JP2013004103A - Mail management method and mail management device using chunk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device of processing mail by using a chunk.SOLUTION: The e-mail(electronic mail) processing method is characterized by including: a step of searching one or more chunks having an inclusive relation with the other chunks in each e-mail; a step of registering any chunk which does not exist in chunk collection among one or more chunks in the chunk collection; and a step of associating the identifier of the e-mail with each of one or more chunks in the chunk collection.

Description

  The present invention relates to a method and apparatus for managing mail.

  A method and apparatus for handling operations related to email by using chunks in the email is disclosed.

  An e-mail (e-mail, e-mail, hereinafter referred to as e-mail) represents an electronic document that is transmitted and received between users via a computer communication network such as the Internet. Mail refers to a system or means that can exchange such electronic documents.

  As an additional function of mail, there is a reply (RELY) and forwarding (forward) function.

  The reply is to send a reply to the original mail received by the recipient of the specific mail to the sender of the original mail.

  Forwarding is performed by sending the original mail itself or a part of the original mail received by the recipient of the specific mail to other parties, such as by adding content to the original mail. is there.

  When a user creates a reply mail (or forwarded mail) for the original mail received by the user, the user's mail client program generally has a function to insert the contents of the original mail into the reply mail (or forwarded mail). Have. The contents of the original mail are generally inserted at the end of the reply mail (or forwarded mail). Thus, the reply mail (or forward mail) includes the contents of the original mail.

  Therefore, when a user exchanges emails several times by replying or forwarding to a specific subject, the recipients of the emails exchanged before that exchanged between the users through the contents inserted at the bottom of the email You can check the contents of the email.

  As a result of this insertion, the reply mail or the forward mail is gradually increased in content by repeating the reply or transfer, and the data size is increased. Moreover, the same contents (that is, the contents of the original mail) may be duplicated in other mails (that is, the original mail and the reply mail (or forwarded mail)) due to the reply or transfer.

  In particular, if an email is sent to several recipients or several referrals, the content increases due to replies or forwards, the amount of data increases, and several emails with the same content are generated There is.

  Such an increase in the size of mail data and the number of mails causes a problem that an excessive load is applied to the mail system.

  An object of the present invention is to provide an apparatus and a method for searching for a chunk included in a mail and indexing the chunk with a unique string included in the chunk.

  Another object of the present invention is to provide an apparatus and a method for searching and providing a mail including a search word based on the contents of an indexed chunk.

  According to an embodiment of the present invention, searching for one or more chunks each in an email containing an inclusive relationship with other chunks, and among the one or more chunks, a chunk that does not exist in a chunk collection. Is registered in the chunk collection, and an email processing method is provided that includes associating an identifier of the email with each of the one or more chunks in the chunk collection.

  The step of searching for one or more chunks in the email includes identifying the content for distinguishing previously sent and received emails included in the email when the email is replied or forwarded. One or more chunks may be searched.

  Of the one or more chunks, the nth chunk may include the (n-1) th chunk, and n may be the number of the one or more chunks.

  Registering a chunk that does not exist in the chunk collection among the one or more chunks in the chunk collection and associating an identifier of the email with each of the one or more chunks in the chunk collection. The chunks may be performed on each of the one or more chunks in descending order of size.

  The chunk collection may include the chunk string, the chunk identifier, one or more email identifiers associated with the chunk, and a unique string of the chunk.

  The unique string of the chunk may be a content added in the chunk compared to the content of the lower chunk among the contents of the chunk.

  The e-mail processing method may further include a step of indexing contents additionally included in the chunk registered in the chunk collection.

  The email processing method may further include providing an email related to the registered chunk as a search result of a search term based on the indexed content.

  The search term may be included as contents additionally included in the registered chunk.

  According to another embodiment of the present invention, a chunk collection for storing one or more chunks and data related to the chunks, and one or more chunks each in an email in an inclusive relationship with other chunks are searched. A chunk search unit for registering, and among the one or more chunks, register a chunk that does not exist in the chunk collection in the chunk collection, and assign an identifier of the email to each of the one or more chunks in the chunk collection. An email processing device is provided that includes an associated chunk registration unit.

