JP3663844B2 - E-mail transmission control apparatus and method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an e-mail transmission control apparatus that controls transmission of an e-mail with a specified destination, and more particularly to an e-mail transmission control apparatus that prevents transmission of an e-mail to a transmission destination not intended by the sender.And methodsAbout.
[0002]
[Prior art]
Generally, in a system that transmits an e-mail, an e-mail can be transmitted to any user who has an e-mail address.
A system that can easily specify the destination of an e-mail by selecting with a mouse an e-mail address that has been registered in advance in an address book or the like due to the advancement of the graphical user interface Have come to be seen.
[0003]
And because you can easily specify the destination of the e-mail in this way, even if the sender thinks that you specified the correct destination, there is actually a situation where you specified the wrong destination Many have occurred.
In addition, there is a situation where an e-mail to be sent to a single destination is designated to be sent to a plurality of destinations by a function such as MailingList by a reply function or the like.
When such a situation occurs, not only can the e-mail not be sent to the destination intended by the sender, but also a tremendous and wasteful load on the network, as well as important confidential matters and privacy information. May cause leakage.
[0004]
On the other hand, Japanese Patent Laid-Open No. 63-146538 discloses a system that prevents mail transmission to an incorrect destination by restricting the destination.
In this system, the system administrator registers in advance the destination that can send mail for each mail sender in the destination management book, and every time the mail sender tries to send an email, the system sends the destination Is registered in the transmission destination management book, and an e-mail is transmitted only when transmission is permitted.
[0005]
[Problems to be solved by the invention]
However, in the above-described system, the system administrator must perform the task of previously registering destinations that can be transmitted for each sender in the transmission destination management list, and the load on the system administrator increases as the network size increases. Will increase.
In addition, when a plurality of transmission destinations are registered in the transmission destination management book, even if the transmission destination is wrong among the transmission destinations registered, an electronic mail is transmitted. For example, if two destination addresses “xxx@yyy.zzz” and “aaa@bbb.ccc” are registered in the destination management book, an email to be sent to “xxx@yyy.zzz” Even if “aaa@bbb.ccc” is the destination, the e-mail is sent.
[0006]
The present invention has been made in view of the above-described conventional circumstances, and can easily and effectively prevent the transmission of an e-mail to a destination not intended by the sender.And methodsThe purpose is to provide.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, an e-mail transmission control apparatus according to the present invention is characterized in that, in an e-mail transmission control apparatus that controls transmission of an e-mail with a destination specified, characteristic information about the contents of an e-mail that has already been transmitted Corresponding to the storage means for storing the destination specified in the e-mail in association with each other, the feature information on the content of the e-mail to be sent, and the same destination as the destination specified in the e-mail to be sent Verification means for verifying whether or not the feature information attached and stored in the storage means matchesAnd.
Furthermore, in the electronic mail transmission control apparatus according to the present invention, when it is verified that the verification means matches, the electronic mail to be transmitted may be transmitted to a designated transmission destination. Furthermore, in the electronic mail transmission control device according to the present invention, when it is verified by the verification means that they do not match, the transmission of the e-mail to be transmitted may be suspended, and furthermore, such a match is made. If it is verified that it does not, a warning may be given to the sender of the e-mail.
[0008]
Here, the feature information is the content of the e-mail, such as the appearance frequency of sentences ending with a polite word, the signature of the sender, the appearance frequency of the vocabulary, the words that indicate the destination in the e-mail, etc. Means information about the destination partner, information representing the relationship between the sender and the destination partner, and information representing the vocabulary used between the sender and the destination partner. .
[0009]
In the electronic mail transmission control apparatus described above, the storage means stores the characteristic information related to the contents of the already transmitted electronic mail and the transmission destination specified for the electronic mail in association with each other, and the verification means stores the contents of the electronic mail to be transmitted. Verifies whether the feature information related to and the feature information stored in the storage means associated with the same destination as the destination specified in the email to be sent match.To do. Furthermore, when it is verified by the verification means that they match, the transmission control means can send the transmission target e-mail to the designated destination, and when it is verified that they do not match, the transmission target The electronic mail can be suspended, and a warning can be given to the sender of the electronic mail.
