as “large” can be set.

  The setting in (2) above specifies a destination that is not displayed as a pop-up warning message by domain name or e-mail address, and can be set to "* (any number of characters)" or "? (Any one character) ) ”Can also be specified.

  Specify the setting in (3) above when local addresses (addresses after @) are considered to be addressed to the company and are not subject to pop-up warning message display.

  The setting in (4) above specifies whether or not to force a pop-up if there is an attached file even if a destination that is not set as a pop-up target in the setting of (2) or (3) above is entered. It is an item.

  The setting (5) is to input a list of keywords to be detected from the title of the attached file or the text of the body. For example, a character string such as “Estimate”, “Financial Statement”, or “Top Secret” corresponds to the detection keyword

  In the setting of (6) above, a correspondence list of domain names and organization names used in organization name conversion (details will be described later) is input.

  The setting (7) is for switching the language displayed on the pop-up and the transmission confirmation screen.

  The setting in (8) above selects whether or not to display the final confirmation button before displaying the transmission button (details will be described later).

  The setting in (9) above specifies whether or not to detect a security label such as “Top Secret” or “Restricted Person” in the attached file (details will be described later) ). It is also possible to specify the type of label to be detected.

The setting in (10) above relates to the use of “crypto flights,” which is a type of service that realizes secure delivery of files on a web basis. That is, when using the crypto flights, check “Use crypto flights” on the setting screen and input the user ID and password.
* Crypto flights: http://www.nri-secure.co.jp/service/crypto/index.html

  When the user who has completed the input of settings via the control item setting screen 28 presses the “Register” button on the screen, the control item setting processing unit 20 stores the setting data in the setting value storage unit 22.

The processing contents of the system 12 will be described below according to the flowcharts of FIGS.
First, the transmission control unit 14 constantly monitors the communication status between the mail client unit 26 and the transmission mail server 30, and when detecting that an email is transmitted from the mail client unit 26 to the transmission mail server 30, The electronic mail data is captured and temporarily prevented from being sent to the Internet 32 (S10), and a copy of the electronic mail data is passed to the transmission confirmation processing unit 16.

The transmission confirmation processing unit 16 analyzes the content of the e-mail data and determines whether it is appropriate (S12). In the determination of suitability, the transmission confirmation processing unit 16 refers to the set value stored in the set value storage unit 22.
Next, the transmission confirmation processing unit 16 generates a transmission confirmation screen reflecting the determination result and displays it on the display (S14).
4 to 7 show specific examples of the transmission confirmation screen 34, and three switching tabs of “attached file”, “destination”, and “text” are provided.

  In the case of FIG. 4, since the attached file tab 36 is selected, only the attached file confirmation page 38 is displayed in the front. The attached file confirmation page 38 includes a header area 40 and a file list area 42.

Here, three attachments are listed in the file list area 42. For the second "financial statement (June 25, 2010 edition) .xls" from the top, "!" A warning icon 44 and a popup 46 in which a warning message “Keywords are included” are added.
Since this warning display includes the “financial statement”, which is one of the detection keywords, in the file name of the attached file, the transmission confirmation processing unit 16 recognizes it as a necessary confirmation item and inserts it in the file list area 42. Is.

  In addition, a warning message “Please check the attached file./A keyword is included in the attached file name” is displayed in the header area 40 of the attached file confirmation page 38, and a warning icon “!” Is displayed. 48 is displayed. Also, a warning icon 50 of “!” Is displayed in the attached file tab 36, and it is clearly shown that there is a matter to be confirmed on the attached file confirmation page 38.

Here, when the user clicks the “financial statement (June 25, 2010 edition) .xls” in question, the application program associated with the extension of the file is activated and the attached file is displayed.
The user who checks the contents of the attached file and finds no particular problem closes the file and clicks the warning icon 44 displayed in the file list area 42.

  Upon receiving the confirmation input for the warning icon 44 (S16), the transmission confirmation processing unit 16 eliminates the warning icon 44 and displays the confirmed icon 52 of “ok” (S18). In addition, since all the warning icons in the file list area 42 are thereby deleted, the warning icon 48 in the header area 40 and the warning icon 50 in the attached file tab 36 are also replaced with “ok” confirmed icons.

On the other hand, if the user confirms the contents of the attached file and determines that there is a problem, the user clicks a cancel button 54. As a result, the e-mail data held by the transmission control unit 14 is discarded, and transmission to the transmission mail server 30 is stopped.
Thereafter, the user again creates an e-mail to which a correct file is attached on the mail client unit 26, and performs transmission processing.

  FIG. 5 shows another pattern in which there is a problem with the attached file. In the header area 40 of the attached file confirmation page 38, “Please check the attached file. / A file with a highly confidential label is displayed. Yes / This email cannot be sent "and a warning icon 48 of"! "Are displayed. Also, a warning icon 50 of “!” Is displayed on the attached file tab 36.

