KR20090114344A - Server for Operating e-Mail Holded in Common - Google Patents

Abstract

PURPOSE: A server for operating a share mail is provided to share a share mail stored in a storage medium with at least one second client. CONSTITUTION: A reading unit(235) reads a share object mail corresponding to selection information of the share object mail that an interface unit receives. A storage unit(230) stores the read mail in a storage medium which stores only predetermined share mails. The shared mail processing unit shares the share mail stored in the storage medium with at least one second client.

Description

Server for Operating e-Mail Holded in Common}

Fig. 1 is a diagram briefly showing the functional configuration of a conventional mail system using a single mail server.

2 is a diagram illustrating a functional configuration of a mail server and a mail system for sharing mail using a storage medium for storing a shared mail according to an embodiment of the present invention.

3 is a diagram illustrating a functional configuration of a mail server and a mail system for sharing mail using a storage medium for storing a shared mail according to another embodiment of the present invention.

4 is a diagram illustrating a preferred mail sharing policy according to an embodiment of the present invention.

5 is a flowchart illustrating a process of storing a shared mail in a storage medium according to an embodiment of the present invention.

6 is a flowchart illustrating a process of storing a shared mail in a storage medium according to another exemplary embodiment of the present invention.

7 is a flowchart illustrating a process of sharing a shared mail stored in a storage medium to at least one or more second clients according to an embodiment of the present invention.

8 is an exemplary view of a portal site search page according to an embodiment of the present invention.

FIG. 9 is a preferred flowchart of a process for providing at least one second client with shared mail granted access according to an embodiment of the present invention.

10 is an exemplary view of a portal site login page according to an embodiment of the present invention.

11 is a flowchart illustrating a process of sharing and providing a shared mail to at least one second client by a client according to an exemplary embodiment of the present invention.

<Description of main parts of drawing>

200: mail server 205: MRA

210: Local MDA 215: MTA

220: letter box 225: interface unit

230: storage unit 235: reading unit

240: authentication unit 245: shared mailbox

250: shared mail processing unit 255: advertisement insertion unit

260: mail sharing policy 265: membership information

270: client terminal 275: remote MUA

280: web browser 285: instant messenger

290: communication program 300: mail selection policy

The present invention provides an interface unit for receiving selection information of one or more sharing target mails among mails sent to the outside through a client terminal, mails received from outside, and mail stored in a mailbox, and selection of sharing target mails received by the interface unit. At least one or more reading unit for reading a mail to be shared corresponding to the information, a storage unit for storing the read-out mail on a predetermined storage medium storing only a predetermined shared mail, and a shared mail stored in the storage medium. A shared mail operating server having a shared mail processing unit for sharing with a second client.

A mail (= e-mail) is a message transmitted through a computer communication network, or a message transmitted, which is created by a predetermined mail user agent (MUA) provided in a mail sending client terminal and at least one or more through a communication network. Received through an MTA and / or MDA to a mail server used by a mail receiving client and stored in an electronically implemented mailbox for the mail receiving client on the mail server, and through a predetermined MUA provided in the mail receiving client terminal. The mail is to be accessed at any time. Such a mail system is defined in the message handling system (MHS) of the International Telecommunication Union-Telecommunication standardization sector (ITU-T) Recommendation 400 series.

1 is a diagram briefly showing the functional configuration of a conventional mail system using a single mail server.

In particular, FIG. 1 illustrates a mail server and a mail system for receiving a predetermined mail through a single mail server according to the ITU-T Recommendation 400 series of standard message communication processing systems (MHS).

Referring to FIG. 1, a process of receiving a predetermined mail and checking the received mail by the mail receiving client is as follows.

The MTA provided in the mail server receives a predetermined mail from at least one or more other MTAs and / or MUAs through the Simple Mail Transfer Protocol (SMTP) communication protocol, and sends the received mail to another MTA by calling an MDA, or It is a program to deliver the mail to the mailbox of the receiving client.

When a predetermined mail is received, the MTA receives a local MDA through a system call if the mail receiving client address included in the header of the received mail is a mail receiving client in charge of the mail. Instructs the received mail to be stored in the mailbox of the mail receiving client, and conversely, if the mail receiving client address included in the header of the received mail is not the mail receiving client in charge of the mail, the mail is delivered to another MTA ( Forwarding).

The MDA provided in the mail server is a program used by the MTA to deliver a received mail to a mail receiving client, and is divided into a case of delivering the received mail to the outside and a case of delivering the received mail to the inside.

When the MDA delivers the received mail to the outside, each MDA exists according to a channel (eg, TCP, UUCP, etc.), and is driven by "/ bin / sh" in the case of UNIX. When the received mail is delivered internally, an MDA for storing the received mail in a mailbox of a mail receiving client is called a local MDA. For example, a program such as "procmail" or "/ bin / mail" in UNIX can be used. have.

Local MDA generally stores the incoming mail in the mailbox of a mail-receiving client on the local file system, optionally using a mail filter (e.g., a program that filters spam) that processes the mail. .

A mailbox is a storage medium that contains a predetermined format for storing mail. Since there is no unified standard format, you can define and use your own format. The method and the method of storing each mail in each directory as a separate file are used, and in most cases, a method of continuously appending to a single file is often used.

When a predetermined mail is received in the mailbox as described above, a mail receiving client corresponding to the recipient of the received mail should access the mailbox remotely through a remote MUA provided in the corresponding mail receiving client terminal. The server is equipped with at least one Mail Retrieval Agent (MRA) that includes a Post Office Protocol (POP) daemon and / or an Interactive Mail Access Protocol (IMAP) daemon.

The MRA is a program for the mail receiving client to remotely access the mailbox through a remote MUA. When a remote MUA provided in a mail receiving client terminal requests an incoming mail to the MRA, the MRA is provided in the mail server. Read / write access of the local file system accesses the mailbox, determines whether there is a mail to be delivered from the mailbox to the remote MUA, and extracts at least one mail from the mailbox if there is a mail to be delivered to the remote MUA. To transmit to the remote MUA. The latest version of the POP daemon is POP3, and the latest version of IMAP is IMAP4.

The remote MUA is a mail client program provided in the mail receiving client terminal. Examples of the MUA include the Outlook Express of Microsoft, Netscape Mail of Netscape, and UNIX. usr / ucb / mail ". Recently, there is a case of using a web browser including Microsoft's Internet Explorer as a remote MUA (for example, Web-based Mail).