That is, in the e-mail transmission control method according to the present invention, the characteristic information related to the contents of the already transmitted e-mail and the destination specified for the e-mail are stored in association with each other, and the e-mail transmission target is related to the contents of the e-mail to be transmitted. A process of verifying whether or not the feature information matches the feature information of the same destination as the destination specified in the e-mail to be sent is performed. Further, in the e-mail transmission control method according to the present invention, when it is verified that they match as a result of the verification, the e-mail to be transmitted may be transmitted to the designated transmission destination. As a result, if it does not match, the transmission of the e-mail to be sent is suspended, and if it does not match, a warning is sent to the e-mail sender. Good.
Therefore, it is possible to suspend transmission of an electronic mail that is considered to have a possibility that the transmission destination is incorrect, and to ask the sender of the electronic mail whether or not the transmission destination is correct.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An electronic mail transmission control apparatus according to an embodiment of the present invention will be described with reference to FIG.
This electronic mail transmission control apparatus has a mail transmission unit 1, a transmission mail storage unit 2, a transmission mail analysis unit 3, a mail analysis result storage unit 4, and a transmission validity verification unit 5.
[0011]
The mail transmitting unit 1 receives a transmission request for an electronic mail with a specified destination from the sender, and the transmission destination sends a transmission validity verification request signal for requesting verification of whether or not the destination of the electronic mail is valid. When the transmission validity verification unit 5 is notified together with the designated e-mail, the transmission permission signal (Ack) or the transmission invalid signal (Nack) notified from the transmission validity verification unit 5 is received, and the transmission permission signal is received Sends the requested email to the specified destination via the network, but if it receives an invalid transmission signal, it suspends sending the requested email and sends it to the sender. A warning message screen M as shown in FIG. 2 is displayed.
[0012]
On this warning message screen M, a message “The destination may be wrong” is displayed, and information (for example, verified invalid transmission reason, etc.) is sent together with an invalid transmission signal from the transmission validity verification unit 5. This information is also displayed.
The warning message screen is an interface that accepts an instruction input from a sender of an electronic mail for the warning, and has the following functions.
When the transmission instruction button Ma is pressed, an electronic mail whose transmission is suspended is transmitted over the network to a previously specified transmission destination, and when the transmission cancellation button Mb is pressed, the electronic mail whose transmission is suspended Cancel the send request.
In addition, when the e-mail is actually transmitted via the network, the mail transmission unit 1 stores the content of the transmitted e-mail and the transmission destination of the e-mail in the transmission mail storage unit 2.
[0013]
The transmission mail storage unit 2 stores the electronic mail and the transmission destination that has transmitted the electronic mail in association with each other.
In the present embodiment, as shown in FIG. 3, the outgoing mail storage unit 2 includes a mail storage part 2a and a destination mail list storage part 2b, and the mail storage part 2a stores the main body of the email. The destination mail list storage unit 2b stores a list of destination addresses and a pointer (mail ID) to the mail body of the mail storage unit. With this configuration, when the transmission mail analysis unit 3 analyzes a mail, it is possible to easily refer to an electronic mail for each transmission destination.
[0014]
As shown in FIG. 4, the outgoing mail analysis unit 3 includes a sentence end analysis unit 3a, a signature analysis unit 3b, and a vocabulary analysis unit 3c, and is transmitted to the destination specified by the mail transmission unit 1. After the e-mail is stored in the transmission mail storage unit 2, the feature information regarding the content of the transmitted e-mail is obtained for each destination based on the content of the e-mail that is activated and stored in the transmission mail storage unit 2. The analysis result is stored in the mail analysis result storage unit 4.
