JP2006133879A - Mail terminal and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent access to any harmful site due to operating error and to prevent minors from accessing harmful sites. <P>SOLUTION: A mail terminal includes a personal information determining means 306 for determining whether the owner of the mail terminal is a minor according to his or her birth of date registered in a personal information recording part 313 for storing the owners' personal information; an ID number registering means 305 for registering an ID number when the owner is determined to be an adult; a harmful word information recording part 310 for recording information that specifies harmful mail; a harmful information detecting means 309 for determining whether or not harmful information is contained in the text or the mail title of a return mail to the mail received; a display means 303 for displaying a warning message indicating that the return mail is determined to contain harmful information; an input means 302 for requesting the input of an ID number and for inputting the ID number; and a communication means 301 for sending the return mail if the ID number input matches the ID number registered. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a communication terminal having a mail function, and more particularly to a mail terminal having a function of restricting transmission of unwanted mail from a harmful site and a function of restricting connection to a harmful site.

Currently, e-mails are sent and received on mobile phones and personal computers, but there are spam mails that can be sent without permission for business purposes. Some telephone companies are charged only for incoming spam, which is a problem.
In addition, there are unwanted e-mails that request connection from harmful sites to harmful sites and subscriptions to harmful site services at random, and accepting unintended harmful site services by replying those junk emails due to misoperation. There is a problem that will happen.
Recently, mobile phone and computer users are becoming younger, and similar spam is being sent to minor users. As a result, minors can easily connect to harmful sites. As a result of subscribing to harmful sites, it is one of the factors that involve minors in crimes.

Therefore, currently, measures are taken to reject incoming spam mails as described above. As a method for rejecting incoming calls, a method has been used in which each telephone company or provider's spam mail countermeasure sites are accessed and a mail address for rejecting incoming calls is registered and not sent.
However, in such a setting method for rejecting incoming calls, the user must store or store the junk mail address, open a predetermined site, and enter the junk mail address to each telephone company, etc. It took a lot of time to register call rejection.
In addition, even if the incoming call rejection is set, the spam mail destination can be sent as many times as possible by changing the spam mail address a little, and each time the user sends the spam mail address to the telephone company, etc. It was difficult to completely block spam mails sent with slightly different email addresses.
Therefore, Patent Document 1 proposes a method for blocking spam mail by using a mobile phone or a personal computer address book that receives mail as a method for judging spam mail. Specifically, it is determined whether or not the address of the received mail is registered in the address book, and the mail from the address not registered in the address book is determined as spam mail and the incoming call is rejected.
JP 2003-196217 A

However, in reality, not all emails are registered in the address book, and if a mail arrives from a friend who is not registered in the address book, the incoming call will be rejected. It was necessary to register all e-mail addresses in the address book, which was very troublesome.
Moreover, the problem that minors can easily receive mail from a harmful site by intentionally registering the address of the harmful site in the address book has not been solved.

  Therefore, the object of the present invention is not to reject incoming mail, but when sending incoming mail or when trying to connect to a site registered in the incoming mail, filtering is performed and harmful sites can be mistakenly operated. Or providing a mail terminal with a function to prevent minors from connecting to harmful sites.

  In order to solve the conventional problem, the mail terminal of the invention according to claim 1 is a mail terminal having a telephone directory function in which an individual mail address is registered, and the personal information of the owner of the mail terminal A personal information recording unit that stores the personal information, a personal information determination unit that determines whether the owner is a minor from the date of birth registered in the personal information recording unit, and a determination result of the personal information determination unit, When the owner is determined to be an adult, a personal identification number registration means for registering a personal identification number, a harmful word information recording unit for registering information for identifying harmful mail to be transmitted to or connected to a harmful site, and a reply to the received mail Harmful information detecting means for determining whether or not a keyword registered in the harmful word information recording unit is included in the body of the mail or the mail title; harmful to the reply mail When it is determined that the information is included, a display means for displaying a warning message to that effect, an input means for requesting the input of a personal identification number and inputting the personal identification number, and the inputted personal identification number are registered. A communication means is provided for transmitting the reply mail if it matches the personal identification number.