The mail system is divided into several small mutually independent components as described above, because various kinds of systems can be obtained through various combinations of various components. Recently commercialized mail servers include a Dispatcher System, a Delivery Interface, a Retrieval Interface, an Authentication System, or a Mailbox Location Search component. A cluster-based mail system, which is further extended to the system, is used, and typical cluster-based mail systems include Duke University's shipping system, EtherLink Network's EtherLink system, Washington's Percupine system or UC Berkeley's NinjaMail system.

However, conventional mail servers and / or mail systems, whether in the form of a single mail server or in a cluster-based fashion, receive mail received by the MTA from another MTA or a given MUA (e.g., mail sent externally or received from outside). And / or access to mail stored in the mailbox via local MDA is only granted to the mail receiving client and / or mail sending client (e.g., mail stored in the sending mailbox), and at least one second client Access to mail is strictly restricted, and if at least one or more second clients access the mail received by the MTA, and / or the mail stored in the mailbox via a local MDA, this is illegal for unauthorized information systems. It is a hack to infiltrate or illegally gain unauthorized privileges.

As described above, in a conventional mail server and / or a mail system, at least one or more second clients strictly restricts access to mail received by the MTA and / or mail stored in a mailbox through a local MDA. It is intended to protect the privacy of the client that owns the mail, and at least one second client's access to the mail is essentially blocked.

An object of the present invention for solving the above problems is an interface unit for receiving the selection information of the mail sent to the outside through the client terminal, the mail received from the outside, one or more of the target mail of the mailbox stored mail; A reading unit for reading a sharing target mail corresponding to the sharing target mail selection information received by the interface unit, a storage unit storing the read reading mail in a predetermined storage medium storing only a predetermined sharing mail, and The present invention provides a shared mail management server having a shared mail processing unit for sharing a shared mail stored in a storage medium to at least one or more second clients.

Shared mail operation server according to the present invention, the interface unit for receiving the information sent from the outside through the client terminal, the mail received from the outside, the selection information of one or more of the target mail of the mail stored in the mailbox, and the interface A reading unit that reads the shared target mail corresponding to the additionally received sharing target mail selection information, a storage unit storing the read target mail on a predetermined storage medium storing only a predetermined shared mail, and a storage unit on the storage medium. And a shared mail processing unit configured to share the stored shared mail to at least one second client.

According to the present invention, when the one or more second client terminal is connected to provide a search word for searching for the shared mail, the second client by extracting the shared mail corresponding to the search word from the storage medium; Characterized in that provided to the terminal.

The apparatus may further include an authentication unit configured to authenticate access rights to the shared mail of the second client when the shared mail stored in the storage medium is shared and provided to the second client.

The apparatus may further include an advertisement insertion unit for inserting predetermined advertisement contents into the sharing target mail.

Hereinafter, with reference to the accompanying drawings and description will be described in detail the operating principle of the preferred embodiment of the present invention. However, the drawings and the following description shown below are for the preferred method among various methods for effectively explaining the features of the present invention, the present invention is not limited only to the drawings and description below. In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users or operators. Therefore, the definition should be based on the contents throughout the present title.

In addition, the preferred embodiment of the present invention to be carried out in the following to add the technical components constituting the present invention to a mail server and a mail system consisting of a single server as shown in Figure 1 to effectively describe the technical components constituting the present invention The technical characteristics of the present invention will be described, which is intended to help those skilled in the art to understand the technical characteristics of the present invention, and the technical elements constituting the present invention are clusters. It is possible to extend the description to the base mail server and the mail system, and the technical spirit of the present invention is determined by the claims of the present invention.

In addition, the preferred embodiment of the present invention described below is described as being provided in the mail server to the storage medium in order to efficiently describe the technical components constituting the present invention, it is common knowledge in the art Those skilled in the art will clearly understand that the storage medium may be provided on a network accessible from the mail server.

2 is a diagram illustrating a functional configuration of a mail server 200 and a mail system for sharing mail using a storage medium storing shared mail according to an embodiment of the present invention.

In particular, in FIG. 2, in the mail server 200 of a single server type including an MTA 215, a local MDA 210, a mailbox 220, and at least one MRA 205 as shown in FIG. , A mail received from another MTA 215 and / or from a given MUA to the MTA 215, and / or with a client corresponding to the owner of the mail stored in the mailbox 220 via the local MDA 210. The mail server 200 includes a component that acts to share at least one or more mails with at least one second client.

In the mail system of FIG. 2, the client terminal 270 includes a wired terminal (eg, a personal computer having a MUA for transmitting and receiving mail) and / or a wireless terminal (eg, a wireless terminal having a mail transmission / reception function). It is characterized by.

According to a preferred embodiment of the present invention, the client terminal 270 selects at least one or more mails to be shared among mails sent to the outside and / or mails received from the outside and / or mail stored in the mailbox 220. ; And a program for realizing the selected sharing target mail in a predetermined storage medium storing only the predetermined shared mail.

Referring to FIG. 2, a mail server 200 including a technology component for sharing at least one or more mails to at least one or more second clients may be used in addition to the mail server 200 components of FIG. 1. A storage medium storing mail; An interface for receiving selection information of at least one or more sharing target mail among mails sent from the client and / or mail received from the outside and / or mail stored in the mailbox 220 in cooperation with the client terminal 270. Part 225; A reading unit 235 for reading a sharing target mail corresponding to the sharing target mail selection information received by the interface unit 225; A storage unit 230 for storing the mail read by the reader 235 in a predetermined storage medium storing only a predetermined shared mail; And a shared mail processing unit 250 for sharing the shared mail stored in the storage medium to at least one or more second clients.

According to a preferred embodiment of the present invention, the mail server 200 authenticates the access right to the shared mail of the second client when providing the shared mail stored in the storage medium to at least one or more second clients It is preferable that the authentication unit 240 is further provided, and for this purpose, the mail server 200 is preferably provided with predetermined member authentication information for authenticating at least one second client.

According to a preferred embodiment of the present invention, the mail server 200 preferably further comprises an advertisement inserting unit 255 for inserting predetermined advertisement content in the mail to be shared, for this purpose, the advertisement inserting unit 255 is preferably associated with a database for establishing at least one advertisement content requested by a given client.

The storage medium may be provided in the mail server 200 or in a server on a wired / wireless network connected to the mail server 200 or in the client terminal 270. And / or the Sent Items 220, and / or Inbox 220, and / or Deleted Items 220, and / or Custom Mailboxes 220, and / or Shared Mailboxes provided in the client terminal 270 ( 245). Hereinafter, a storage medium for storing a mail to be shared is referred to as a shared storage medium for convenience of description.