Hereinafter, the sentence ending analysis unit 3a, the signature analysis unit 3b, and the vocabulary analysis unit 3c will be described in detail.
[0015]
The sentence ending analysis unit 3a inspects the sentence ending of each e-mail stored in the outgoing mail storage unit 2, and ends with a polite word in the whole sentence (hereinafter referred to as a polite sentence). 5 is analyzed for analyzing the degree of inclusion (hereinafter referred to as politeness).
Here, according to the politeness, it is possible to infer the relationship between the sender of the e-mail and the destination partner. For example, if the politeness is high, it means that the sender describes the contents of the e-mail in many polite sentences, so the recipient is the sender's superior or superior. We can guess that there is a relationship.
In this polite word analysis processing for each mail, first, a variable “SentenceNum” for counting the number of sentences in the electronic document and a variable “SentenceCivil” for counting the number of polite sentences are set to an initial value “0” (step S1).
[0016]
Then, search for a phrase or end of mail in the e-mail (step S2), add “1” to the variable “SentenceNum” (step S3), and whether the sentence ending with the phrase or end of mail is a polite sentence. (1) is added to the variable “SentenceCivil” (step S5). On the other hand, if it is not a polite sentence, nothing is done.
Then, the above processing (steps S2 to S5) is performed until the end of mail is searched (step S6). When the end of mail is searched, the variable “SentenceCivil” is divided by the variable “SentenceNum” to be polite. Is calculated (step S6). If the politeness calculated by the above processing is stored in association with each e-mail, the above processing is performed only for the e-mail newly stored in the outgoing mail storage means 2. Just do it.
[0017]
Then, the sentence end analysis unit 3a obtains an average politeness obtained by averaging the politeness of each electronic mail for each transmission destination, and stores the average politeness in association with the transmission destination in the mail analysis result storage unit 4.
In this embodiment, since the contents of the recently sent e-mail more appropriately represent the relationship between the current sender and the destination partner than the e-mail sent in the past, In order to reflect the average politeness, the weight for the newest e-mail is set to “1”, the weight is decreased exponentially as the past e-mail becomes, and these weights are multiplied by the politeness for each e-mail. The weighted average is performed.
[0018]
  The signature checking unit 3b is connected to the outgoing mail storage unit 2For each e-mail stored in the e-mail, a signature check process for each mail is performed to check a signature added to the end of the text.
  Here, according to the signature, the relationship between the sender of the e-mail and the other party of the destination can be estimated. This differs depending on the destination, for example, when sending an e-mail to a close friend, sending an e-mail to a customer outside the company, or sending an e-mail in-house, etc. This is because the signature is used.
[0019]
In the above-described signature verification process for each mail, a plurality of signatures prepared in advance by a mail editing software (not shown) are picked up, and by matching these signatures with words at the tail of each email, which signature is added. Inspect whether it is done.
The signature checking unit 3b analyzes the signature that is used most frequently for each transmission destination, and stores the signature in the mail analysis result storage unit 4 in association with the transmission destination.
In the present embodiment, the contents of the recently sent e-mail more appropriately represent the relationship between the current sender and the destination party than the e-mail sent in the past. In order to reflect the frequency of use, the weight for the newest e-mail is set to “1”, the weight decreases exponentially as the e-mail becomes a past e-mail, and the use frequency of the signature is calculated using these weights. Is going.
[0020]
The vocabulary analysis unit 3c includes a noun database 3d, a phrase analysis unit 3e, a noun classification unit 3f, a frequency table creation unit 3g, and a frequency counting unit 3h.
Then, the vocabulary analyzing unit 3c performs a lexical analysis process for each mail that examines a noun for each electronic mail stored in the transmitted mail storage unit 2 and analyzes the appearance frequency of each noun.
Here, according to the appearance frequency of the vocabulary, it is possible to grasp the vocabulary often used between the sender of the electronic mail and the other party of the transmission destination.
