JP2019114155A - Information processing device, information processing method, and program - Google Patents

Abstract

To provide a mechanism contributing to prevention of erroneous transmission of e-mail by accurately extracting an organization name of an address from text of the e-mail.SOLUTION: An information processing device of the present invention includes storage means that stores an association between an organization name acquired from text of e-mail and a transmission destination domain of the e-mail. An organization name suited to a predetermined format is extracted from the text of the e-mail, an organization name that agrees with the organization name stored in the storage means is further extracted from the text of the e-mail, the respective extracted organization names are compared to acquire a longer one of the organization names, and it is accepted whether or not the acquired organization name and the transmission destination domain of the e-mail are to be stored in association.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information processing apparatus, an information processing method, and a program.

  Erroneous transmission of e-mail may cause leakage of confidential information, loss of customer confidence, and may cause considerable damage to business operations. In particular, erroneous transmission to different organizations is likely to be a serious problem in terms of information leakage.

  In order to prevent erroneous transmission, it may be possible to mechanically verify from the information in the address book or the domain whether the destination e-mail address and the address (organization name, personal name) described in the text are a correct combination. Because it is not determined how to write the address in the text of the mail, it is important to extract the address correctly from the text of the mail.

  As a method of mechanically extracting the address from the text of the e-mail, Patent Document 1 requires the e-mail sender to write the organization name of the address in a predetermined format, or corresponds to the e-mail address of the transmission destination. It shows how to get the name of the company you want from the address book and automatically insert it at the beginning of the mail.

  Patent Document 2 searches for titles such as "like", "sama", "dono", "which", "san", and "to" from the text of the e-mail, and the words described immediately before the title are searched. A method of extracting as an addressee is shown.

JP, 2009-188671, A JP 2007-241628 A

  Among the methods disclosed in Patent Document 1, a method of obliging a mail sender to have a predetermined format is reliable as a method of acquiring an address but it is difficult to thoroughly operate it. On the other hand, as for the method of acquiring the corresponding organization name from the address book and automatically inserting it at the beginning of the mail, since the organization name is displayed in the text of the mail, it is easy for the sender to check the address itself However, since the address of the transmission destination and the address in the text always become a correct combination, the determination itself as to whether the automatically inserted address is correct or not is left to the sender.

  The method disclosed in Patent Document 2 can be operated without specifying the address format, but is a method mainly for extracting a person's name, and the method for extracting an organization name is not mentioned. It is difficult to prevent erroneous transmissions, such as when there are persons of the same sex in different organizations.

  The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a mechanism that contributes to the prevention of erroneous mail transmission by accurately extracting an organization name of an address from the text of the mail.

  The present invention is an information processing apparatus including storage means for storing an association between an organization name acquired from an e-mail text and a destination domain of the e-mail, wherein the text of the e-mail is converted into a predetermined format. First extraction means for extracting a compatible organization name, second extraction means for extracting an organization name corresponding to the organization name stored in the storage means from the text of the electronic mail, and the first extraction means Acquisition means for comparing the organization name extracted by the second extraction means with the organization name extracted by the second extraction means, acquiring the longer organization name, the acquired organization name, and the destination of the e-mail And receiving means for receiving whether or not to store the domain in association with one another.

  According to the present invention, it becomes possible to accurately extract an organization name from the text of an e-mail, which can be useful for preventing erroneous transmission of e-mail.

Diagram for explaining the functions provided by the email mistransmission prevention system A diagram showing a hardware configuration of an information processing apparatus to which an email erroneous transmission preventing system can be applied Flow chart showing destination information extraction processing Flow chart showing organization name extraction processing Flow chart showing the hold determination process A diagram showing an example of an e-mail used in the present embodiment Diagram showing transmission history and transmission control rules Diagram showing extracted destination information Figure showing an example of a pending mail list screen Figure showing an example of an email audit screen Figure showing an example of transmission confirmation, new domain addition screen

  The present invention is a system capable of learning a combination of destination and address upon transmission confirmation, and can use the system without creating detailed control rules in advance. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing the configuration of a mail erroneous transmission prevention system according to an embodiment of the present invention.

  The email erroneous transmission preventing system 100 includes an email accepting unit 101, a destination information extracting unit 102, a pending determination unit 103, an email sending unit 104, a pending email operation / system setting unit 105, a transmission history DB 110, and a pending email DB 120. And

  In the present embodiment, the erroneous mail transmission preventing system 100 is described as a server apparatus (information processing apparatus) connected communicably to the client terminal as shown in FIG. 1, but the client terminal is shown in FIG. It may have a function.