  ADVANTAGE OF THE INVENTION According to this invention, the apparatus and method which search the chunk contained in an email can be provided.

  According to the present invention, the amount of chunk collection and index can be reduced by indexing the chunk with the unique string that the chunk has.

  According to the present invention, it is possible to provide an apparatus and a method for searching for and providing a mail including a search word based on the contents of an indexed chunk.

  According to the present invention, it is possible to highlight a portion corresponding to a search word in an email provided as a search result by indexing.

It is a figure explaining the chunk of the mail concerning one embodiment of the present invention. It is a figure explaining an example of the production | generation of the chunk by transmission and reply of mail which concern on one Embodiment of this invention. It is a figure which shows an example of the chunk collection which concerns on one Embodiment of this invention. It is a flowchart of the mail processing method which concerns on one Embodiment of this invention. 1 is a structural diagram of a mail processing apparatus according to an embodiment of the present invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited or limited by the embodiments. Like reference symbols in the various drawings indicate like elements.

  FIG. 1 is a diagram for explaining a chunk of a mail 100 according to an embodiment of the present invention.

  The mail 100 may include information on a mail header that can be said to be a bibliographic item of the mail such as the subject 110, the sender and the receiver 120. In addition, the mail 100 may include a text 130.

  In FIG. 1, the subject 110 of the mail 100 is “RE: RE: chunk”, for example. “Mail_tester1” having the mail address “mail_tester1@naver.com” is the sender of the mail 100. Further, “mail_tester2” having a mail address “mail_tester2@naver.com” is a recipient of the mail 100.

  The content of the text 130 indicates that mail was exchanged several times between the sender and the receiver.

  First, at 18: 4: 48 on March 23, 2011, “mail_tester2” sent a first mail with “mail_tester1” with the subject “chunk” and the text “first content”.

  Next, as a reply to the first email, at 18: 6: 02 on March 23, 2011, “mail_tester1” has “mail_tester2” with the subject “RE: chunk” and the text “added content # 1”. I sent a second email.

  The second mail is one that “mail_tester1” is created and sent as a reply mail for the first mail.

  When the second mail is created, the contents of the first mail, the information of the mail header of the first mail (that is, the sender of the first mail, the receiver of the first mail, the referrer (CC) of the first mail, The string "----- Original Message -----" representing the content of the first mail and the time at which the first mail was sent) added.

  Thereafter, the third mail and the mail 100 were sent as reply mails in the order of the third mail and the mail 100 between “mail_tester1” and “mail_tester2”.

  Body 130 may include chunks. A chunk is a set of strings that make up a mail message. That is, the chunk may be a string of the entire specific mail.

  The chunk may be a string obtained by removing one or more of a line feed character and a space character from the mail content. Such a removal may be performed mainly for a hash described later. Therefore, the chunk may be one obtained by removing line feed characters, white space characters, etc. from the mail contents.

  The first chunk 140 is the entire body 130 of the mail 100. The first chunk 140 may be a string of the entire mail 100.

  The second chunk 150 is the content of the third mail transmitted before the mail 100. That is, the third mail and the mail 100 have a relationship of the original mail and the reply mail. That is, the mail 100 is generated based on the return (or transfer) of the third mail.

  The second chunk 150 may be a string of the entire third mail.

  The third chunk 160 is obtained by stringing the content of the second mail transmitted before the third mail.

  The fourth chunk 170 is a string of the contents of the first mail transmitted before the second mail.

  The first chunk 140 includes a second chunk 150. Also, as shown in FIG. 1, the four chunks 140, 150, 160 and 170 are inclusive of each other. Chunk 140 includes chunks 150, 160, and 170, chunk 150 includes chunks 160 and 170, and chunk 160 includes chunk 170.