  The invention according to claim 2 is the invention according to claim 1, wherein the determination target of the harmful information detecting means further includes a transmission mail such as a newly created mail, and it is determined that the newly created mail includes harmful information. If there is a display means for displaying a warning message to that effect, an input means for requesting the input of a personal identification number, and an input of the personal identification number, and the newly created if the inputted personal identification number matches the registered personal identification number. A communication means for transmitting mail is provided.

  The invention according to claim 3 is the invention according to claim 2, wherein the harmful information detection means is further registered in a telephone directory information recording unit in which a transmission address of the transmission mail is registered with a personal mail address or the like. And determining means for determining that the transmission mail contains harmful information when the transmission address is not registered in the telephone directory information recording unit.

  The invention according to claim 4 is the main contractor information record for storing information on the main contractor of the mail terminal in place of the password registration means and the input means in the invention of claim 2 or 3. And communication means for transmitting the contents of the transmitted mail to the mail address registered in the main contractor information recording section when the owner is determined to be a minor as a result of the determination by the personal information determining means. It is characterized by having.

  Further, in the invention according to claim 5, in the invention according to claim 4, the communication means displays that the transmission mail cannot be transmitted when an email address is not registered in the main contractor information recording unit, The transmission is rejected.

  Further, the invention according to claim 6 is the safety according to claim 2, in which information for identifying a mail to be transmitted to or connected to a safe site is registered in place of the harmful word information recording unit and the harmful information detecting means. A word information recording unit, and a safety information detecting unit for determining whether or not a keyword registered in the safety word information recording unit is included in a mail body or a mail title to be transmitted. When it is determined that the safety information is included in the title, transmission of the outgoing mail is permitted.

  The invention according to claim 7 is the invention according to claim 6, wherein the safety information detecting means is further registered in a telephone directory information recording unit in which a transmission address of a transmission mail is registered with a personal mail address or the like. If the transmission address is registered in the telephone directory information recording unit, the transmission mail includes a determination unit that determines that the transmission mail includes safety information.

  Further, the mail program of the invention according to claim 8 is a mail program used in a mail terminal having a telephone book function in which an individual mail address is registered, and stores personal information of the owner of the mail terminal. From the date of birth registered in the personal information recording part, when the owner is determined to be an adult, the personal information determination step for determining whether the owner is a minor, and the determination result of the personal information determination step, when the owner is determined to be an adult A password registration step for registering a password, a harmful word information recording step for registering information for identifying harmful emails to be transmitted to or connected to a harmful site, and the body or mail title of a reply email to the received email. A harmful information detection step for determining whether or not a keyword registered in the harmful word information is included; When it is determined that the information is included, a display step for displaying a warning message to that effect, an input step for requesting the input of a personal identification number and inputting the personal identification number, and the inputted personal identification number are registered. A communication step of transmitting the reply mail if it matches the personal identification number is provided.

  The invention according to claim 9 is the invention according to claim 8, wherein the determination target of the harmful information detection step further includes a transmission mail such as a newly created mail, and it is determined that the newly created mail includes harmful information. If there is a display step for displaying a warning message to that effect, an input step for requesting the input of a personal identification number and an input of the personal identification number, and if the input personal identification number matches the registered personal identification number, the newly created A communication step of transmitting mail is provided.

  The invention according to claim 10 is the invention according to claim 9, wherein in the harmful information detection step, the transmission address of the transmission mail is further registered in a telephone directory information recording unit in which a personal mail address is registered. It is determined whether the transmission mail includes harmful information when the transmission address is not registered in the telephone directory information recording unit.

  The invention according to claim 11 is the main contractor information record for storing information on the main contractor of the mail terminal in place of the password registration step and the input step in the invention of claim 9 or 10. And a communication step of transmitting the content of the transmitted mail to the mail address registered in the main contractor information when the owner is determined to be a minor as a result of the personal information determination step. It is characterized by that.

  According to the present invention, when a spam mail requesting connection to a harmful site is returned, a warning message is displayed before connecting to the harmful site for adults, and connection due to an erroneous operation is prevented for minors. You cannot connect to harmful sites because you cannot enter your PIN.