  The mail reception unit 101 receives a mail transmitted by the user of the system, and sends the mail to the destination information extraction unit 102. The user of the system can use the mail erroneous transmission prevention system 100 by setting the mail reception destination in the mail client used by the user in the mail reception unit 101.

  The destination information extraction unit 102 extracts destination information (domain, organization name, name, etc.) from the email address and the text of the email using natural language processing, and sends it to the hold determination unit 103 together with the email. Note that normalization is performed in advance if there is a difference between full-size / half-size, a difference in notation method of organization type (such as company and corporation), or multiple continuous spaces in the middle of organization name. Perform processing to remove differences due to notation. The destination information extraction process in the destination information extraction unit 102 will be described in detail later using an example.

  The hold determination unit 103 refers to the transmission history DB 110 and determines whether to hold the transmission of the mail from the combination of the transmission destination address of the mail and the transmission destination organization name. In the case of holding the mail, the mail and the reason for holding are registered in the holding mail DB 120, and in the case of not holding the mail, the mail is sent to the mail transmission unit 104. The transmission determination processing in the transmission history DB 110, the storage e-mail DB 120, and the storage determination unit 103 will be described in detail later using an example.

  The on-hold e-mail operation / system setting unit 105 provides the user of the system with the process of sending out e-mail registered in the on-hold e-mail DB 120 through the WEB browser or the like and the maintenance process of the transmission history DB 110. The operation screen provided to the user of the system by the held mail operation / system setting unit 105 will be described in detail later using an example.

  The e-mail transmission unit 104 transmits the e-mail determined to be sendable by the hold determination unit 103 and the e-mail sent by the user of the system through the hold e-mail operation / system setting unit 105 toward the e-mail destination address. .

  The transmission history DB 110 holds the number of past transmissions for each combination of domain and organization name. The number of transmissions of the combination existing in the transmission history DB 110 is automatically updated at the time of mail transmission processing in the mail transmission unit 104, and addition of a new combination is performed at the time of mail confirmation processing by the system user. The details of the transmission history DB 110 will be described in detail in destination information extraction processing later.

  The pending e-mail DB 120 is a DB for temporarily storing the e-mail determined to be on hold by the pending determination unit 103. The pending e-mail DB 120 holds the destination information extracted by the destination information extraction unit 102 in addition to the source (original data) of the e-mail. The details of the hold email DB 120 will be described in detail in the hold determination process later.

  FIG. 2 is a block diagram showing an example of a hardware configuration of an information processing apparatus applicable to the mail erroneous transmission preventing system 100 in the embodiment of the present invention.

  As shown in FIG. 2, in the information processing apparatus, a central processing unit (CPU) 201, a read only memory (ROM) 202, a random access memory (RAM) 203, a storage device 204, an input controller 205, and a system bus 200. An audio input controller 206, a video controller 207, a memory controller 208, and a communication I / F controller 209 are connected.

  The CPU 201 centrally controls the devices and controllers connected to the system bus 200.

  The ROM 202 or the storage device 204 is a control program executed by the CPU 201, such as a BIOS (Basic Input / Output System) or an OS (Operating System), a computer readable and executable program for realizing the information processing method, and various necessary items. It holds data (including data tables).

  The RAM 203 functions as a main memory, a work area, and the like of the CPU 201. The CPU 201 loads programs and the like necessary for execution of processing from the ROM 202 or the storage device 204 to the RAM 203, and implements various operations by executing the loaded programs.

  The input controller 205 controls an input from an input device such as the keyboard / touch panel 210. The input device is not limited to this, and may be a touch panel capable of detecting a position touched with a plurality of fingers, such as a mouse or a multi touch screen.

  Various instructions can be given by the user pressing (touching with a finger or the like) according to an icon, a cursor or a button displayed on the touch panel.

  This input device is used to input a destination for a communication destination that can be used by various communication devices.

  The voice input controller 206 controls an input from the microphone 211. It is possible to perform voice recognition of the voice input from the microphone 211.

  The video controller 207 controls display on an external output device such as the display 212. The display shall also include the display of a notebook computer integrated with the main unit. The external output device is not limited to the display, and may be, for example, a projector. Further, with regard to devices that can be received by the above-described touch operation, it is also possible to receive an input from the keyboard / touch panel 210.