The shared storage medium has a predetermined amount of mail compared to the conventional mailbox 220 (eg, the sent mailbox 220, and / or the inbox 220, and / or the deleted mailbox 220, etc.) storing the non-shared target mail. And a sharing policy 260, wherein the mail unique policy is set by the client terminal 270, and when a mail to be shared is stored in the shared storage medium, a specific client is given access rights to the mail to be shared. And / or specify a location where the shared mail is stored, and / or specify a shareable item (eg, a mail body, an attachment, etc.) of the shared mail, or share the shared mail. It is characterized in that it comprises a policy for specifying the period and / or the number of sharing, or limiting the age of the client to access the sharing target mail.

According to a preferred embodiment of the present invention, the mail received by the MTA 215 provided in the mail server 200 through another MTA 215 provided on the network, the client terminal sending a predetermined mail to the client The mail is created through the MUA provided in 270 and received by the MTA 215 of the mail server 200 through another MTA 215 provided in the other mail server 200, and the mail server 200. It is preferable to include the mail received by the mail receiving client corresponding to the existing mail account.

In addition, the mail received from the remote MUA (275) connected via a predetermined network connected to the mail server 200, the remote MUA (275) provided in the mail sending client terminal 270 connected to the mail server (200) It is created through, and sent to the other MTA 215 through the MTA (215) based on the Simple Mail Transfer Protocol (SMTP), or sent to at least one mail account existing in the mail server 200 It is preferable to include the mail.

According to a preferred embodiment of the present invention, the mail stored in the mailbox 220 through the local MDA 210, the mail server 200 among the mail received by the MTA 215 provided in the mail server 200 Mail stored in a predetermined mailbox 220 corresponding to a mail account existing in the mail server, and assigned to the mailbox 220 for a predetermined client corresponding to at least one mail account existing in the mail server 200. It is preferable to include the mail stored in the inbox 220, the outbox 220, the outbox 220, the deleted mailbox 220, and / or the user-defined mailbox 220.

The interface unit 225 may be a mail received by the MTA 215 from a different MTA 215 and / or a predetermined MUA from a client terminal 270 of a sending client sending a predetermined mail to a client, and / or the Characteristic information or data required for sharing at least one or more of the mails stored in the mailbox 220 to at least one or more second clients through the local MDA (210) is characterized in that the mutual transmission and reception.

Referring to FIG. 2 according to an embodiment of the present invention, the interface unit 225 may receive mail received from the client terminal 270 to the MTA 215 from the client terminal 270, and / or the local area. It is preferable to receive predetermined mail selection information for selecting a mail shared to at least one or more second clients among the mails stored in the mailbox 220 through the MDA 210, and / or by the mail selection information. It is preferable to receive predetermined information or data for storing the selected mail on the shared storage medium, and / or the predetermined information or data for providing the mail stored on the shared storage medium to at least one or more second clients. It is desirable to send and receive

According to a preferred embodiment of the present invention, a mail received by the MTA 215 via POP / IMAP, and / or stored in the mailbox 220 is provided with a remote MUA 275 provided in a given client terminal 270. A request is made to transmit a received mail to a client corresponding to the owner of the mail, and the MRA 205 provided in the mail server 200 is received from the mailbox 220 to the client in response to the request. In the process of extracting and transmitting and outputting the mail to the remote MUA 275 provided in the client terminal 270 through the POP / IMAP, the interface unit 225 outputs the mail to the remote MUA 275. And a predetermined mail selection interface for generating predetermined mail selection information for selecting mail to be shared with at least one second client among the clients. To receive the agent terminal 270, the predetermined message selection information generated by the above-mentioned message from the selected interface, and serves to provide the message selection information to the reading unit 235 is preferred.

Alternatively, in the case of the web mail using the web browser 280 provided in the predetermined client terminal 270, the web browser 280 is mail received by the MTA 215 through TCP / IP. And / or request to transmit a received mail to a client corresponding to the owner of the mail among the mails stored in the mailbox 220, and the mail server 200 responds to the request. Extracts and receives the mail received from the client from the web browser to the web browser 280 provided in the client terminal 270 through the TCP / IP, wherein the interface unit 225 is the web browser 280 A predetermined mail selection interface for generating predetermined mail selection information for selecting a mail to be shared with at least one second client from among the mails output to It is preferable to receive the predetermined mail selection information generated through the mail selection interface from the client terminal 270, and to provide the mail selection information to the reader 235. .

Alternatively, when the client terminal 270 is provided with a predetermined instant messenger 285 and / or a predetermined communication program 290 for receiving a predetermined mail from the mail server 200, the interface unit 225 A predetermined mail selection interface for generating predetermined mail selection information for selecting mail to be shared by at least one or more second clients among the mails transmitted and output to the instant messenger 285 and / or the communication program 290 And outputting, receiving predetermined mail selection information generated through the mail selection interface from the client terminal 270, and providing the mail selection information to the reader 235. It is preferable.

According to a preferred embodiment, the interface for selecting the mail that the interface unit 225 includes in the mail transmitted and output to the client terminal 270 is transmitted to the remote MUA 275, in the MUA Preferably, the mail is included in the mail in the form of a predetermined script, and when output to the web browser 280, the predetermined script and / or the web browser 280 that can be driven in the web browser 280 It is preferable to include HTML (HyperText Markup Language) and XML (eXtensible Markup Language) tags, and when output to the instant messenger 285 and / or the predetermined communication program 290, the instant messenger 285 and And / or associated with the mail in the form of a script and / or ActiveX Control that can be output from a predetermined communication program 290 To be sent is preferred.

The mail selection interface receives predetermined user input data from a predetermined input means (for example, a keyboard and / or a mouse) provided in the client terminal 270, reads the user input data, and reads the client terminal 270. It is preferable to generate the mail selection information by extracting predetermined identification information from the mail received and output as

According to another exemplary embodiment of the present invention, when the instant messenger 285 and / or the predetermined communication program 290 are pre-loaded with the mail selection interface, the interface unit 225 may be configured as the instant messenger 285. And / or a function of transmitting a predetermined script and / or an interface for selecting a mail in the form of an active ax control to the predetermined communication program 290 may be omitted.

The mail selection information received by the interface unit 225 from the client terminal 270 may specify at least one or more mails among mails received by the MTA 215 and / or mails stored in the mailbox 220. Information or data is included. For example, it is preferable that the mail selection information includes "Message-ID:" included in the mail header of the mail. The "Message-ID:" of the mail header may be a message even if the mail has the same subject and body. Since different unique information or data is allocated by the MUA and / or MTA 215 provided in the client terminal 270 at the time of dispatch, one mail among a plurality of mails can be easily specified and selected.