  Further, according to the present invention, it is possible to prevent a minor from connecting to a harmful site by creating a new mail.

  In addition, according to the present invention, even when incoming mail or newly created mail is mail that connects to a harmful site or not, even if filtering is incomplete, a mobile phone user can Even if the outgoing mail is determined to be a connection mail to a harmful site, the contents of the outgoing mail and the link destination information to be connected are set as the primary contractor (usually, the guardian is set if the user is a minor) ) Can also be used to compensate for the omission of filtering.

(First embodiment)
FIG. 1 is a schematic diagram showing an external configuration of the mobile terminal device 20 according to the first embodiment of the present invention. In FIG. 1, the mobile terminal device 20 is illustratively a device that allows the user 10 to make a voice call. A typical example of such a portable terminal device 20 includes an antenna 21, a display 22, a speaker 23, and a button group 24.
The antenna 21 receives an electric signal propagating through the space or sends an electric signal into the space.
The display 22 displays an image on the screen.
The speaker 23 mainly outputs the contents spoken by the other party of the voice call of the user 10 by voice.
The button group 24 includes a number of buttons that are operated by the hand of the user 10.

FIG. 2 is a block diagram showing a hardware configuration of the mobile terminal device 20 shown in FIG. For reference, FIG. 2 also shows the components 21 to 24 shown in FIG. 2, in addition to the above-described configurations 21 to 24, the mobile terminal device 20 includes a ROM 202, a RAM 203, a processor (CPU) 201, a wireless communication unit 206 that is a peripheral circuit of the antenna 21, and a periphery of the display 22. A display unit 205 that is a circuit, an audio output unit 204 that is a peripheral circuit of the speaker 23, and a button input unit 207 that is a peripheral circuit of the button group 24 are provided.
The ROM 202 is a memory capable of reading at least data stored therein, and stores at least a voice call program, a mailer, and a browser. The voice call program is an application program in which processing related to voice call is described. The mailer is an application in which processing related to electronic mail is described. The browser is an application that realizes access to WWW (World Wide Web).
The RAM 203 is a non-volatile rewritable memory, and is sent mail information 600, telephone directory information 700, personal information 800, harmful word information 1000, received mail information 1300, main contractor information 1700, edited by the processor 201, The safe word information 2200 is stored.

  FIG. 3 is a block diagram illustrating a configuration example of the mobile terminal device 20. The integrated circuit shown in FIG. 3 includes a communication unit 301, an input unit 302, a display unit 303, a personal identification number recording unit 304, a personal identification number registration / comparison unit 305, a harmful information access control unit 306, and a safety information detection. Means 307, safety word information recording unit 308, harmful information detection unit 309, harmful word information recording unit 310, telephone directory information recording unit 311, primary contractor information recording unit 312, personal information recording unit 313, , A mail information acquisition unit 314, a received mail information recording unit 315, and a transmitted mail information recording unit 316.

The communication unit 301 transmits mail or accesses the WWW.
The input unit 302 notifies the harmful information access control unit 306 of the button input from the user 10.
The display unit 303 displays a dialog or the like on the display 22.
The personal identification number recording unit 304 records a personal identification number for accessing harmful information.
The password registration / comparison means 305 registers the password specified by the user 10 and compares the password entered by the user 10 from the input means 302.
The harmful information access control means 306 controls access to harmful information.
The safety information detection unit 307 detects whether there is a word recorded in the safety word information recording unit 308.
The safe word information recording unit 308 records the safe word information data 2200 designated by the user 10 or the like.
The harmful information detection unit 309 detects whether there is a word recorded in the harmful word information recording unit 310.
The harmful word information recording unit 310 records the harmful word information data 1000 designated by the user 10 or the like.
The phone book information recording unit 311 records the phone book information 700 specified by the user 10.
The main contractor information recording unit 312 records the main contractor information 1700 of the mobile terminal 20.
The personal information recording unit 313 records personal information 800 of the user 10 who is a user of the mobile terminal.
The mail information acquisition unit 314 acquires received mail and transmitted mail.
The received mail information recording unit 315 records the mail received by the user 10 in the received mail information 1300.
The transmission mail information recording unit 316 records the mail transmitted by the user 10 in the transmission mail information 600.