  The video controller 207 can control a video memory (VRAM) for display control, and can use a part of the RAM 203 as a video memory area, or can separately provide a dedicated video memory. It is possible.

  In the present invention, the first video memory area used for display when the user normally operates the information processing apparatus and the display content superimposed on the display content of the first video memory area when the predetermined screen is displayed And a second video memory area used for The video memory area is not limited to two, and can be plural as long as the resource of the information processing apparatus permits.

  The memory controller 208 controls access to the external memory 213. The external memory is connected via an adapter to an external storage device (hard disk) that stores a boot program, various applications, font data, user files, editing files, various data, etc., a flexible disk (FD), or a PCMCIA card slot. Compact flash (registered trademark) memory etc. can be used.

  The communication I / F controller 209 connects and communicates with an external device via the network 214, and executes communication control processing in the network. For example, communications using TCP / IP, telephone lines such as ISDN, and 3G lines of mobile phones are possible.

  The storage device 204 is a medium for permanently storing information, and the form thereof is not limited to a storage device such as a hard disk. For example, a medium such as a solid state drive (SSD) may be used.

  Moreover, it can also be used as a temporary memory area at the time of various processes performed by the communication terminal in the present embodiment.

  Next, the mail erroneous transmission preventing process in the present embodiment will be described using the flowcharts shown in FIGS.

  The process shown in the flowcharts of FIGS. 3 to 5 is a process in which the CPU 201 of the information processing apparatus reads and executes a predetermined control program.

  First, destination information extraction processing in the destination information extraction unit 102 will be described with reference to FIGS. 3, 4, and 6 to 8. FIG. 3 is a flowchart showing an example of destination information extraction processing. Hereinafter, an example of extracting various information shown in FIG. 8 from the mail 600 shown in FIG. 6 received by the mail receiving unit 101 according to the process of FIG. 3 will be described.

  First, at step S101, the sender's email address is extracted from the email. The sender's email address is extracted from the value of From in the email header. In an environment where the envelope information can be referred to, the sender address described in the envelope may be acquired. The sender address in the mail 600 is the value “kuramitsu@EXAMPLE.JP” of From.

  In step S102, only the domain part (character string after "@") is extracted from the sender address acquired in step S101. In this system, a sender's domain is called an internal domain, and is treated separately from domains other than the internal domain (external domain). The internal domain in the mail 600 is "EXAMPLE.JP".

  In addition, even if it is different from the sender's domain, the domain assigned to the group company etc. can be treated as an internal domain, so even if it is judged as an internal domain, the domain associated beforehand good.

  Next, in step S103, a list of destination e-mail addresses is acquired. The destination address is extracted from the values of To and Cc in the mail header. Similar to the sender address, in an environment where the envelope information can be referred to, it may be acquired from the envelope information. There are four destination addresses in the e-mail 600: “otani@EXAMPLE1.NW.JP”, “nakamura@EXAMPLE1.JP”, “ito@EXAMPLE3.JP”, and “murata@EXAMPLE.JP”.

  In step S104, only the external domain is extracted from each destination address acquired in step S103. Here, the same domain removes duplication and treats it as one element. Three destination domains in the mail 600 are “EXAMPLE 1. NW. JP”, “EXAMPLE 1. JP”, and “EXAMPLE 3. JP”.

  In step S105, a list of organization names (text body organization names) included in the addressee of the text is extracted.

  FIG. 4 is a flowchart showing an example of the organization name extraction process in step S105. Hereinafter, the details of the tissue name extraction process will be described using an example.

  First, in step S201, a paragraph in which the end of the sentence ends with a subtitle (such as "", "", "", etc.) is acquired with respect to the text of the mail. From now on, the paragraph that ends with a title is called "address block". Since there are a plurality of "address block" in the text of the mail, the mail text is scanned from the beginning of the sentence and acquired in order. Here, in consideration of the convention that the address appears in the first half of the mail text, the number of lines extracted from the beginning of the mail text may be limited. There are two address blocks in the mail 600: “XYZC NETWORKS Planning Department Mr. Otani” and “XYZC (Line Feed) General Affairs Headquarters Mr. Nakamura (Line Feed) Accounting Department Ito”. The destination information extraction unit 102 executes the processing of steps S202 to S204 on each address block.