  The unique string 180 may be the content of the mail 100 created by the sender (ie, “mail_tester1”).

  For example, the unique string 180 may be content added in the first chunk 140 compared to the second chunk 150 in the content of the first chunk 140.

  Alternatively, the unique string 180 may be content obtained by removing the information of the mail header of the previously transmitted mail from the contents added in the first chunk 140 as compared with the second chunk 150. That is, the unique string 180 is the content of the first chunk 140 excluding information on the second chunk 150 and the mail header of the third mail.

  The first to fourth chunks 140, 150, 160, and 170 may be distinguished based on a specific partition string.

  The segment string may be content for segmenting a previously sent email that is attached to the email 100 when the email 100 is created for reply or forwarding.

  That is, the section string means a string “---- Original Message —----” in the text 130, and may include the string “----- Original Message ————”. The classification string is a string indicating information of a mail header of a previously sent mail (for example, “From:...”, “To:...”, “Cc:...”, “Sent: ... "and" Subject: ... ").

  FIG. 2 is a diagram for explaining generation of chunks by sending and replying mail according to an example of the present invention.

  Mail is exchanged several times between the users 210.

  Here, the symbols “A” and “B” in the user 210 represent users who are the subject of mail transmission / reception. The symbol displayed on the left side of the arrow indicates the sender, and the symbol displayed on the right side of the arrow indicates the recipient.

  Mail transmitted / received between the users 210 may be represented as a chunk 220 in which the entire mail is stringed. That is, the user 210 exchanges chunks.

  The chunks 220 transmitted and received between the users 210 are displayed from the bottom to the top according to the time order generated and transmitted. That is, the most recently sent chunk is displayed at the top.

  If the mail corresponding to the chunk located at the lower side is the original mail, the mail corresponding to the chunk located at the upper side can be regarded as a reply mail or a forwarded mail for the original mail.

  As described above, when a mail is created for replying to a certain mail or forwarding a certain mail, the contents of the original mail may be included in the created reply mail or forwarding mail. Therefore, the mail generated by reply or transfer may include the contents of the original mail. That is, in FIG. 2, a higher-ranked chunk generated later (that is, a chunk positioned higher in the figure) is a lower-ranked chunk generated earlier (that is, positioned lower in the figure). Chunk) content (ie, a string of chunks).

  For example, the fourth chunk in the fourth column, counting from the highest first chunk, contains the string “c”. All chunks contain “a” which is the contents of the first generated chunk.

  In such a case, the size of the chunk increases as the reply or transfer is repeated, and most of the contents of the chunk are the contents of the lower chunk (that is, the previously sent chunk located at the lower side in the figure). And overlap. That is, the highest first chunk has “fedcba” as its content, but “edcba” is included in the lower second chunk. That is, “edcba” is duplicated in the contents of the first chunk.

  Each chunk has a unique string 230.

  The unique string 230 is a string that is not included in the lower chunk. The unique string may be content (or a stringed content) created directly by the sender of the email when the email corresponding to the chunk is created.

  FIG. 3 is a diagram illustrating a chunk collection 300 according to an example of the present invention.

  The chunk collection 300 is a data structure for processing chunks in the system, and has a data structure. The chunk collection 300 may register (or store) one or more chunks used in the system and data related to the chunks.

  Each row of the chunk collection 300 corresponds to one registered chunk.

  Each column of the chunk collection 300 may include a chunk string 310, a chunk identifier 320, a mail identifier list 330, and a unique string 340.

  That is, the chunk collection 300 may include a chunk string 310, a chunk identifier 320, a mail identifier list 330, and a unique string 340 for each of one or more registered chunks.

  The chunk string 310 stores a chunk string indicating the contents of the registered chunk.

  For example, the content of the first chunk (ie, the string of the first chunk) is “dcba”.

  A hashed value (not shown) of the chunk string 310 may be stored in association with the chunk.