Next, with reference to FIGS. 4 to 9, an example in which personal information is referred when a reply is made to an address not registered in the telephone directory will be shown.
When a reply menu is selected on the received mail screen 401 (screen 402), a reply mail is created (screen 403), and a send button is pressed, the input means 302 detects mail transmission (S501), and harmful information access control means. In step 306, the transmission mail information 613 is acquired from the mail information acquisition unit 314 from the transmission mail information recording unit 316.
The harmful information detection unit 309 compares the transmitted mail information 613 with the phone book information 700 acquired from the phone book information recording unit 311 (S502). If it is registered in the telephone directory, the harmful information access control means 306 transmits an email via the communication means 301 (S503).
If it is not registered in the telephone book, the harmful information access control means 306 acquires the personal information 800 from the personal information recording unit 313 (S504). The harmful information access control means 306, which is a personal information determination means, determines from the personal information 800 whether or not the user 10 is a minor (S505). If it is not a minor, a message screen 404 is displayed on the display unit 303 to notify that a mail is transmitted to a partner who may be a sender of harmful information (S506). When the user 10 is a minor, an e-mail is transmitted to a partner who may be a sender of harmful information, so that a screen 904 for inputting a password of the main contractor is displayed on the display unit 303 so that it cannot be easily transmitted. Are displayed (S507).

  As described above, when an e-mail is sent to a partner who may be a sender of harmful information, if it is an adult, a message that calls attention is displayed to prevent transmission due to an erroneous operation of the user 10. it can. Moreover, since it cannot transmit easily if it is a minor, it can prevent expanding the damage of harmful information by the user's 10 misjudgment.

Next, with reference to FIG. 10 to FIG. 14, an example in which a URL in which a word registered in the harmful word information 1000 stored in the mobile terminal 20 exists is shown.
When the URL link in the received mail screen 1101 is selected, the input unit 302 detects that the URL link is pressed (S1201), and the harmful information access control unit 306 receives the received mail information from the received mail information recording unit 315 from the mail information acquisition unit 314. 1312 is acquired.
The harmful information access control means 306 acquires the URL character string in the mail text from the received mail information 1312 (S1202). The harmful information detection unit 309 compares the URL acquired from the received mail information 1312 with the harmful word information 1000 acquired from the harmful word information recording unit 310 (S1203). When the harmful word information 1000 does not exist in the URL of the received mail information 1312, the link destination of the selected URL is displayed on the display unit 303 (S1204).
When the harmful word information 1000 exists in the URL of the received mail information 1312, the harmful information access control unit 306 acquires the personal information 800 from the personal information recording unit 313 (S1205). The harmful information access control means 306, which is a personal information determination means, determines from the personal information 800 whether or not the user 10 is a minor (S1206). If it is not a minor, a message screen 1102 notifying that the link destination of the URL may be harmful information is displayed on the display means 303 (S1207). When the user 10 is a minor, since the link destination of the URL may be harmful information, a screen 1402 for inputting the principal contractor's personal identification number is displayed on the display unit 303 so that it cannot be easily displayed ( S1208).

As described above, when there is a possibility that the link destination of the URL is harmful information, if it is an adult, it is possible to prevent URL connection due to an erroneous operation of the user 10 by calling attention. Moreover, since it cannot display easily if it is a minor, it can prevent access to harmful information by the judgment mistake of the user 10.
In this embodiment, an example in which harmful word information is present in the URL link is shown. However, if a harmful word exists in the mail title or text in a newly created mail or a reply mail, a warning message that informs that is an adult. Is displayed, and a screen for entering a personal identification number is displayed so that transmission is not easy if it is a minor, and transmission is possible only when the personal identification number matches.