  In step S203, tissue name candidates are extracted from the address block extracted in step S201 by pattern matching. In order to simplify the description, in the present embodiment, from the beginning of a sentence to immediately before a space (including a line feed) character is extracted as a candidate for an organization name in the address block. For the address block “XYZC NETWORKS Planning Department Mr. Otani,” the candidate of the organization name acquired by the process of step S203 is “XYZC”. Also, "XYZC Marketing" is acquired for the address block "XYZC Marketing (Line feed) NAKAMURA (Line feed) Accounting Department Ito".

  In step S204, the transmission history DB 110 is referred to, and the longest match search is used to extract tissue name candidates. FIG. 7 is an example of the transmission history DB 110, and holds the number of transmissions in the past for each combination of domain and organization name. The number of transmissions of combinations existing in the transmission history DB 110 is automatically updated at the time of e-mail transmission processing in the e-mail transmission unit 104, and addition of new combinations is performed at the time of e-mail confirmation processing by the system user, which will be described later. To be done. Among the organization names included in the transmission history DB 110, there are three types of organization names that match the transmission history in the address block "XYZC NETWORKS Planning Department Mr. Otani", "XYZC", "XYZC NETWORKS", and "XYZ". The destination information extraction unit 102 extracts “XYZC NETWORKS” as an organization name candidate as an organization name having the longest matching character string (longest matching). Here, by extracting the longest match, it is possible to avoid that the wrong “XYZC” or “XYZ” is extracted as a candidate.

  On the other hand, in the address block “XYZC marketing (line feed) General affairs headquarters Nakamura (line feed) accounting department Ito)”, the organization name that matches the transmission history is two types “XYZC” and “XYZ”, and the longest “XYZC” Are extracted as candidate organization names.

  In step S205, among the tissue name candidates extracted in step S203 and step S204, one having a longer character string length is extracted as a tissue name included in the text. As a result, since the longest tissue name in the extractable range is extracted, it is avoided in the hold determination process of the subsequent process that the determination is made based on the partially mismatched tissue name.

  The candidate organization names in the address block “XYZC NETWORKS Planning Department Mr. Otani” are “XYZC” (3 letters) and “XYZC NETWORKS” (12 letters), so “XYZC NETWORKS” is extracted as an organization name.

  Similarly, the processing in steps S202 to S205 is performed on the address block “XYZC marketing (line feed) General affairs headquarters Nakamura (line feed) accounting department Ito), and“ XYZC marketing ”is extracted as an organization name.

  The destination information extraction processing in the destination information extraction unit 102 has been described above using an example. The extraction logic based on pattern matching can extract an organization name that is not present in the transmission history even once, and can be utilized on a held mail audit screen 1000 described later. On the other hand, the extraction logic based on the longest match search with reference to the transmission history can handle an organization name that is difficult to extract by the extraction method based on pattern matching, such as the extraction of an organization name including a space. By combining and using each method, it is possible to extract the name of the address organization with high accuracy from the text of the mail even in situations where it is difficult to define the address description method strictly.

  Note that in order to simplify the explanation, in step S203, the head of the sentence to the point immediately before the blank (including line feed) character is extracted as a candidate for an organization name, but the organization type ("Corporation", "credit union", "school corporation It is possible to improve extraction accuracy and cope with a more flexible format by combining methods such as extracting character strings before and after as an organization name candidate, etc.).

  Next, the hold determination process in the hold determination unit 103 will be described using FIGS. 5 and 8.

  FIG. 5 is a flowchart showing an example of the hold determination process. FIG. 8 shows destination information extracted by destination information extraction processing in the above-described example.

  First, in step S301, a list (inconsistent domain list) for managing a domain whose corresponding organization name is not included in the text of the mail is created.

  Next, in steps S302 to S304, it is determined whether each destination domain is included in the inconsistent domain list, and the inconsistent domain list is completed.

  In step S303, it is determined whether the combination of the destination domain and any of the organization names extracted by the destination information extraction process exists in the transmission history DB. For the destination domain "EXAMPLE1.NW.JP", a combination with the organization name "XYZC NETWORKS" exists in the transmission history DB. On the other hand, for the destination domain "EXAMPLE1.JP", although there is a combination of organization names "XYZC" and "XYZ communication" in the transmission history DB, the organization names "XYZC NETWORKS" and "XYZC" extracted from the text Since there is no combination of “marketing”, it is registered in the list as an inconsistent domain in step S304. Further, in the destination domain “EXAMPLE 3. JP”, since there is no combination with any organization name in the transmission history DB, it is registered in the list as an inconsistent domain in step S 304.