Three file attachments are listed in the file list area 42, and a “!” Warning icon 44 and a “confidential” security label 56 are affixed to the first “financial statement.xls”.
In addition, a warning icon 44 of “!” And a security label 56 of “internal limit” are also attached to the third “minutes.doc”.

If any security label is embedded in the attached file, the corresponding label ID is set as the property of the file, so the transmission confirmation processing unit 16 that has detected this has the security label associated with the label ID. Is inserted into the file list area 42, the security label 56 is pasted.
Incidentally, when a file with this security label set is opened with a corresponding program such as a word processor or spreadsheet, a label image such as “Top Secret” is displayed in the header portion of each page.

As a result of checking the attached file confirmation page 38, the user who has determined that there is no problem in sending clicks the attached file warning icon 44 displayed in the file list area 42.
As a result, the warning icon 44 is replaced with the confirmed icon 52 of “ok”, and at the same time, the warning icon in the header area 40 and the attachment file tab 36 disappears, and a confirmed icon of “ok” appears instead.
On the other hand, if the user determines that there is a problem, the user clicks a cancel button 54 and stops sending the e-mail.

In the case of FIG. 6, since the destination tab 58 is selected, the destination confirmation page 60 is displayed in front of the transmission confirmation screen 34.
In this case, since a large number of recipients (for example, 10 or more) are specified in the To and Cc fields, the header area 62 on the recipient confirmation page 60 displays “Please confirm recipients./To, Cc has a large number of email addresses. A warning message “Specified” and a warning icon 64 “!” Are displayed.
In addition, a warning icon 66 of “!” Is also displayed on the destination tab 58, which clearly indicates that there is a confirmation item on the page.

In the address list area 68 of the address confirmation page 60, e-mail addresses are grouped in units of domains such as “Nris.co.jp” and “Nris.dev.co.jp” and displayed in a list.
When the conversion information of “main name / organization name” is set in the setting value storage unit 22 in advance, the organization name is displayed instead of the domain name.
For example, since the conversion information of “abc-labo.com⇔BC Lab Co., Ltd.” was stored in the setting value storage unit 22, “[Cc] Goro Yamada <goro_yamada@abc-labo.com>” The e-mail address of the company is named “ABC Laboratories”.

  Further, if an e-mail address set as a destination includes a message whose past transmission history information is not left in the transmission history storage unit 24, a warning “!” Is issued for the e-mail address. An icon 69 is added, and a pop-up 70 in which a warning message “This is a destination that does not exist in the transmission history” is displayed.

  In the case of the person who sends the e-mail for the first time, there is a high possibility that there is an input error in the e-mail address, so the user's attention is drawn, but the user who confirmed that there is no problem in the address description is a warning icon When 69 is clicked, the warning icon 69 is replaced with a confirmed icon 71 of “ok”.

The user who has confirmed that there is no particular problem with the large number of destinations clicks the warning icon 64 displayed in the header area 62 and inputs confirmation.
As a result, the warning icon 64 disappears and a confirmed icon of “ok” is displayed instead. In addition, since all the warning icons in the destination confirmation page 60 disappear due to this, the warning icon 66 in the destination tab 58 also disappears, and a confirmed icon of “ok” appears instead.

On the other hand, when the user determines that there is an error in the destination, the user clicks the cancel button 54. As a result, the electronic mail data is discarded, and transmission to the transmission mail server 30 is stopped.
Thereafter, the user again creates an e-mail specifying the correct destination on the mail client unit 26 and performs transmission processing.

In the case of FIG. 7, since the body text tab 75 is selected, the body text confirmation page 76 is displayed in front of the transmission confirmation screen 34. The “text” here includes “subject (title)” in addition to “text” in a narrow sense.
First, in the header area 77 of the page, a warning message “Please check subject / body / Keyword is included in subject / body” and a warning icon 78 of “!” Are displayed. In addition, a warning icon 79 of “!” Is also displayed on the body text tab 75 to clearly indicate that there is an item to be confirmed on the page.

In the subject area 80, the subject line “About our stock price status” is displayed, but since the “stock price” portion corresponds to the detection keyword stored in the setting value storage unit 22, the font is enlarged and colored. (Red), bold, underlined character string highlighting.
In the text area 81, the text “Yamada-sama / Thank you for your support. I am Yoshida of NRI Secure./ Now, consult about confidential matters that have been a concern ...” is displayed. However, since the “confidential matter” portion corresponds to the detection keyword stored in the setting value storage unit 22, the character string emphasis display similar to the above is performed.
The character string highlighting described above is an example, and the present invention is not limited to this.