Next, with reference to FIG. 15 to FIG. 17, there will be shown an example in which a mail is returned without inputting a personal identification number when a minor replies to an address not registered in the phone book.
When a reply button is pressed on the reply mail screen 1501, the input unit 302 detects mail transmission (S 1601), and the harmful information access control unit 306 sends the sent mail from the mail information acquisition unit 314 to the sent mail information recording unit 316. Information 613 is acquired.
The harmful information detection unit 309 compares the transmitted mail information 613 with the phone book information 700 acquired from the phone book information recording unit 311 (S1602). If it is registered in the telephone directory, the harmful information access control means 306 transmits an email via the communication means 301 (S1609). If it is not registered in the telephone directory, the harmful information access control means 306 acquires the personal information 800 from the personal information recording unit 313 (S1603).
The harmful information access control means 306 as personal information determination means determines from the personal information 800 whether or not the user 10 is a minor (S1604). If it is not a minor, a message notifying that a mail is to be transmitted to a partner who may be a sender of harmful information is displayed on the display means 303 (S1605). If the user 10 is a minor, a screen 1502 for confirming whether or not to continue the transmission process is displayed on the display means 303 to inquire about the judgment of the user 10 (S1606).
If the transmission process is not continued, the transmission process is interrupted. When the transmission process is continued, a confirmation screen 1503 for notifying the main contractor that a mail is to be transmitted to a person who is not registered in the telephone directory is displayed on the display means 303 and the user 10 is asked to determine (S1607). If the user 10 does not press the OK button, the transmission process is interrupted. When the user 10 presses the OK button, the harmful information access control unit 306 acquires the main contractor information 1700 from the main contractor information recording unit 312 and notifies the main contractor of transmission information via the communication unit 301. (S1608). Thereafter, an email is transmitted via the communication means 301 (S1609).

  As described above, even minors who are not registered in the phone book can send mail without entering a PIN by sending transmission information to the primary contractor. Is possible. As a result, it is possible to send an e-mail to a friend whose address has been changed without requiring the input of the principal contractor's personal identification number.

(Second Embodiment)
Next, with reference to FIG. 18 and FIG. 19, an example in the case where a reply is made to an address not registered in the telephone directory is shown.
When a reply mail for the received mail screen 1801 is created (screen 1802) and the send button is pressed, the input means 302 detects the mail transmission (S1901), and the harmful information access control means 306 sends the sent mail from the mail information acquisition means 314. The transmission mail information 613 is acquired from the information recording unit 316. The harmful information detection unit 309 compares the transmitted mail information 613 with the phone book information 700 acquired from the phone book information recording unit 311 (S1902).
If it is registered in the telephone directory, the harmful information access control means 306 transmits an email via the communication means 301 (S1903). If it is not registered in the telephone directory, a message screen 1803 notifying that a mail is to be transmitted to a partner who may be a sender of harmful information is displayed on the display means 303 (S1904). When Yes is selected for the message screen 1803, a screen 1804 for inputting a personal identification number is displayed on the display means 303 (S1905). After the password registration / comparison unit 305 determines that the password has been correctly input, the mail is transmitted via the communication unit 301.

(Third embodiment)
Next, with reference to FIGS. 20 to 22, an example in the case where a safety word exists when a reply is made to an address not registered in the telephone directory will be shown.
When a reply menu is selected on the received mail screen 2001 (screen 2002), a reply mail is created (screen 2003), and the send button is pressed, the input unit 302 detects mail transmission (S2101). The harmful information access control unit 306 acquires the transmission mail information 610 from the transmission mail information recording unit 316 from the mail information acquisition unit 314.
The harmful information detection unit 309 compares the transmitted mail information 610 with the phone book information 700 acquired from the phone book information recording unit 311 (S2102). If it is registered in the telephone book, the harmful information access control means 306 transmits a mail via the communication means 301 (S2104). When not registered in the telephone book, the harmful information access control unit 306 acquires the received mail information 1310 received from the mail information acquisition unit 314 from the received mail information recording unit 315 from the address of the mail information 610.
The safety information detection unit 307 compares the received mail information 1310 with the safety word information 2200 acquired from the safety word information recording unit 308 (S2103). When the safe word information 2200 exists in the received mail information 1310, the mail is transmitted via the communication unit 301 (S2104). If it does not exist, a message screen 1803 notifying that a mail is to be transmitted to a partner who may be a sender of harmful information is displayed on the display means 303 (S2105). When Yes is selected for the message screen 1803, a screen 1804 for inputting a personal identification number is displayed on the display means 303 (S2106). After the password registration / comparison unit 305 determines that the password has been correctly input, the mail is transmitted via the communication unit 301.