[0021]
In this lexical analysis process for each mail, the phrase analysis unit 3e performs phrase analysis on the e-mail document to extract nouns, and the noun classification unit 3f stores the extracted nouns as general nouns and proper nouns 3d. To classify them into general nouns, proper nouns, and other nouns (hereinafter referred to as special nouns).
Next, the frequency table creation unit 3g obtains the frequency of appearance for each noun, and creates an appearance frequency table that associates the noun and the appearance frequency of the noun for each noun classification. If the appearance frequency table created by the above process is stored in association with each e-mail, the above process is performed only for the e-mail newly stored in the transmitted mail storage means 2. Just do it.
[0022]
The vocabulary analysis unit 3c then aggregates the appearance frequency of nouns for each destination noun classification, creates an appearance frequency table for each noun classification for each transmission destination, and associates the appearance frequency table with the transmission destination. Store in the mail analysis result storage unit 4.
In the present embodiment, since the contents of the recently sent e-mail more appropriately represent the vocabulary used between the current sender and the destination partner than the e-mail sent in the past, In order to reflect this in the appearance frequency table for the transmission destination, the weight for the newest e-mail is set to “1”, the weight is decreased exponentially as the past e-mail becomes, and these weights are used. Aggregate the frequency of appearance of nouns.
[0023]
As shown in FIG. 7, the mail analysis result storage unit 4 associates feature information regarding the contents of the email transmitted for each destination, and the feature information is obtained by analysis by the transmitted mail analysis unit 3. Furthermore, it has an average politeness level Ka, a signature Kb with a high usage frequency, a general noun appearance frequency table Kc, a proper noun appearance frequency table Kd, and a special noun appearance frequency table Ke.
[0024]
As shown in FIG. 8, the transmission validity verification unit 5 includes a sentence end verification unit 5a, a signature verification unit 5b, and a vocabulary verification unit 5c, and a transmission validity verification request notified from the mail transmission unit 1. Receives an e-mail with a specified signal and destination, analyzes characteristic information about the content of the received e-mail, and analyzes the mail in association with the analyzed characteristic information and the destination specified in the e-mail It verifies whether or not the feature information related to the content of the electronic mail stored in the result storage unit 4 matches, and notifies the mail transmission unit 1 of the verification result.
Hereinafter, the sentence end verification unit 5a, the signature verification unit 5b, and the vocabulary verification unit 5c will be described in detail.
[0025]
The sentence end verification unit 5a analyzes the politeness of the electronic mail notified from the mail transmission unit 1. This politeness analysis can be realized by performing the same processing as the above-mentioned per-mail politeness analysis processing on the e-mail notified from the mail transmitting unit 1 by the sentence end analyzing unit 3a.
Then, the sentence end verification unit 5a determines the politeness of the analyzed electronic mail and the average politeness stored in the mail analysis result storage unit 4 in association with the transmission destination specified in the analyzed electronic mail. It is detected whether or not they match. In the present embodiment, it is determined that the two politeness matches when the difference is within a predetermined threshold (for example, 0.5).
[0026]
As a result, if they match, it can be determined that the transmission destination is not wrong, so that the signature verification unit 5b is notified to perform verification by the signature next. , This means a situation such as trying to send an e-mail with a sentence that is not a polite sentence to a destination that was sent in a polite sentence in the past, so the sender specifies the wrong destination Since it is possible to determine that the possibility is high, a transmission invalid signal (Nack) is notified to the mail transmission unit 1 together with an unreasonable transmission reason such as “difference in politeness”.
[0027]
When the signature verification unit 5b receives a verification instruction with a signature from the sentence end verification unit 5a, the signature verification unit 5b analyzes the signature of the electronic mail notified from the mail transmission unit 1. The signature analysis can be realized by performing the same processing as the signature analysis processing for each email by the signature analysis unit 3b on the email notified from the email transmission unit 1.