  When the hashed value of the chunk string 310 is stored, when searching for a specific chunk among the chunks registered in the chunk collection 300 using the search word, the hashed value of the search word and the hash of the chunk string 310 are stored. The search efficiency can be improved by searching for a specific chunk by comparing the obtained values.

  The chunk identifier 320 indicates the identifier of the registered chunk.

  The chunk identifier 320 is used to identify a registered chunk in the system.

  In general, in principle, one chunk identifier 320 is assigned to each registered chunk. However, for example, in exceptional cases where different users' mails have the same content chunk, two or more chunk identifiers 320 may be assigned to the registered chunk.

  The mail identifier list 330 shows identifiers for identifying mails including registered chunks among mails in the system.

  That is, the mail identifier list 330 indicates the identifiers of mails including registered chunks among the mails in the system. The mail identifier list 330 may be an identifier of one or more mails related to the registered chunk.

  For example, the chunk string 310 of the chunk whose chunk identifier 320 is “1” is “a”, and the mail whose mail identifier is “A”, “B”, “C” or “D”, respectively, is the chunk string 310 “. a ”.

  For example, the chunk string 310 of the chunk whose chunk identifier 320 is “3” is “cba”, and the mail whose mail identifier is “C” or “D” respectively includes the chunk string 310 “cba”.

  The unique string 340 may be the unique string 180 described above with reference to FIG.

  For example, the unique string 340 may be content added in a registered chunk in comparison with the content of a lower chunk of the registered chunk among the registered chunk contents. That is, the unique string 340 may be a string that does not include a lower chunk of the registered chunk among the registered chunk strings.

  For example, the unique string 340 may be the unique content of a registered chunk that is a portion of the registered chunk contents excluding the lower chunk. In other words, the unique string 340 is actually created at the time of sending the mail, excluding the substantial contents (that is, the contents of the original mail and the information of the mail header, etc.) from the contents of the mail corresponding to the registered chunk. Content).

  If a specific mail contains a specific chunk, the specific mail must be associated with the specific chunk in the system.

  The mail is further associated with the chunk by the following operations (1) and (2).

  (1) Refer to the chunk collection 300 for the chunk included in the mail, and if the same chunk as the chunk to be added in the chunk collection 300 already exists, the identifier of the mail is added to the mail identifier list 330 of the same chunk that already exists Is done.

  (2) If there is no chunk in the chunk collection 300 that is the same as the chunk to be added, the chunk is registered in the mail identifier list 330 first. That is, an entry including the chunk string 310 of the chunk (if necessary, a hash value of the chunk string 310), the chunk identifier 320, and the unique string 340 is added to the chunk collection 300. Next, the mail identifier is added to the mail identifier list 330 of the registered specific chunk.

  Registered chunks with the same chunk identifier 320 may be grouped. Also, registered chunks with different chunk identifiers 320 may be processed by different mail threading.

  FIG. 4 is a flowchart of a mail processing method according to an embodiment of the present invention.

  A mail is received in mail receiving step S410.

  In the chunk search step S420, one or more chunks in the received mail are searched.

  One or more chunks may constitute a hierarchical relationship. That is, as described above, one chunk may include different chunks (that is, chunk contents).

  For example, when the number of retrieved chunks is n (n is a natural number greater than or equal to 0), the nth chunk may include the (n-1) th chunk in order of ascending order of chunk size.

  In the chunk search step S420, when the mail is a reply mail or a forwarded mail, the chunk is searched by identifying the mail contents for distinguishing the mail exchanged before the mail.

  Here, the mail content for classifying previously exchanged mail may be the classification string described above with reference to FIG.

  In the chunk confirmation step S430, it is checked whether each of the one or more chunks exists in the chunk collection 300, that is, whether it is registered.

  Chunk registration step S440 is performed for chunks that do not exist in the chunk collection 300, and then an email identifier addition step S450 is performed for chunks in the chunk collection 300.

  In the chunk registration step S440, chunks that do not exist in the chunk collection 300 among one or more chunks are registered in the chunk collection 300.