The reading unit 235 reads mail selection information received through the interface unit 225 to read at least one or more mails received from the MTA 215 and / or mail stored in the mailbox 220. Select at least one mail to share with the client, and / or read the selected mail from the MTA 215 and / or the mailbox 220.

Referring to FIG. 2 according to an exemplary embodiment of the present invention, the reader 235 passes through the interface unit 225 from the client terminal 270 to predetermined mail selection information (eg, the MTA 215). Received mail, and / or information for selecting and selecting at least one or more mails from mails stored in the mailbox 220), and read the received mail selection information to be received by the MTA 215, And / or select at least one mail to be shared to at least one or more second clients from among the mails stored in the mailbox 220.

When at least one mail to be shared with at least one second client is selected as described above, the reader 235 reads the mail to the MTA 215 and / or the mailbox 220. The reading method may include obtaining a memory address in which the selected mail is stored in the MTA 215 and / or the mailbox 220 through the mail selection information, accessing the memory address, a header, a body, and / Or read the attachment.

According to a preferred embodiment of the present invention, the reading unit 235 preferably reads the sharing target mail corresponding to the sharing target mail selection information from the MTA 215 and / or the MDA and / or the mailbox 220. In addition, the shared storage medium (eg, the shared mailbox 245) may be provided in the mail server 200 or in a server on a wired / wireless network connected to the mail server 200, or the client terminal 270. And / or the inbox 220, and / or the inbox 220, and / or the deleted mailbox 220 provided in the mail server and / or the client terminal 270, and / or It is preferable to correspond to the user defined mailbox 220, and / or shared mailbox 245.

The storage unit 230 stores the mail received by the reader 235 in the MTA 215 and / or a predetermined mail read from the mail stored in the mailbox 220 on the shared storage medium. The mail stored in the shared storage medium by the storage unit 230 is shared by at least one or more second clients by a predetermined mail sharing policy 260 set in the shared storage medium. It features.

According to a preferred embodiment of the present invention, the storage unit 230 is preferably stored in the shared storage medium while maintaining the structure of the mail read by the reader 235, the mail stored in the shared storage medium This sharing to the at least one second client is handled by the mail sharing policy 260 set on the shared storage medium.

According to a preferred embodiment, the mail sharing policy 260 may include a mail address and / or identification information (eg, at least one or more second clients for accessing the mail server 200) for the at least one or more second clients. ID / PW, or ID / PW temporarily created for the at least one second client to access the mail, and / or authentication information (eg, at least one or more read from an authentication server of a public key infrastructure). And a second client owned public key, or biometric information of at least one or more second clients, and / or access rights (eg, read or write rights) to the mail.

According to another exemplary embodiment of the present invention, when the storage unit 230 stores the mail read by the reading unit 235 on the shared storage medium, the storage unit 230 is configured on the shared storage medium in the sharing target mail. In addition to the mail sharing policy 260, if additional sharing attributes or more detailed sharing attributes are granted, the storage unit 230 partially changes the structure of the read mail and adds a predetermined sharing attribute. The storage medium may be stored in a shared storage medium, or stored in the shared storage medium in association with the mail and the added shared property.

The shared mail processing unit 250 may share the shared mail stored in the shared storage medium storing only the target mail, to at least one or more second clients, and share the shared mail in at least one or more second client terminals 270. When a search for a mail is requested, the shared mail is searched and the result is provided to the second client terminal 270 based on the mail sharing policy 260, or at least one second client terminal 270 is provided. In case of requesting transmission of the shared mail, it is preferable to extract the shared mail from the shared storage medium based on the mail sharing policy 260 and to provide the shared mail to the second client terminal 270.

According to a preferred embodiment of the present invention, the shared mail processing unit 250 provides at least one search term for searching for at least one or more shared mails by accessing at least one second client terminal 270 to a server. It is preferable to extract a predetermined shared mail corresponding to the data from the shared storage medium and provide the same to the second client terminal 270, and / or at least one or more second client terminals 270 access the server. When requesting the above-mentioned shared mail, it is preferable to extract predetermined shared mail corresponding to the connected second client information from the shared storage medium and provide the same to the second client terminal 270.

3 is a diagram illustrating a functional configuration of a mail server 200 and a mail system for sharing mail using a storage medium for storing a shared mail according to another embodiment of the present invention.

In particular, in FIG. 3, the mail server 200 of the single server type including the MTA 215, the local MDA 210, the mailbox 220, and at least one MRA 205 as shown in FIG. Mail received from another MTA 215 and / or a given MUA to the MTA 215 using a mail selection policy provided in the mail server 200, and / or the mailbox via the local MDA 210. The mail server 200 includes a technology component for sharing at least one or more mails among the mails stored in the 220 to the at least one or more second clients.

Referring to FIG. 3, a mail server 200 including a technology component for sharing at least one or more mails to at least one or more second clients may be used in addition to the mail server 200 component of FIG. 1. Storage medium for storing the; A reading unit 235 for reading a predetermined mail selection policy and reading a share target mail corresponding to the mail selection policy; A storage unit 230 for storing the mail read by the reader 235 in a predetermined storage medium storing only a predetermined shared mail; And a shared mail processing unit 250 for sharing the shared mail stored in the storage medium to at least one or more second clients.

According to a preferred embodiment of the present invention, the mail selection policy is applied to the shared storage medium from among the mails received by the MTA 215 and / or the MDA from the mail server 200 and / or the mails stored in the mailbox 220. As a rule for automatically selecting a mail to be shared, the reader 235 receives a predetermined mail from the MTA 215 and / or an MDA and / or stores a predetermined mail in the mailbox 220. At this point, it is determined based on the mail selection policy that the received and / or stored mail satisfies the condition of the share target mail, and if the received and / or stored mail corresponds to the share target, the MTA. It is preferable to designate the mail received in the 215 and / or the MDA and / or the mail stored in the mailbox 220 as the mail to be shared and read.

For example, the mail selection policy analyzes a header of mail received in the MTA 215 and / or MDA and / or mail stored in the mailbox 220, so that the mail address of the mail sender is the same as the mail recipient (for example, The mail as a shared mail, or the file format of the attachment included in the mail (e.g., the Multipurpose Internet Mail Extensions (MIME) type of the attachment is "Content-Type: video / mpeg). (E.g., a multimedia content file format corresponding to the "; &quot;) or &quot; a &quot; This rule specifies that the mail is to be shared.