The signature verification unit 5b then associates the analyzed email signature with the high-use signature stored in the email analysis result storage unit 4 in association with the destination specified in the analyzed email. Is detected.
As a result, if the two signatures match, it can be determined that the transmission destination is not wrong, so that the vocabulary verification unit 5c is notified to perform verification based on the vocabulary appearance frequency next, while matching. If there is not, it can be determined that there is a high possibility that the transmission destination is wrong. Therefore, a transmission invalid signal (Nack) is notified to the mail transmission unit 1 together with a transmission invalid reason such as “signature difference”.
[0028]
When the vocabulary verification unit 5c receives a verification instruction based on the vocabulary appearance frequency from the signature verification unit 5b, the vocabulary verification unit 5c analyzes the appearance frequency for each noun of the email notified from the mail transmission unit 1. The analysis of the appearance frequency for each noun can be realized by performing the same processing as the above-described lexical analysis processing for each email by the vocabulary analysis unit 3c on the email notified from the email transmission unit 1.
Then, the vocabulary verification unit 5c correlates the appearance frequency of the analyzed noun of the email with the destination specified in the analyzed email and stores the noun stored in the email analysis result storage unit 4. The following processing is performed to detect whether the appearance frequency matches each noun classification such as general noun, proper noun, special noun.
[0029]
In this process, the top five nouns are extracted from the e-mail appearance frequency table analyzed in each noun classification, and the appearance frequencies corresponding to the extracted nouns are extracted from the e-mail analysis result storage unit 4 appearance frequency table. Further, the top five nouns are extracted from the appearance frequency table of the mail analysis result storage unit 4, and the appearance frequencies corresponding to the extracted nouns are extracted from the analyzed electronic mail appearance frequency table.
[0030]
Then, it is detected whether or not the sum of all the extracted appearance frequencies exceeds a predetermined threshold value.
As a result, when the sum exceeds a predetermined threshold value, it is detected that the appearance frequencies coincide with each other. On the other hand, when the appearance frequency is equal to or lower than the predetermined threshold value, the other in the mail analysis result storage unit 4 is detected. In the same manner as described above, the sum of the appearance frequencies is obtained with the appearance frequency table associated with the destination, and the sum of the appearance frequencies with the appearance frequency table associated with the designated destination is obtained. Detect if there is a high value.
As a result, if there is a high value, it can be determined that there is a high possibility that the transmission destination is wrong. Therefore, an inappropriate transmission signal such as “difference in appearance frequency” is notified to the mail transmission unit 1. To do. In this case, the transmission destination where the highest value is detected is transmitted as a transmission destination candidate to be originally transmitted by adding information notifying the transmission destination to the transmission invalid signal.
On the other hand, if there is no high value, it is detected that the appearance frequencies match.
[0031]
The above processing is performed for each noun classification, and when it is detected that the appearance frequencies are the same in all noun classifications, a transmission permission signal is notified to the mail transmission unit 1 that the designated transmission destination is valid. To do.
Here, among general nouns, proper nouns, and special nouns, special nouns are most likely specific for each destination, while general nouns are unlikely to be specific for each destination. For this reason, in this embodiment, it is assumed that the threshold used when performing the above-described processing for special nouns is maximized, and the threshold used when performing the processing for general nouns is minimized. The judgment that the tip is wrong is not made.
[0032]
Here, the storage means referred to in the claims is mainly configured by the above-described transmission mail analysis unit 3 and mail analysis result storage unit 4 operating, and the verification means referred to in the claims mainly includes The transmission validity verification unit 5 described above and the transmission control means referred to in the claims are mainly configured by the mail transmission unit 1 described above.
[0033]
Next, the operation of the above electronic mail transmission control apparatus will be described.
In this electronic mail transmission control apparatus, when the electronic mail transmission unit 1 transmits an electronic mail to a designated transmission destination, the electronic mail and the designated transmission destination are stored in the transmission mail storage unit 2.