  In the mail identifier adding step S450, the received mail identifier is associated with each of one or more chunks in the chunk collection 300. That is, the identifier of the received mail is added to the mail identifier list 330 of each of one or more chunks in the chunk collection 300.

  Steps S440 and S450 described above may be performed for each of one or more chunks in descending order of chunk size (ie, from a large chunk to a small chunk). In such a case, the chunks included in the received mail are used in order from the large chunk to the small chunk.

  Alternatively, step S440 and step S450 described above may be performed for each of one or more chunks in ascending order of the size of the chunks (that is, from a smaller chunk to a larger chunk).

  The chunk collection 300 is updated by the mail received in steps S410 to S450 described above. That is, one or more chunks included in the received mail are searched, whether the searched chunks are in the chunk collection 300 is searched in order, and unsearched chunks are added to the chunk collection 300. (Generally, from large chunks to small chunks)

  In the chunk indexing step S460, the chunks registered in the chunk collection 300 are indexed.

  The chunk newly registered in the chunk collection 300 is a chunk that does not exist in the conventional chunk collection 300. Therefore, indexing processing in the chunk collection 300 needs to be performed.

  The lower chunk of the newly registered chunk is the already registered chunk. In this case, it is not necessary to re-index the lower chunk. In addition, if the lower chunk of a newly registered chunk is also a newly registered chunk, the indexing for the contents contained in the lower chunk (that is, the lower chunk string) is indexed for the lower chunk and is separate from the chunk containing the lower chunk. To be done.

  Therefore, the indexing for the newly registered chunk may be performed while excluding the contents included in the lower chunk.

  That is, in the chunk indexing step S460, for the newly registered chunk, only the unique string 340, which is the content additionally included in the newly registered chunk, is indexed.

  Indexing using the unique string 340 as described above reduces the overall amount of the chunk collection 300 and reduces the amount of content to be indexed.

  The mail search step S470 indicates a step of providing a mail search result by using the indexed contents.

  The user uses the search term to search for an email that matches the search term.

  In the mail search step S470, mail related to the registered chunk based on the indexed content is provided as a search term search result.

  Here, the case where the mail includes a search word may refer to a case where the content additionally included in the registered chunk includes the search word. That is, referring to the registered unique string 340 of the chunk, it is determined whether the search word is included.

  Therefore, the case where the mail includes the search word is a case where the index generated by indexing the unique string 340 in the chunk indexing step S460 includes the search word.

  By searching the indexed content, it is determined whether or not the registered chunk includes a search word. Then, it is confirmed whether the mail related to the registered chunk includes the search word, and the relation including the search word (and the search stream including the matter related to the search word) via the mail identifier list 330 in the chunk collection 300. To be identified.

  The mail related to the registered chunk may be provided to the user via the user terminal as a search result by highlighting a part corresponding to the search word by indexing.

  Here, provision as a search result includes methods such as screen display, printing, and transmission of mail data (that is, contents).

  For example, when the user clicks a list of mails provided as a search result, opens the corresponding mail, and outputs it, a portion corresponding to the search word is highlighted.

  Further, mail having the same chunk identifier 320 as the final mail may be automatically classified and provided on the basis of the final mail (that is, the mail transmitted / received last and containing the most content).

  For example, one or more mails including a search term may be provided to the user in a form such as a tree structure according to the inclusion relation of chunks based on the final mail. Here, the mail sent earlier (ie, the original mail) becomes the tree parent node, and the mail generated and sent by replying or forwarding to the mail sent earlier (ie, the original mail) The reply mail or the forward mail) becomes a child node of the parent node.

  The unsealing process step S480 is a step of performing a process of setting all the mails related to the specific mail to be read when the user reads the specific mail.

  In the opening process step S480, the specific mail read by the user and the related mail are opened.

  For example, when the user reads a specific mail, the mail before the specific mail may be identified by using the chunk collection 300.