On the other hand, when the user examines the highlighted character string and confirms that there is no particular problem, the user clicks the warning icon 78 displayed in the header area 77 and performs confirmation input.
As a result, the warning icon 78 disappears and a confirmed icon of “ok” is displayed instead. At the same time, the warning icon 79 in the body text tab disappears, and a confirmed icon of “ok” appears instead.

  When a confirmation input is made for the warning icon in each confirmation page and all warning icons are changed to confirmed icons (S20 / Y), the transmission confirmation processing unit 16 displays a final confirmation button 86 as shown in FIG. Is displayed at the bottom of the transmission confirmation screen 34 (S22).

On the other hand, the user switches the tabs to perform the final check of each confirmation page, and clicks the final confirmation button 86 when determining that there is no problem throughout.
Upon receiving this final confirmation input (S24 / Y), the transmission confirmation processing unit 16 displays a transmission button 91 and a crypto flight button 92 (file distribution button) at the bottom of the transmission confirmation screen 34, as shown in FIG. (S26). At this stage, e-mail can be sent for the first time.

Here, when the user clicks the send button 91 (S28 / transmission), a transmission permission notification is output from the transmission confirmation processing unit 16 to the transmission control unit 14, and the transmission control unit 14 sends the suspended email to the transmission mail server 30. Transmit (S30).
This electronic mail α is transferred from the transmission mail server 30 to the reception mail server 93 and transmitted to the client terminal 94 of the recipient.
The transmission confirmation processing unit 16 registers the e-mail address described in the destination of the e-mail in the transmission history storage unit 24 as transmission history information (S32).

  When the user clicks the crypto flight button 92 instead of the transmission button 91 (S28 / crypto flight), a transmission request for the attached file is output from the transmission confirmation processing unit 16 to the file transmission unit 18. At this time, the file transmission unit 18 receives, from the transmission confirmation processing unit 16, the e-mail address set as the e-mail destination, the e-mail body, and the attached file. Also, the setting value storage unit 22 is referred to obtain the ID and password of the user's crypto flight.

Next, the file transmission unit 18 accesses the file distribution server 95 that provides the crypto flights service via the Internet 32, and logs in by inputting the crypto flight ID and password.
Next, the file transmission unit 18 transmits the attached file, the e-mail address (the sender's address and the recipient's address), and the text (including the subject) received from the transmission confirmation processing unit 16 to the file distribution server 95. (S34).

Upon receiving this, the file distribution server 95 stores the attached file β in a predetermined directory in the external storage device, and generates a guide e-mail γ addressed to the recipient and transmits it to the received mail server 93.
This e-mail γ describes at least a URL indicating the storage location of the attached file, the e-mail address of the sender, the subject of the e-mail described by the sender, and the body text.

When the recipient clicks the URL in the e-mail γ on the client terminal 94, the Web browser is activated and the download page transmitted from the file distribution server 95 is displayed (not shown).
Next, when the receiver clicks a “download” button provided on this download page, the file β is transmitted from the file distribution server 95 and stored in the external storage device of the client terminal 94.

  If the size of the attached file is large, sending it in the form of an e-mail may cause the transmission to be rejected due to the sending capacity limit on the sending mail server 30 side. It is desirable to have terminal 94 download.

  When the user selects transmission using a crypto flight, the transmission control unit 14 discards the stored e-mail data (S36). Even in this case, the transmission confirmation processing unit 16 stores the e-mail address designated as the e-mail destination in the transmission history storage unit 24 (S32).

If the user has not selected “use of crypto flights” on the control item setting screen 28, the crypto flight button 92 is not displayed on the transmission confirmation screen 34.
Similarly, if the user has not selected “Display final confirmation button” on the control item setting screen 28, the final confirmation button 86 is not displayed on the transmission confirmation screen 34, and all necessary confirmation items are confirmed. When the input is completed, the transmission button 91 is immediately displayed on the transmission confirmation screen 34.

  The required confirmation items in the e-mail described above are merely examples, and the transmission confirmation processing unit 16 can extract other necessary confirmation items according to the setting values stored in the setting value storage unit 22 and the pre-programmed judgment rules. Needless to say.

It is a block diagram which shows the function structure of the transmission control system of the email which concerns on this invention. It is a flowchart which shows the processing content of the said system. It is a flowchart which shows the processing content of the said system. It is a figure which shows the example of a display of the attachment confirmation page in a transmission confirmation screen. It is a figure which shows the other example of a display of the attached file confirmation page in a transmission confirmation screen. It is a figure which shows the example of a display of the destination confirmation page in a transmission confirmation screen. It is a figure which shows the example of a display of the text confirmation page in a transmission confirmation screen. It is a figure which shows the example in which the final confirmation button was displayed on the transmission confirmation screen. It is a figure which shows the example in which the transmission button and the crypto flight button were displayed on the transmission confirmation screen. It is a figure which shows the confirmation screen in the conventional transmission control system.