Then, the outgoing mail analysis unit 3 analyzes the content of the electronic mail stored in the outgoing mail storage unit 2, creates characteristic information about the content of the electronic mail transmitted for each destination, and stores it in the mail analysis result storage unit 4. Store.
[0034]
Thereafter, when the mail transmitting unit 1 accepts an e-mail transmission request from the sender, the e-mail requested to be transmitted is notified to the transmission validity verifying unit 5 together with the transmission validity verification request signal.
Upon receiving this transmission validity check request signal, the transmission validity verification unit 5 performs a transmission validity verification process shown in FIG.
[0035]
That is, the transmission validity verification unit 5 analyzes the politeness of the received e-mail (step S11), and the politeness is transmitted to the transmission destination specified in the e-mail in the mail analysis result storage unit 4. By verifying whether or not the average politeness of the electronic mail matches, it is determined whether or not the transmission destination is appropriate with respect to the politeness (step S12).
[0036]
As a result, when the politeness matches and the transmission destination is valid with respect to the politeness, the e-mail signature is analyzed (step S13), and the signature is designated as the e-mail in the e-mail analysis result storage unit 4. By verifying whether or not the signature of the electronic mail transmitted to the transmission destination that has been sent matches the signature, it is determined whether or not the transmission destination is valid with respect to the signature (step S14).
As a result, if the signatures match and the transmission destination is valid with respect to the signature, the appearance frequency of the vocabulary of the e-mail is analyzed (step S15), and the appearance frequency of the vocabulary is determined in the mail analysis result storage unit 4 It is determined whether or not the transmission destination is appropriate with respect to the appearance frequency of the vocabulary by verifying whether or not it matches the appearance frequency of the vocabulary of the email transmitted to the transmission destination specified in the electronic mail ( Step S16).
[0037]
As a result, if the appearance frequency of the vocabulary matches and the transmission destination is valid for the vocabulary, it means that the transmission destination is valid for all of the politeness, the signature, and the appearance frequency of the vocabulary. A permission signal is notified to the mail transmission unit 1 (step S17).
On the other hand, in the above steps S12, S14, and S16, if the transmission destination is not valid, the transmission destination signal is notified to the mail transmission unit 1 that the transmission destination may be wrong (step S18). In addition to the transmission invalid signal, information such as the reason why the transmission destination is invalid is added and notified.
[0038]
Then, when the mail transmission unit 1 receives the transmission permission signal from the transmission validity verification unit 5 by the above processing, the electronic mail requested to be transmitted is transmitted to the designated transmission destination via the network.
On the other hand, when the mail transmission unit 1 receives the transmission invalid signal from the transmission validity verification unit 5, the transmission of the electronic mail requested for transmission is suspended, and a warning message screen M as shown in FIG. Ask the sender of the email to confirm the destination.
FIG. 2 shows the frequency of appearance of proper nouns in the email to be sent and the frequency of appearance of proper nouns in the email sent to the destination specified in the email to be sent in the email analysis result storage unit 4. This is a warning message screen when there is no match, and displays a message that the appearance frequency of proper nouns does not match, and a destination candidate that is considered to be most suitable as a transmission target.
[0039]
In this warning message screen M, when the transmission instruction button Ma is pressed, this means that the sender has confirmed that the transmission destination specified earlier is correct. When the target e-mail is transmitted to the destination specified earlier, and the cancel transmission button Mb is pressed, it means that the sender confirms that the destination specified earlier is wrong. Therefore, stop sending e-mails to be sent.
[0040]
Therefore, you can defer sending emails that are likely to be in the wrong destination, preventing emails from being sent to the wrong destination, and confirming the destination to the sender You can ask.
[0041]
Each functional unit described above is configured by a processor executing a control program (stored in advance in ROM, RAM, etc.). However, in the present invention, these functional units may be configured as independent hardware circuits. Good.