  That is, when one or more chunks including a specific mail are searched, mail corresponding to each of the searched one or more chunks may be searched using the mail identifier list 330 of the chunk collection 300.

  The content of the specific mail read by the user includes the content of the retrieved mail. And it is considered that the mail with the same recipient among the retrieved mails is read together by the user reading the specific mail.

  FIG. 5 is a structural diagram of a mail processing apparatus 500 according to an embodiment of the present invention.

  The mail processing device 500 may include a transmission / reception unit 510, a chunk search unit 520, a chunk registration unit 530, a chunk processing unit 540, and a chunk collection 550.

  The transmission / reception unit 510 may perform step S410 described above.

  For example, the transmission / reception unit 510 may receive an email.

  The chunk search unit 520 may perform step S420 described above.

  For example, the chunk search unit 520 may search for one or more chunks in the received mail.

  The chunk search unit 520 may search for one or more chunks by identifying contents for sorting a previous mail attached to the mail when the mail is replied or forwarded.

  One or more chunks may be in an inclusive relationship. That is, the nth chunk among the one or more chunks may include the (n-1) th chunk. Here, n is the number of one or more chunks.

  The chunk registration unit 530 may perform the above-described steps S430, 440, and 450.

  For example, the chunk registration unit 530 may register a chunk that does not exist in the chunk collection 550 among the one or more chunks in the chunk collection 550.

  The chunk registration unit 530 may associate the received mail identifier with each of one or more chunks in the chunk collection 550.

  The chunk registration unit 530 may register, in the chunk collection 550, chunks that do not exist in the chunk collection 550 among one or more chunks for each of one or more chunks in descending order of chunk size. The identifier of the received mail may be associated with each of one or more chunks in the chunk collection 550.

  The chunk registration unit 530 may register a chunk that does not exist in the chunk collection 550 among the one or more chunks in the chunk collection 550 for each of the one or more chunks in ascending order of the chunk size. The identifier of the received mail may be associated with each of one or more chunks in the chunk collection 550.

  The chunk processing unit 540 may perform the above-described steps S460, 470, and 480.

  For example, the chunk processing unit 540 may index the contents additionally seen from the chunks included in the chunks registered in the chunk collection 550.

  The chunk processing unit 540 may provide a mail related to a registered chunk based on the indexed content as a search word search result. Here, the content that the registered chunk additionally has (that is, the unique string 340 of the registered chunk) includes a search term.

  The chunk processing unit 540 may provide an email related to the registered chunk as a search result by highlighting a portion corresponding to the search word.

  Further, the chunk processing unit 540 may automatically classify and provide a mail having the same chunk identifier 320 as that of the final mail with reference to the final mail.

  The chunk processing unit 540 may provide one or more mails including a search word to the user in a tree structure or the like based on the inclusion relation of the chunks with the final mail as a reference.

  Further, the chunk processing unit 540 may open the mail related to the specific mail read by the user. That is, when the user reads a specific mail, the chunk processing unit 540 can identify the previous mail whose contents are included in the specific mail by using the chunk collection 550. May be processed as being read by the user.

  The chunk collection 550 means the above-described chunk collection 300 and a database for storing and managing the above-described chunk collection 300.

  The technical contents according to the embodiment of the present invention described with reference to FIGS. 1 to 4 may be applied to the present embodiment as they are. Therefore, a detailed description of the technical contents described with reference to FIGS. 1 to 4 will be omitted below.

  The functions of components 520, 530, and 540 may be performed by a single controller (not shown). Here, the control unit may be a single or a plurality of chips, a processor, or a core. Each of the components 520, 530, and 540 may represent a function, library, service, process, thread, or module performed by the controller.

  The method according to an embodiment of the present invention may be realized in the form of program instructions capable of executing various processes via various computer means and recorded on a computer-readable recording medium. The computer readable recording medium may include one or a combination of program instructions, data files, data structures, and the like. The program instructions recorded on the medium may be specially designed and configured for the purposes of the present invention, and are well known and usable by those skilled in the computer software art. May be.