10 Sender's client terminal
12 E-mail transmission control system
14 Transmission control unit
16 Transmission confirmation processing part
18 File transmission section
20 Control item setting processing section
22 Set value storage
24 Transmission history storage
24 Send confirmation screen
24 Transmission history storage
26 Mail client part
28 Control item setting screen
30 Outgoing mail server
32 Internet
34 Send confirmation screen
36 Attachment tab
38 Attachment confirmation page
40 Header area
42 File list area
44 Warning icon
46 Pop-up
48 Warning icon
50 warning icons
52 Confirmed icon
54 Cancel button
56 Security label
58 Destination tab
60 Address confirmation page
62 Header area
64 Warning icon
66 Warning icon
68 Destination List Area
69 Warning icon
70 popup
71 Confirmed icon
75 Text tab
76 Text confirmation page
77 Header area
78 Warning icon
79 Warning icon
80 subject area
81 Text area
86 Final confirmation button
91 Submit button
92 Crypto button
93 Incoming mail server
94 Recipient client terminal
95 File distribution server α Email β Attachment γ Email for download guide

Claims (12)

A set value storage means for preliminarily storing a set value for extracting a confirmation item from an e-mail transmitted from the client terminal;
Means for tentatively stopping transmission of an email from a client terminal to an outgoing mail server;
A required item extraction unit that compares the contents of the e-mail with each set value stored in the set value storage unit and extracts a required item,
A means for generating a confirmation screen showing the existence of this confirmation matter or all or part of the content of the e-mail corresponding to this confirmation matter and displaying it on the display of the client terminal;
Means for accessing a server providing a file distribution service and transmitting the attached file of the e-mail when a confirmed input is made on the confirmation screen;
E-mail transmission control system.   The set value storage means stores access information necessary to use a file distribution service for downloading an electronic file to a client terminal on the receiving side via the Web, and the file distribution service is stored using the access information. The e-mail transmission control system according to claim 1, wherein a server providing the e-mail is accessed.   The attached file of the e-mail is transmitted after the user inputs access information necessary to use a file distribution service for downloading an electronic file to a client terminal on the receiving side via the Web. The e-mail transmission control system according to 1.   The confirmation screen has an independent confirmation page for each attached file, addressee, and body, which are at least components of the email, and has a mechanism in which the confirmation page displayed on the front can be switched alternately by selecting a tab. The e-mail transmission control system according to any one of claims 1 to 3, In the above confirmation screen, a warning icon is displayed for each warning message indicating the presence of items that require confirmation.
5. The e-mail transmission control according to claim 4, wherein when the warning icon is selected via an input device, it is considered that the confirmed input has been made, and the warning icon disappears. system.   The warning icon is also displayed on the tab for switching each confirmation page, and when the warning icon on each confirmation page disappears, the warning icon on the corresponding tab also disappears. The e-mail transmission control system according to claim 5.   When the specified security label is embedded in the attached file of the e-mail, the image of the security label is displayed together with the warning message and warning icon on the confirmation page of the attached file on the confirmation screen. The e-mail transmission control system according to any one of claims 4 to 6. The set value storage means stores a list of detection keywords,
The email according to any one of claims 4 to 7, wherein if any detected keyword is included in the body of the email, the keyword is highlighted in the confirmation page. Transmission control system. A transmission history storage means for storing the address of the transmitted email as transmission history information;
The required confirmation item extracting means extracts, as a required confirmation item, that a destination for which no transmission history exists is specified when the address where the transmission history is not left is included in the destination column of the e-mail. The electronic mail transmission control system according to claim 1, wherein the electronic mail transmission control system is an electronic mail transmission control system.   The required confirmation item extracting means extracts, as required confirmation items, that the number of addresses exceeds a specified value when more than a predetermined number of addresses are described in an e-mail address field. Item 10. The electronic mail transmission control system according to any one of Items 1 to 9. Before accessing the server that provides the above file distribution service, it has a means for enabling the final confirmation button to be clicked,
11. The e-mail transmission control system according to claim 1, wherein when the final confirmation button is pressed, an e-mail attachment file is transmitted to the server. Storing preset values in the preset value storage means for extracting necessary confirmation items from the email transmitted from the client terminal;
Temporarily stopping transmission of email from the client terminal to the outgoing mail server;
Comparing the contents of this e-mail with each set value stored in the set value storage means, and extracting necessary confirmation items;
A step of generating a confirmation screen showing the presence of this confirmation item or all or part of the content of the e-mail corresponding to this confirmation item, and displaying it on the display of the client terminal;
When a confirmed input is made on the confirmation screen, accessing a server that provides a file distribution service and sending the attached file of the e-mail; and
An e-mail transmission control method comprising:

Images