In addition, the present invention allows the above control program to be grasped as a computer-readable storage medium such as a floppy disk or a CD-ROM, and the control program is read from the storage medium and executed by a processor. Such processing can also be executed.
[0042]
【The invention's effect】
As explained above,According to the present invention, it is possible to prevent an e-mail from being sent to an incorrect destination that is not intended by the sender, which can cause unnecessary load on the network, and leakage of confidential matters and privacy information. It can also be prevented.
In addition, in this electronic mail transmission control apparatus, there is no need to work with the intervention of a person such as a system administrator.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an electronic mail transmission control apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a warning message screen according to an embodiment of the present invention.
FIG. 3 is a configuration diagram of an outgoing mail storage unit according to an embodiment of the present invention.
FIG. 4 is a configuration diagram of an outgoing mail analysis unit according to an embodiment of the present invention.
FIG. 5 is a flowchart illustrating the operation of a sentence ending analysis unit according to an embodiment of the present invention.
FIG. 6 is a configuration diagram of a lexical analyzer according to an embodiment of the present invention.
FIG. 7 is a configuration diagram of a mail analysis result storage unit according to an embodiment of the present invention.
FIG. 8 is a configuration diagram of a transmission validity verification unit according to an embodiment of the present invention.
FIG. 9 is a flowchart illustrating an operation of a transmission validity verification unit according to an embodiment of the present invention.
[Explanation of symbols]
1. Mail sending part,
2 ・ Sent mail storage,
3. Send mail analysis part,
4. Mail analysis result storage
5 ・ ・ Transmission validity verification part.

Claims (6)

In an e-mail transmission control device that controls transmission of an e-mail with a specified destination,
An analysis means for analyzing characteristic information relating to the content of an already sent email;
Storage means for associating and storing characteristic information relating to the content of an already sent email and a destination specified for the email;
A characteristic information about the content of the electronic mail to be transmitted, or said feature information in association with the transmission same destination and transmission destination designated in an e-mail subject stored in said storage means coincides Verification means for verifying whether or not,
If it is verified by the verification means that they match, the transmission target e-mail is transmitted to a specified destination, while if the verification means does not match, the e-mail to be transmitted is transmitted. A transmission control means for suspending transmission of
An e-mail transmission control apparatus comprising: In the e-mail transmission control device according to claim 1,
  The e-mail transmission control device characterized in that the transmission control means warns an e-mail sender when the verification means does not agree. In the e-mail transmission control apparatus according to claim 1 or 2,
  The e-mail transmission control apparatus characterized in that the analysis means uses at least one of an appearance frequency of a sentence whose sentence ends with a polite word, a sender's signature, and an appearance frequency of a vocabulary as characteristic information. Analyzing means for analyzing feature information relating to the contents of an already sent e-mail, and storing means for storing the feature information relating to the contents of an already sent e-mail in association with the destination specified in the e-mail. The e-mail transmission control device provided is an e-mail transmission control method for controlling transmission of an e-mail with a specified destination,
  The verification means provided in the e-mail transmission control device stores the characteristic information relating to the content of the e-mail to be transmitted and the storage associated with the same destination as the transmission destination designated in the e-mail to be transmitted Verifying whether the feature information stored in the means matches,
  When the transmission control means provided in the e-mail transmission control device is verified by the verification means to match, the transmission target e-mail is transmitted to the specified destination, while the verification means matches. If it is verified that the e-mail is not sent, the e-mail transmission control method suspends transmission of the e-mail to be transmitted. In the e-mail transmission control method according to claim 4,
  An e-mail transmission control method characterized in that the transmission control means warns the e-mail sender when the verification means verifies that they do not match. In the e-mail transmission control method according to claim 4 or 5,
  The e-mail transmission control method characterized in that the analysis means uses at least one of an appearance frequency of a sentence ending with a polite word, a sender's signature, and a vocabulary appearance frequency as characteristic information.

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