  Next, in step S305, it is determined whether or not there is a mismatched domain. If it exists, the determination result is put on hold in step S306, and if it does not exist, the determination result is sent out. In the mail 600, since the destination domains “EXAMPLE1.JP” and “EXAMPLE3.JP” are inconsistent domains, the determination result of the hold determination process is “hold”. The hold judgment unit 103 temporarily stores the mail judged to be "hold" in the hold mail DB 120, the destination information, and the inconsistent domain list.

  The hold determination process in the hold determination unit 103 has been described above. The above-described example represents the operation of “The hold operation is performed because the organization name corresponding to EXAMPLE1.JP and EXAMPLE3.JP is not described in the address of the text”.

  Next, the screen provided to the user of the system by the on-hold e-mail operation / system setting unit 105 and the processing in the e-mail transmission unit 104 will be described with reference to FIGS.

  FIG. 9 shows an example of the pending mail list screen 900 in the present embodiment, and the user of the system can refer to and operate the screen via the WEB browser. On the pending mail list screen 900, for each email present in the pending email DB 120, the transmission date, subject, text organization name, and destination domain are presented. Here, in the domain determined by the hold determination unit 103 to be an inconsistent domain, it is highlighted by bold letters, deficits, underlines, and the like as items requiring particular confirmation. In addition, an organization name not registered in the transmission history DB is similarly highlighted and displayed.

  The user of the system can refer to the hold reason confirmation screen of the mail by pressing the transmission date and time item on the hold mail list screen 900.

FIG. 10 shows an example of the audit screen 1000 in the present embodiment. The audit screen 1000 includes a hold reason, an e-mail content, a delete button, and a send button.
In the holding reason on the audit screen 1000, items to be confirmed such as inconsistent domain and check boxes are displayed as a list. Inconsistent domains to be displayed as pending reasons are displayed in coordination with bold letters, red letters, underlines, etc. Note that the domain displayed on the audit screen 1000 pops up the organization name with the largest number of transmissions (by clicking the organization name of the record with the largest number of transmissions among the records including the corresponding domain in the transmission history DB 110). It has a function to display.

  In the mail contents on the audit screen 1000, information such as the address of the sender / receiver, the subject, and the text is presented. In the display of each item, the text organization name and the destination domain are highlighted. In particular, an organization name not registered in the transmission history DB and an organization name in which a combination with the destination domain does not exist in the transmission history DB are emphasized and displayed. The organization name displayed here and the domain also have a function of displaying the domain with the largest number of transmissions by click operation or the organization name in a pop-up. If the organization name is not registered in the transmission history DB, or if there is no combination with the destination DB, a pop-up message is displayed.

  The delete button on the audit screen 1000 is a button for deleting the temporarily held mail without sending it. When the user of the system presses the delete button, the held mail operation / system setting unit 105 deletes the corresponding record from the held mail DB, and then presents the held mail list screen 900 to the user.

  The sending button in the audit screen 1000 is a button for shifting to a transmission confirmation screen 1100 described later, and can be pressed when all check boxes in the holding reason have been checked. When the user of the system presses the send button, the pending mail operation / system setting unit 105 presents the transmission confirmation screen 1100 to the user of the system.

  FIG. 11 shows an example of the transmission confirmation screen 1100 in the present embodiment. The transmission confirmation screen 1100 includes a new learning object list, a cancel button, and a transmission button.

  The new learning target list in the transmission confirmation screen 1100 is a combination that does not exist in the transmission history DB 110 among all combinations of the text organization name and the destination domain, and indicates whether to newly register in the transmission history table for each combination. It has a check box. The display area of each organization name is an editable form, and can be edited if there is an error in the extracted portion.

  The cancel button in the transmission confirmation screen 1100 is a button for canceling the transmission of the mail. When the user of the system presses the cancel button, the pending mail operation / system setting unit 105 presents the audit screen 1000 of the mail to the user of the system.

  The send button on the send confirmation screen 1100 is a button for sending the mail. When the user of the system presses the send button, the pending mail operation / system setting unit 105 adds the checked combination in the new learning target list to the transmission history DB 110 (the value of the number of transmissions is 0), and sends it to the mail transmission unit 104. After sending the mail, the corresponding record is deleted from the hold mail DB, and the user is presented with a hold mail list screen 900.

  The screen provided by the on-hold e-mail operation / system setting unit 105 and the process in the e-mail transmission unit 104 have been described above.