4 is an illustration of a preferred mail sharing policy 260 in accordance with one embodiment of the present invention.

According to the present invention, the mail sharing policy 260 is characterized by setting a common sharing attribute for the shared mail stored in the shared storage medium, referring to Figure 4 according to a preferred embodiment of the present invention, The mail sharing policy 260 includes a search permission, a search keyword, a search item, an attachment search, an access permission, an access permission client, and a sharing amount.

The "search allowed" item of the mail sharing policy 260 is an item for setting at least one second client and / or client group to allow the search for the shared mail. In FIG. At least one second client which is capable of being set is "ALL", whereby all second clients can search for at least one or more shared mails stored in the shared storage medium. As another embodiment, if the "search allowed" item is "Restricted Friend-1chon", the second client capable of searching for at least one or more shared mails stored in the shared storage medium has a "one-town relationship" with the client. It is set as a restricted second client.

The "search item" item of the mail sharing policy 260 is used when the at least one or more second clients search for the shared mail stored in the shared storage medium in the mail server 200 (or search server). As an item for setting an item to be included in a search target, in FIG. 4, an item corresponding to a search of at least one or more second clients is a From, To, Cc, or BCC. ), Subject, Mail Body, and Attachment. Therefore, when at least one predetermined second client searches for the shared mail stored in the shared storage medium through the mail server 200 (or the search server), the shared mail in which the search item is set as shown in FIG. Will search for all of the From, To, Cc, Bcc, Subject, Mail Body, and Attachments. In another embodiment, it is possible to limit an item included in a search object to a title and a body through the “search item” item.

The "attachment search" item of the mail sharing policy 260 is an item for setting a method of searching for the attachment file when an attachment is included in the search item set to the "search item". In case of 4, the file name, extension, and document of the attachment file of the shared mail are all searched. In particular, the search for the document of the attached file may include: the attachment file is a document file (e.g., a file whose extension is "* doc" or "* .hwp", or a header of the file is a predetermined word processor. In the case of a file which specifies that the file is generated through a file), a character or word included in the document file is included in the search and searched.

* "Access" item of the mail sharing policy 260 is an item for setting at least one second client and / or client group to allow access to the shared mail. In the case of FIG. 4, the shared mail is accessed. At least one second client capable of setting the at least one second client paying the sharing amount set in the shared mail, whereby at least one second client paying the sharing amount set in the sharing mail is A separate approval process (for example, a process of approving the at least one second client to access the shared mail by the client storing the shared mail on the storage medium) is omitted and is set to access remotely.

According to an exemplary embodiment of the present invention, in order to remotely access at least one or more second clients a predetermined shared mail stored in a shared storage medium as shown in FIG. 4, the remote mail is accessed (eg, the shared mail). It is possible to charge a predetermined amount (or points, electronic money) for the sharing of the shared mail from at least one second client provided with an attachment included in the mail.

The "Access Client" item of the mail sharing policy 260 designates or sets at least one or more second clients that are allowed to access the shared mail remotely. The mail sharing policy 260 included in FIG. When interpreting the contents, the mail stored in the shared storage medium is shared with at least one or more second clients corresponding to the mail address "yskim@sharemail.com" with read / write permission, and the at least one second The number of times a client accesses the mail is limited to three times, and is shared with at least one or more second clients corresponding to an e-mail address of “ykwon@sharemail.com” with read permission, and the at least one or more second clients Access to mail is limited to 10 times. That is, each time the at least one second client accesses the mail, the access frequency is decreased by 1, and when the access frequency is less than or equal to 0, the "<yskim@sharemail.com" message is displayed in the mail header. The string including "R | W: 3>;" is deleted, and of course, a string such as "<ykwon@sharemail.com: R: 10>;" may be described in the same manner as described above. Those skilled in the art will clearly understand the mail sharing policy 260.

According to another exemplary embodiment of the present invention, the mail sharing policy 260 may include at least one or more second clients that can remotely access the shared mail, including identification information other than the mail address. . For example, at least one or more allowed to remotely access the shared mail through a user account (ID) of the mail server 200 (or a web server associated with the mail server 200) instead of the mail address. A second client may be set up, or a social security number of at least one or more second clients or a cryptographic key of the at least one or more second clients (eg, publicly registered with a certification authority for at least one or more second clients in a public key infrastructure). Key) or at least one second client permitted to remotely access the shared mail via a predetermined one time password (OTP) / one time number (OTN), etc. generated for the at least one second client. It is possible to.

The “share amount” item of the mail sharing policy 260 may be used to share the shared mail (eg, provide an attachment included in the shared mail) to at least one second client remotely accessing the shared mail. The item is set to share the mail only with at least one second client who pays a predetermined amount (or points, electronic money), and in the case of FIG. 4, a predetermined amount (or points, electronic money) corresponding to "500". Set the mail to be shared only with at least one second client who pays).

According to the preferred embodiment of the present invention, as shown in FIG. 4, the items of the mail sharing policy 260 are the characteristics of the mailbox 220 and / or the database and the DBMS provided in the preferences of the operators implementing the present invention or the mail server 200. Various implementation methods may be derived according to the type of (Database Management System), and in addition to the mail sharing policy 260 items included in FIG. 4 according to the intentions and service methods of those skilled in the art. It is apparent that the mail sharing policy 260 may be further included. For example, it is possible to further include a mail sharing policy 260 that sets a period for which the shared mail is shared (= period for which the shared mail is stored on the shared storage medium), or to remotely access the attachment included in the shared mail. It is further possible to further include a mail sharing policy 260 that restricts the gender, age, etc. of the at least one second client (eg, restricting remote access of a female or minor if the attachment is adult).

According to the embodiment of the present invention, a predetermined target mail is designated and shared storage medium among the mails received in the MTA 215 and / or MDA and / or mail stored in the mailbox 220 in the mail server 200. How to store in the following. To this end, according to the present invention, a preferred method of transmitting and receiving predetermined information from a predetermined client terminal 270 and storing a shared mail, and storing a predetermined mail selection policy 300 in the mail server 200 and selecting the mail The preferred method of storing the shared mail through the policy 300 will be described separately. However, the technical spirit of the present invention is not limited to the above two methods, and includes all the implementation methods that can be inferred by those skilled in the art based on the embodiments of the present invention. It is characterized by.

5 is a flowchart illustrating a process of storing a shared mail in a storage medium according to an embodiment of the present invention.