  As described above, even if the other party is not registered in the phone book, if there is a word registered in the safety word information recording unit 308, it is not necessary to input a personal identification number and send an email. Can do.

  Although the present invention has been described in detail, the above description is in all respects illustrative and not restrictive. It will be appreciated that many other modifications and variations are possible without departing from the scope of the invention.

  The mail terminal of the present invention has an effect of preventing connection to a harmful site, especially for minors who send and receive mail on a communication terminal such as a mobile phone or a personal computer. It is rich in nature and is useful for communication terminals with many mail functions.

It is a schematic diagram which illustrates the external structure of the portable terminal device which concerns on the 1st Embodiment of this invention. It is a block diagram which illustrates the hardware constitutions of the portable terminal device shown in FIG. It is a software block diagram of the portable terminal provided with the access restriction function to a harmful site. It is a schematic diagram which shows the screen transition until a message dialog is displayed at the time of reply to the other party who is not registered in the telephone directory. It is a flowchart which illustrates the process sequence at the time of the reply to the other party who has not registered the telephone directory. It is a schematic diagram which illustrates the data structure of transmission mail information. It is a schematic diagram which illustrates the data structure of telephone directory information. It is a schematic diagram which illustrates the data structure of personal information. It is a schematic diagram which shows screen transition until it displays a PIN code input dialog at the time of reply to the other party who is not registered in the telephone book. It is a schematic diagram which illustrates a harmful Word information data structure. It is a schematic diagram which shows the screen transition until a message dialog is displayed at the time of selecting the URL link where harmful Word exists. It is a flowchart which illustrates the process sequence at the time of URL link selection in which harmful Word exists. It is a schematic diagram which illustrates the data structure of received mail information. It is a schematic diagram which shows a screen transition until a PIN code input dialog is displayed when a URL link where a harmful word exists is selected. It is a schematic diagram which shows a screen transition until it avoids the access restriction of the reply to a telephone directory unregistered person. It is a flowchart which illustrates the process sequence which avoids the access restriction of the reply to a telephone directory unregistered person. It is a schematic diagram which illustrates the data structure of main contractor information. It is a schematic diagram which shows the screen transition until it displays a message dialog and a PIN code input dialog at the time of a reply to a telephone directory unregistered person. It is a flowchart which illustrates the process sequence which displays a message dialog and a PIN code input dialog at the time of a reply to a telephone directory unregistered person. It is a schematic diagram which shows the screen transition until it returns to a telephone directory unregistered person in which the safe word exists in a received mail. It is a flowchart which illustrates the process sequence which replies to the other party whose telephone book is unregistered in which safe word exists in a received mail. It is a schematic diagram which illustrates a safe Word information data structure.

Explanation of symbols

301 Communication Means 302 Input Means 303 Display Means 304 PIN Number Recording Unit 305 PIN Number Registration / Comparison Unit 306 Harmful Information Access Control Unit 307 Safety Information Detection Unit 308 Safety Word Information Recording Unit 309 Harmful Information Detection Unit 310 Harmful Word Information Recording Unit 311 Telephone book information recording unit 312 Primary contractor information recording unit 313 Personal information recording unit 314 Mail information acquisition means 315 Received mail information recording unit 316 Transmission mail information recording unit

Claims (11)