  In the above, the embodiment in which the combination of the domain and the organization name is learned has been described, but the same idea can be applied to personal mail by learning the combination of the entire email address and the addressee. Becomes possible.

  Further, a program according to the present invention is a program that causes a computer to execute the processing of FIGS. The program according to the present invention may be a program for each of the processes shown in FIGS.

  As described above, the recording medium recording the program for realizing the functions of the above-described embodiments is supplied to the system or apparatus, and the computer (or CPU or MPU) of the system or apparatus stores the program stored in the recording medium. It goes without saying that the object of the present invention can also be achieved by reading and executing.

  In this case, the program itself read out from the recording medium realizes the novel function of the present invention, and the recording medium recording the program constitutes the present invention.

  As a recording medium for supplying the program, for example, a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, DVD-ROM, magnetic tape, non-volatile memory card, ROM, EEPROM, silicon A disk etc. can be used.

  Further, by executing the program read by the computer, not only the functions of the above-described embodiment are realized, but also an operating system (OS) or the like running on the computer is actually executed based on the instructions of the program. It goes without saying that the processing is partially or entirely performed, and the processing realizes the functions of the above-described embodiments.

  Furthermore, after the program read from the recording medium is written to the memory provided to the function expansion board inserted into the computer or the function expansion unit connected to the computer, the function expansion board is read based on the instruction of the program code. It goes without saying that the case where the CPU or the like provided in the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiment are realized by the processing.

  Further, the present invention may be applied to a system constituted by a plurality of devices or to an apparatus comprising a single device. It goes without saying that the present invention can also be applied to the case where it is achieved by supplying a program to a system or apparatus. In this case, by reading a recording medium storing a program for achieving the present invention into the system or apparatus, the system or apparatus can receive the effects of the present invention.

  Further, by downloading and reading out a program for achieving the present invention from a server on a network, a database or the like by a communication program, the system or apparatus can receive the effects of the present invention. In addition, the structure which combined each embodiment mentioned above and its modification is also contained in this invention altogether.

100 Email Mistake Prevention System (Information Processing Device)

Claims (6)

An information processing apparatus comprising: storage means for storing an association between an organization name acquired from the text of an electronic mail and a transmission destination domain of the electronic mail;
First extracting means for extracting an organization name conforming to a predetermined format from the text of the electronic mail;
Second extraction means for extracting an organization name corresponding to the organization name stored in the storage means from the text of the electronic mail;
Acquisition means for comparing the tissue name extracted by the first extraction means with the tissue name extracted by the second extraction means to acquire the longer tissue name;
An information processing apparatus comprising: reception means for receiving whether or not the acquired organization name and the transmission destination domain of the e-mail are stored in association with each other.   The information processing apparatus according to claim 1, wherein the second extraction unit extracts the longest tissue name when there are a plurality of matching tissue names.   Display control means is provided for identifying and displaying the acquired organization name when the association between the acquired organization name and the destination domain of the e-mail is not stored in the storage means. The information processing apparatus according to item 1 or 2.   4. The information processing apparatus according to claim 3, wherein the display control unit identifies and displays the acquired tissue name when the acquired tissue name is not stored in the storage unit. An information processing method in an information processing apparatus, comprising: storage means for storing an association between an organization name acquired from a text of an electronic mail and a transmission destination domain of the electronic mail,
A first extraction step of extracting an organization name conforming to a predetermined format from the text of the electronic mail;
A second extraction step of extracting an organization name corresponding to the organization name stored in the storage means from the text of the electronic mail;
An acquisition step of acquiring a longer tissue name by comparing the tissue name extracted in the first extraction step with the tissue name extracted in the second extraction step;
An accepting step of accepting whether or not to store the acquired organization name and the destination domain of the electronic mail in association with each other. It is a program that can be executed in an information processing apparatus including storage means for storing an association between an organization name acquired from the text of an electronic mail and a transmission destination domain of the electronic mail,
The information processing apparatus
First extracting means for extracting an organization name conforming to a predetermined format from the text of the electronic mail;
Second extraction means for extracting an organization name corresponding to the organization name stored in the storage means from the text of the electronic mail;
Acquisition means for comparing the tissue name extracted by the first extraction means with the tissue name extracted by the second extraction means to acquire the longer tissue name;
A program characterized in that it functions as an accepting means for accepting whether or not to store the acquired organization name in association with a transmission destination domain of the electronic mail.

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