  As described above, the present invention has been described with reference to the limited embodiments and drawings. However, the present invention is not limited to the above-described embodiments, and any person having ordinary knowledge in the field to which the present invention belongs can be used. Various modifications and variations are possible from such an embodiment.

  Accordingly, the scope of the present invention is not limited to the disclosed embodiments, but is defined by the scope of claims and the equivalents of the scope of claims.

500 Chunk Processing Device 520 Chunk Search Unit 530 Chunk Registration Unit 540 Chunk Processing Unit 550 Chunk Collection

Claims (17)

searching for one or more chunks, each in an email containing an inclusive relationship with other chunks;
Registering, in the chunk collection, a chunk that does not exist in the chunk collection among the one or more chunks;
Associating an identifier of the email with each of the one or more chunks in the chunk collection;
An e-mail processing method comprising:   The step of searching for one or more chunks in the email includes identifying the content for distinguishing previously sent and received emails included in the email when the email is replied or forwarded. The e-mail processing method according to claim 1, wherein one or more chunks are searched.   3. The e according to claim 1, wherein an nth chunk of the one or more chunks includes an (n−1) th chunk, and n is the number of the one or more chunks. Mail processing method.   4. The method of claim 1, wherein the registering step and the associating step are performed for each of the one or more chunks in descending order or ascending order according to chunk size criteria. The email processing method according to any one of the preceding claims. The chunk collection includes a chunk string, the chunk identifier, one or more email identifiers associated with the chunk, and a unique string of the chunk,
The unique string of the chunk is content added in the chunk when the content of the chunk is compared with the content of a lower chunk. Email processing method.   6. The e-mail processing method according to claim 1, further comprising the step of indexing contents additionally included in the chunk registered in the chunk collection.   The method further includes providing an email related to the registered chunk as a search term search result based on the indexed content, and the content additionally included in the registered chunk includes the search term. The e-mail processing method according to claim 6.   The email processing method according to claim 7, wherein the email related to the registered chunk is provided as a search result with a portion corresponding to the search word highlighted.   9. A computer-readable recording medium storing a program for performing the e-mail processing method according to any one of claims 1 to 8. A chunk collection for storing one or more chunks and data associated with the chunks;
a chunk search unit for searching for one or more chunks each in the email being inclusive of other chunks;
A chunk registration unit that registers, among the one or more chunks, a chunk that does not exist in the chunk collection, and associates an identifier of the email with each of the one or more chunks in the chunk collection;
An e-mail processing apparatus comprising:   The chunk search unit searches the one or more chunks by identifying contents for distinguishing previously sent / received emails included in the email when the email is replied or forwarded. The e-mail processing apparatus according to claim 10.   12. The e of claim 10, wherein the nth chunk of the one or more chunks includes the (n-1) th chunk, and n is the number of the one or more chunks. Mail processing device.   The chunk registration unit may include, for each of the one or more chunks, a chunk that does not exist in the chunk collection in the order of descending or ascending order based on the chunk size. The email processing apparatus according to any one of claims 10 to 12, wherein the email processing apparatus registers in a collection and associates an identifier of the email with each of the one or more chunks in the chunk collection. The chunk collection includes a chunk string, the chunk identifier, one or more email identifiers associated with the chunk, and a unique string of the chunk,
The unique string of the chunk is a content added in the chunk when the content of the chunk is compared with the content of a lower chunk. 14. Email processing device.   The e-mail processing apparatus according to any one of claims 10 to 14, further comprising a chunk processing unit that indexes contents additionally included in the chunks registered in the chunk collection.   The chunk processing unit provides an email related to the registered chunk as a search result based on the indexed content, and the registered chunk additionally includes the search word. The email processing apparatus according to claim 15, comprising:   The email processing apparatus according to claim 16, wherein the chunk processing unit highlights a portion corresponding to the search word and provides an email related to the registered chunk as a search result.