In particular, FIG. 5 receives predetermined mail selection information from the client terminal 270 corresponding to the owner of the mail and selects the mail selection information for selecting at least one mail to be shared in the mail server 200. The present invention relates to a case in which at least one or more sharing target mails are designated and read and stored in a predetermined shared storage medium.

Referring to FIG. 5 according to a preferred embodiment of the present invention, a predetermined sharing target mail is designated by designating a predetermined sharing target mail among the mails received by the MTA 215 and / or the MDA and / or the mails stored in the mailbox 220. The process of storing in the medium may include the MTA 215 of the mail server 200 through a MUA, a web browser 280, an instant messenger 285, and / or a predetermined communication program provided in a predetermined client terminal 270. It is preferable to start by requesting 500 (or mail list) stored in the mail and / or mailbox 220 received by the mail server 200, according to another implementation method in the predetermined client terminal 270 May be initiated by transmitting predetermined information or data for generating predetermined mail selection information.

According to a preferred embodiment of the present invention, when a predetermined client terminal 270 requests the mail server 200 to receive the mail received in the MTA 215 and / or the MDA and / or the mail stored in the mailbox 220 ( 500, the mail server 200 stores mail (or a mail list) stored in the mail and / or mailbox 220 received by the MTA 215 and / or MDA to the client terminal 270 based on a predetermined protocol. The mail server 200 including the technical configuration of the present invention includes an interface for selecting mail in the mail transmitted to the client terminal 270 as described above, and outputs it to the client terminal 270. In operation 510, it is determined whether predetermined mail selection information for selecting mail to be shared is received from at least one second client from among the mails transmitted to the client terminal 270 (510).

If the predetermined mail selection information is not received from the client terminal 270 (515), the mail server 200 transmits at least one or more mails among the mails transmitted to the client terminal 270 at least one or more second clients. To end the process of sharing.

On the other hand, if predetermined mail selection information is received from the client terminal 270 (515), the mail server 200 reads the received mail selection information, and mail received by the MTA 215 and / or MDA. And / or selects at least one mail corresponding to the mail selection information among the mails stored in the mailbox 220 as the mail to be shared with the at least one second client (520).

When at least one mail to be shared is selected as described above, the mail server 200 may share the selected mail among mails received by the MTA 215 and / or MDA and / or mails stored in the mailbox 220. The mail is designated and read (525), and the read mail is copied or moved to a shared storage medium to which a predetermined mail sharing policy 260 is applied (530).

6 is a flowchart illustrating a process of storing a shared mail in a storage medium according to another exemplary embodiment of the present invention.

In particular, FIG. 6 illustrates a predetermined mail selection for sharing at least one or more mails among the mails received by the MTA 215 and / or the MDA and / or the mails stored in the mailbox 220 to the at least one second client. After the policy 300 is included in the mail server 200, the mail selection policy 300 may be shared with the at least one second client from the MTA 215 and / or the MDA and / or the mailbox 220. This is a case where at least one or more shared mails are read and stored in a shared storage medium.

Referring to FIG. 6 according to a preferred embodiment of the present invention, at least one or more of the mails received by the MTA 215 and / or the MDA and / or the mails stored in the mailbox 220 may be read to the shared storage medium. The storing process preferably begins with the receipt of a predetermined new mail to the MTA 215 and / or the MDA and / or the storage 600 of the predetermined new mail in the mailbox 220.

As described above, when a predetermined mail is received by the MTA 215 and / or the MDA and / or stored in the mailbox 220, the mail server 200 receives at least one or more mails among the mails, and at least one or more second clients. Extract a predetermined mail selection policy 300 for sharing with the client, read the mail selection policy 300 and receive it in the MTA 215 and / or the MDA and / or stored in the mailbox 220 In operation 610, it is determined whether there is at least one share target mail to be shared with at least one second client among the mails.

If it is determined that there is no mail to be shared to at least one or more second clients among the mails received and / or stored in the mailbox 220 through the MTA 215 and / or the MDA (615), the mail server 200 The method repeats a process of determining a mail to be shared among predetermined new mails received by the MTA 215 and / or MDA and / or stored in the mailbox 220 through the mail selection policy.

On the other hand, if it is determined that there is a mail to be shared to at least one or more second clients among the mails (615), the mail server 200 receives and transmits to the MTA 215 and / or MDA based on the mail selection policy. In operation 620, a mail to be shared to at least one or more second clients is selected from the mails stored in the mailbox 220.

When at least one mail to be shared is selected as described above, the mail server 200 may share the selected mail among mails received by the MTA 215 and / or MDA and / or mails stored in the mailbox 220. The mail is designated and read (625), and the read mail is copied or moved to a shared storage medium to which a predetermined mail sharing policy 260 is applied (630).

Hereinafter, a method of sharing at least one or more shared mails shared on the shared storage medium to at least one or more second clients through a shared mail operating method as shown in FIGS. 5 to 6 according to an exemplary embodiment of the present invention. .

To this end, in an embodiment of the present invention, the mail server 200 and a predetermined search server (for example, a portal site) interoperate with each other or have a function of searching for the shared storage medium in a predetermined search server, and then at least one or more. After the second client retrieves and shares at least one or more shared mails stored in the shared storage medium through the search server, and further comprises a predetermined instant messaging function in the mail server 200, The technical spirit of the present invention will be described through a preferred method of providing at least one shared mail stored in the shared storage medium by the mail server 200 to the instant messenger 285 of at least one second client. . However, the technical spirit of the present invention is not limited to the above two methods, and includes all the implementation methods that can be inferred by those skilled in the art based on the embodiments of the present invention. It is characterized by.

7 is a flowchart illustrating a process of sharing a shared mail stored in a storage medium to at least one second client according to an embodiment of the present invention.

In more detail, FIG. 7 has a function of interworking the mail server 200 and a predetermined search server or searching the shared storage medium with a predetermined search server, thereby sharing the shared storage medium with the search server. In a case where a function of retrieving stored one or more shared mails is provided, at least one or more second clients access the search server through a web browser 280 provided in a predetermined client terminal 270, and FIG. 8 When searching for at least one shared mail stored in the shared storage medium through a shared mail search function provided in the search server as in (a), and accessing a predetermined shared mail corresponding to the search result remotely It is about.

As shown in FIG. 8A, when at least one second client accesses a search server equipped with a search function for the shared storage medium through a web browser 280 provided in the client terminal 270 (700), The at least one second client inputs a search word for searching for at least one or more shared mails stored in the shared storage medium as shown in FIG. 8 through a predetermined search interface provided by the search server, and inputs a search word to the search word. A search for a corresponding shared mail is requested (705).