An email terminal with a phone book function that registers personal email addresses, etc.
A personal information recording unit storing personal information of the owner of the mail terminal;
From the date of birth registered in the personal information recording unit, personal information determination means for determining whether the owner is a minor,
A determination result of the personal information determination means, if the owner is determined to be an adult, a password registration means for registering a password;
A harmful word information recording unit that registers information identifying harmful emails sent to or connected to harmful sites;
Harmful information detection means for determining whether or not a keyword registered in the harmful word information recording unit is included in the body of the reply mail or the mail title of the received mail;
If it is determined that the reply email contains harmful information,
Display means for displaying a warning message to that effect;
An input means for requesting a password and inputting the password;
A mail terminal comprising: a communication means for transmitting the reply mail when the input password matches the registered password. The determination target of the harmful information detection means further includes outgoing mail such as newly created mail, and when it is determined that harmful information is included in the newly created mail,
Display means for displaying a warning message to that effect;
An input means for requesting a password and inputting the password;
The mail terminal according to claim 1, further comprising a communication unit that transmits the newly created mail when the input password matches the registered password.   The harmful information detecting means further determines whether or not the transmission address of the transmission mail is registered in a telephone directory information recording unit in which a personal email address is registered, and the transmission address is registered in the telephone directory information recording unit The mail terminal according to claim 2, further comprising a determination unit that determines that the transmitted mail includes harmful information if not. Instead of the password registration means and the input means,
A main contractor information recording unit for storing information about the main contractor of the mail terminal;
As a result of the determination by the personal information determination means, there is provided a communication means for transmitting the content of the transmitted mail to the mail address registered in the main contractor information recording unit when the owner is determined to be a minor. The mail terminal according to claim 2 or 3, characterized by the above-mentioned.   5. The mail terminal according to claim 4, wherein if the mail address is not registered in the primary contractor information recording unit, the communication means displays that the transmission mail cannot be transmitted and rejects the transmission. Instead of the harmful word information recording unit and the harmful information detecting means,
A safety word information recording unit that registers information for identifying an email to be transmitted to or connected to the safety site;
Comprising safety information detecting means for determining whether or not a keyword registered in the safe word information recording unit is included in the email body or the email title to be transmitted;
3. The mail terminal according to claim 2, wherein when it is determined that the safety information is included in the transmitted mail body or mail title, transmission of the transmitted mail is permitted.   The safety information detecting means further determines whether or not the transmission address of the transmission mail is registered in the telephone directory information recording unit in which a personal mail address is registered, and the transmission address is registered in the telephone directory information recording unit. The mail terminal according to claim 6, further comprising a determination unit that determines that the transmitted mail includes safety information. A mail program used in a mail terminal with a phone book function that registers personal mail addresses, etc.
From the date of birth registered in the personal information recording unit storing the personal information of the owner of the mail terminal, a personal information determination step of determining whether the owner is a minor,
If the result of the personal information determination step is that the owner is determined to be an adult, a personal identification number registration step for registering a personal identification number;
A harmful word information recording step for registering information for identifying harmful emails transmitted to or connected to harmful sites;
A harmful information detection step for determining whether or not the keyword registered in the harmful word information is included in the body of the reply mail or the mail title of the received mail;
If it is determined that the reply email contains harmful information,
A display step for displaying a warning message to that effect;
An input step for requesting a password and inputting the password;
A mail program comprising a communication step of transmitting the reply mail if the input password matches the registered password. The determination target of the harmful information detection step further includes outgoing mail such as newly created mail, and when it is determined that harmful information is included in the newly created mail,
A display step for displaying a warning message to that effect;
An input step for requesting a password and inputting the password;
9. The mail program according to claim 8, further comprising a communication step of transmitting the newly created mail when the input password matches the registered password.   The harmful information detection step further determines whether or not the transmission address of the transmission mail is registered in a telephone directory information recording unit in which a personal mail address is registered, and the transmission address is registered in the telephone directory information recording unit The mail program according to claim 9, further comprising a determination step of determining that the transmitted mail includes harmful information if not. Instead of the password registration step and the input step,
A main contractor information recording step for storing information on the main contractor of the mail terminal;
As a result of the determination in the personal information determination step, when the owner is determined to be a minor, a communication step is included for transmitting the content of the transmitted mail to the mail address registered in the main contractor information. The mail program according to claim 9 or 10.

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