When the client terminal 270 requests a search for the shared mail shared on the shared storage medium through a predetermined search word, the search server searches for the shared mail stored on the shared storage medium (710).

Referring to (a) of FIG. 8 according to a preferred embodiment of the present invention, the at least one second client has not logged in to the search server, and as shown in FIG. 4, a mail sharing policy applied to the shared storage medium. If the "search allowed" item of 260 is set to ALL, the search server matches at least one shared mail matched with a search word input by the second client from among shared mails stored in the shared storage medium. It is desirable to search for. According to another exemplary embodiment, if the "search allowed" item of the mail sharing policy 260 applied to the shared storage medium is limited to the second client corresponding to the first relationship with the client, the search server stores the shared storage of the client. Preferably, the medium is not searched, and according to another exemplary embodiment, if the second client logs in to the search server, the search server reads the login information so that the second client has a first relationship with the client. It is preferable to search the shared mail stored in the shared storage medium based on the determination and the result of the determination.

If the shared mail corresponding to the search word input by at least one or more second clients does not exist in the shared mail search result after performing the shared mail search as described above (715), the search server performs the web browser 280. In operation 720, the shared mail search error message is transmitted to the client terminal 270 of the at least one second client.

On the other hand, if there is a shared mail corresponding to the search word input by the at least one second client in the shared mail search result, the search server uses the at least one through the web browser 280 as shown in (b) of FIG. The predetermined shared mail search result is transmitted to the client terminal 270 of the second client and output (step 725).

Referring to (b) of FIG. 8 according to a preferred embodiment of the present invention, a shared mail search result includes a title, contents, and a file name and capacity of an attached file. The web browser 280 is preferably transmitted to the client terminal 270 of at least one or more second clients according to the format. In the case of (b) of FIG. 8, the shared mail search result uses a search result format of a general search server, but a predetermined bulletin board format or web mail format may be used.

When the shared mail search result is transmitted and output to the client terminal 270 of at least one or more second clients as described above, the search server is included in the search result from the client terminal 270 of the at least one or more second clients. In operation 730, an access request for at least one shared mail is received from the shared mail.

If an access request for at least one shared mail from among shared mails included in the shared mail search result is received from the client terminal 270 of the at least one second client, the search server is configured to receive the at least one access request. The second client checks whether at least one prerequisite should be performed in order to access the shared mail requested to be accessed (740).

If the at least one second client needs to perform at least one prerequisite to access the shared mail (745), the mail server 200 performs the at least one predecessor according to a predefined manner. The second client performs at least one preceding procedure for accessing the shared mail (750).

According to one embodiment of the present invention, in order for the at least one or more second clients to access the shared mail, the client sharing the shared mail needs to be approved. In this case, the search server preliminarily performs a process of requesting the client to approve the at least one second client from accessing the shared mail.

For example, the search server may send a message or a message to the client requesting the at least one second client to approve access to the shared mail, or the mobile phone of the client (eg, a search server (or a mail server) 200) when the member information and the mobile phone number is registered) may transmit a message requesting that the at least one second client to approve access to the shared mail, in the technical field to which the present invention belongs Those skilled in the art will be able to infer implementation methods for the shared mail access approval process through various implementation methods in addition to the above-described implementation method, and the technical idea of the present invention is to share all kinds of analogies that can be inferred as described above. Includes how mail access is granted.

According to another exemplary embodiment of the present invention, in order for the at least one or more second clients to access the shared mail, a predetermined amount must be paid to the client who shared the shared mail. In this case, the search server preliminarily performs a predetermined payment process for the at least one second client to access the shared mail shared by the client.

For example, the search server performs a predetermined process of paying from the at least one second client to the client a payment amount and / or points corresponding to a predetermined sharing amount presented by the client, and the present invention belongs to. Those skilled in the art will be able to infer various types of shared mail sharing payment methods including credit card payment, online deposit payment or mobile phone payment or point payment, and the like. As described above, the method of executing shared payment of all kinds of inferred types is included.

The at least one second client completes at least one preceding procedure for accessing the shared mail shared by the client by the at least one second client, or the at least one second client performs the shared mail. If a prerequisite for accessing the server is not required (755), the mail server 200 (or the search server) may allow remote access to at least one shared mail requested by the at least one second client. And to the at least one or more second clients, the shared mail to which access rights are granted in a manner predefined by the mail server 200 and / or a client and / or in a manner requested by the at least one or more second clients. Share (760).

9 is a flowchart illustrating a process of providing a shared mail to which at least one second client is granted access according to an embodiment of the present invention.

In more detail, FIG. 9 illustrates shared mail in which access rights are granted to at least one or more second clients through the process of FIG. 7, and / or the client sets a predetermined mail sharing policy 260 on the shared storage medium. In the case of granting the access right to the at least one second client (for example, when a predetermined second client is included in the access permission client of the mail sharing policy 260), the second client is the mail In the case of accessing and logging in to the server 200 (or the search server associated with the mail server 200), the above-described case is provided with the at least one second client providing the shared mail to which the access right is granted. .

Referring to FIG. 9, at least one second client is connected to a search server (or mail server 200) through a web browser 280 provided in a predetermined client terminal 270 (900), and As shown in (a), the server logs in to the search server (or the mail server 200) through the web browser 280 (905).

When the login to the search server (or the mail server 200) is completed as described above (905), the search server (or the mail server 200) is the at least one second or more of the shared mail stored in the shared storage medium Check if there is at least one shared storage medium to which the client has been granted access for remote access (eg, registered in the "Access Client" of the mail sharing policy 260 required on the shared storage medium) (910). ).

If there is no shared storage medium accessible to the at least one second client in the verification process (915), the search server (or the mail server 200) has access to the at least one second client. The process of providing the given shared mail ends (of course, the conventional mail service or search service is normally provided).

On the other hand, if there is at least one or more shared mails accessible by the at least one second client in the checking process (915), the search server (or the mail server 200) is a share granted access rights to the second client. It is determined whether at least one shared mail is stored in the storage medium (920).

If at least one shared mail is not stored in the shared storage medium (= the shared storage medium to which the second client is granted access) (925), the search server (or the mail server 200) is the at least one. The process of providing the shared mail to which the second client is granted access is terminated.

On the other hand, if at least one or more shared mails are stored in the shared storage medium (925), the search server (or mail server 200) is the at least one through the web browser 280 as shown in (b) of FIG. A predetermined mail sharing message for confirming that there is a shared mail accessible to the client terminal 270 of the second client is generated and output (930).

When the mail sharing message is output to the client terminal 270 of the at least one or more second clients as described above (930), the at least one or more second clients are connected to the search server (or the mail server through the web browser 280). 200) request a predetermined mail access interface corresponding to the mail sharing message (935).

According to various embodiments of the present disclosure, the mail access interface may be output through the web browser 280 similarly to (b) of FIG. 8, and the mail selection policy of the search server (or the mail server 200) may be used. The search server (or the mail) when the mail access path predefined by the client or the client or at least one second client exists, or when the mail sharing message includes an interface for selecting at least one mail access path; The server 200 may output a predetermined mail access interface corresponding to the access path to the client terminal 270 of the at least one second client. For example, when the MUA or the instant messenger 285 provided in the client terminal 270 of at least one or more second clients is defined as the mail access path, the search server (or the mail server 200) may be configured as the client. The MUA or the instant messenger 285 provided in the terminal 270 outputs a mail access interface for accessing the shared mail to which the access right is granted to the at least one second client.

When the predetermined mail access interface is output to the client terminal 270 of the at least one second client as described above (940), the at least one second client is a search server (or a mail server) output to the client terminal 270. (200) to access at least one or more shared mails to which the access right is granted (step 945). For example, the at least one second client downloads an attachment included in the shared mail through the mail access interface.

11 is a flowchart illustrating a process of sharing and providing a shared mail to at least one second client by a client according to an exemplary embodiment of the present invention.

In more detail, FIG. 11 illustrates at least one or more access rights granted to a mail sharing policy 260 applied to a shared storage medium in a process of sharing and storing a predetermined shared mail on the shared storage medium. This is a case where an attachment included in the shared mail is shared and provided to the instant messenger 285 included in the client terminal 270 of the second client.

However, a method of sharing and providing a predetermined shared mail from a client to at least one second client may be implemented in various implementation methods (for example, the shared storage medium of the client in the mail server 200) in addition to the method described in FIG. A method of forwarding shared mail to a mail account of at least one second client from a forwarding server, and sharing or providing access to shared mail stored in a client's shared storage medium by the mail server 200. It is apparent that a method for generating and transmitting network connection information capable of being transmitted to at least one or more second clients and receiving and sharing the shared mail with reference to the network connection information from the at least one or more second clients may be provided. Do. In addition, in providing sharing of the shared mail from the client to at least one second client, various implementation methods (for example, sharing mail may be performed in addition to the implementation method of omitting the sharing mail access approval process as in the implementation method shown in FIG. 11). It is apparent that a method of obtaining real-time approval of a client in the process of providing sharing, or a method of obtaining approval using an OTP in the process of providing sharing of a shared mail) may be provided. As a result, the implementation method of the present invention 11 is only one exemplary implementation method for efficient description among various implementation methods included in the technical idea of the present invention, and the technical idea of the present invention is not limited to the case of the present invention 11 Will be obvious.

Referring to FIG. 11, a client accesses a mail server 200 through a web browser 280 (or MUA) provided in a client terminal 270 (1100), and at least one second client to the shared storage medium. By adding a mail sharing policy 260 that allows access of (in the case of Figure 11, the access authorization process is omitted in the process of providing a shared mail because the access rights are added to the mail sharing policy 260) At least one second client grants a predetermined access right to access the shared mail (1105), and sets a shared mail providing path for sharing the shared mail to the at least one second client (1110). ).

According to an embodiment of the present invention, a shared mail providing path for sharing and providing the shared mail to at least one second client is a path using a web browser 280 of at least one second client, a path using a MUA, and an instant. There may be a path using the messenger 285, and / or a path using a predetermined communication program 290. In FIG. 11, a shared mail providing path using the instant messenger 285 is used. Of course, when the shared mail providing path is fixed to a specific path, the process of setting the shared mail providing path as described above may be omitted.

If the shared mail providing path is not the instant messenger 285 (1115), the mail server 200 provides the shared mail to the at least one second client through the shared mail providing path set by the client. (1120).

On the other hand, if the shared mail providing path is an instant messenger 285 of at least one or more second clients (1115), the mail server 200 provides an instant messaging function (eg, the instant messenger 285 of at least one or more second clients). A function of transmitting an attachment of the main content through a communication port and a communication protocol to be used) (1125) and whether the at least one second client is currently using the instant messenger 285 through the instant messaging function. Determine (1130).

If the at least one second client is not currently using the instant messenger 285 (1135), the mail server 200 is used when the at least one second client uses the instant messenger 285 (e.g., In operation 1140, the at least one second client waits until the at least one second client executes the instant messenger 285 in the client terminal 270 to log in to the instant messaging network.

On the other hand, if the at least one second client is currently using the instant messenger 285 (1135), the mail server 200 extracts an attachment from a shared mail to be shared and provided to the at least one second client. In operation 11150, the attachment of the extracted shared mail is transmitted to the instant messenger 285 of the at least one or more second clients through the activated instant messaging function.

According to a preferred embodiment of the present invention, the method of transmitting the attachment of the shared mail to the instant messenger 285 may be based on a data transmission method based on a communication protocol provided in the instant messenger 285.

According to the present invention, a mail sent from a predetermined mail server to a predetermined mail receiving client and / or a mail received from a predetermined mail sending client to the mail server and / or a predetermined mailbox provided in the mail server. At least one of the mail previously stored in the) and / or the mail stored in the client end can be shared to at least one or more second clients.

Claims (4)

An interface unit for receiving selection information of one or more mails to be shared among mails sent to the outside through the client terminal, mails received from the outside, and mails stored in the mailbox;  A reading unit configured to read a sharing target mail corresponding to the sharing target mail selection information received by the interface unit; A storage unit which stores the mail read by the reader in a predetermined storage medium storing only a predetermined shared mail; And And a shared mail processing unit configured to share the shared mail stored in the storage medium to at least one or more second clients. The method of claim 1, wherein the shared mail processing unit, When at least one second client terminal accesses and provides a search word for searching for shared mail, the shared mail operation server extracting the shared mail corresponding to the search word from the storage medium and providing the search word to the second client terminal. . The method of claim 1, When the shared mail stored in the storage medium is shared and provided to the second client, the shared mail operating server, characterized in that further comprising an authentication unit for authenticating the access rights to the shared mail of the second client. The method of claim 1, Shared mail operation server, characterized in that further comprises an advertisement insertion unit for inserting predetermined advertising content in the sharing target mail.

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