CN102567274A - Method and system for realizing transfer of mail data between mobile terminal and computer - Google Patents

Abstract

The present invention provides a method for transferring mail data between a mobile terminal and a computer, comprising: detecting the connection state between the mobile terminal and the computer; when the mobile terminal and the computer are in the connected state, obtaining mail data Transfer instruction, and determine the transfer direction of the mail data according to the mail data transfer instruction, the mail data transfer direction includes transferring from the mobile terminal to the computer and from the computer to the mobile terminal; select the mail data, and according to the mail data In the direction of transfer, the mail data is transferred from the transfer-out terminal to the receiving terminal and saved. Correspondingly, the present invention also provides a system capable of implementing the method. The invention can effectively realize the two-way transfer of the mail data between the mobile terminal and the computer, and satisfies the diversity of user requirements.

Description

Method and system for realizing transfer of mail data between mobile terminal and computer

technical field

The invention belongs to the communication field, and in particular relates to a method and a system for realizing transfer of mail data between a mobile terminal and a computer.

Background technique

Email plays a pivotal role in modern day-to-day life and work. On the desktop system of the computer, there are already countless email clients. At the same time, in the coming mobile Internet era, the email client of the mobile terminal will also play a role closely related to the user.

The existing mail data import method is: detect the connection status between the mobile terminal and the computer; when it is detected that the mobile terminal is connected to the computer, the mobile terminal sends a mail data request command to the computer and receives the mail access status sent by the computer, and obtains the current status of the mobile terminal. Existing mail data, sending keywords of the existing mail data in the mobile terminal, the computer screens the current mail data and sends the screened mail data to the mobile terminal, and the mobile terminal receives and stores the screened mail data.

During the research and practice of the prior art, the inventor found that: the above method realizes transferring the mail data of the computer to the mobile terminal, but it can only transfer the mail data from the computer side to the mobile terminal. Or in a specific environment, the diversity of user needs cannot be met, causing inconvenience to users.

Contents of the invention

In order to solve the technical problem in the prior art that mail data can only be imported from a computer to a mobile terminal, the present invention provides a method for transferring mail data between a mobile terminal and a computer. Two-way transfer between terminals meets the diversity of user needs and is easy to use.

The embodiment of the present invention is implemented in the following way, a method for transferring mail data between a mobile terminal and a computer. The method comprises the steps of:

detecting the connection status between the mobile terminal and the computer;

When the mobile terminal and the computer are in a connected state, the mail data transfer instruction is obtained, and the mail data transfer direction is determined according to the mail data transfer instruction, and the mail data transfer direction includes transfer from the mobile terminal to the computer and from the computer transfer to a mobile terminal;

Select the mail data, and according to the transfer direction of the mail data, transfer the mail data from the transferring terminal to the receiving terminal and save it.

Another object of the embodiments of the present invention is to provide a system for transferring mail data between a mobile terminal and a computer. The system includes:

The detection module is used to detect the connection status between the mobile terminal and the computer;

An acquisition module, configured to acquire an email data transfer instruction;

The judging module determines the transfer direction of the mail data according to the mail data transfer instruction acquired by the acquisition module, that is, determines whether the mail data is transferred from the mobile terminal to the computer or from the computer to the mobile terminal;

The selection module is used to provide a screening instruction input window, or provide a preset filtering rule window, and filter the mails in the transfer-out terminal according to the filtering instruction currently input by the user or the preset filtering rules;

The transfer module transmits the mail data from the transfer-out terminal to the receiving terminal according to the direction determined by the judgment module;

The storage module is used for storing the transferred mail data.

From the mail transfer scheme of the present invention, it can be seen that by receiving the mail data transfer instruction input by the user, and determining the mail transfer direction according to the mail data transfer instruction, the mail data transfer direction includes transferring from the mobile terminal to the computer and from the mobile terminal to the computer. The transfer of computers to mobile terminals has greatly enhanced the flexibility of mail transfers. Moreover, before transferring the mail data, the mail data to be transferred required by the user is first selected, so that the mail transfer method of the present invention is more flexible, meets the diverse needs of users, facilitates the use of users, and saves transmission time and network traffic at the same time .

Description of drawings

1 is a schematic flow diagram of a method for transferring mail data between a mobile terminal and a computer provided by an embodiment of the present invention;

2 is a schematic flow diagram of a method for transferring mail data between a mobile terminal and a computer provided by another embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a system for transferring mail data between a mobile terminal and a computer provided by an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to FIG. 1, a method for transferring mail data between a mobile terminal and a computer according to an embodiment of the present invention will be described below.

Fig. 1 is a kind of method that realizes the transfer of mail data between mobile terminal and computer that the embodiment of the present invention provides, and described method comprises the following steps:

S101: Detect the connection status between the mobile terminal and the computer.

The detection method may be: the mobile terminal sends a connection query command to the computer, and requests the computer to return a confirmation command, and if the mobile terminal receives the confirmation command from the computer within a specified time, it means that the two are connected. It can be understood that the detection methods in the above examples are not intended to limit the present invention.

S102: When the mobile terminal is connected to the computer, acquire an email data transfer instruction, and determine the email data transfer direction according to the email data transfer instruction.

In one embodiment of the present invention, when the mobile terminal is connected to the computer, the user interface of the mobile terminal outputs options for the transfer direction of the mail, and the above options include the first option of transferring from the mobile terminal to the computer and transferring from the computer to the mobile terminal. For the second option of the terminal, the user can select by operating the buttons of the mobile terminal or by directly touching the corresponding option on the mobile terminal, and determine the mail transfer direction according to the instruction input by the user. Of course, the above operations can also be performed on a computer, or can be completed simultaneously on the mobile terminal and the computer, which is not limited here. Since the above-mentioned mail data transfer instruction can be input on the mobile terminal or on the computer, it can greatly facilitate the user's operation.

The above determination of the transfer direction of the mail data is to determine whether the mail data is transferred from the mobile terminal to the computer or from the computer to the mobile terminal according to the mail data transfer instruction input by the user. In the embodiment of the present invention, the party that transfers the mail data is called the transfer-out terminal, and the party that receives the mail data is called the receiving terminal.

S103: Select the mail data, and according to the transfer direction of the mail data, transmit the mail data from the transfer-out terminal to the receiving terminal and store them.

In an embodiment of the present invention, the mail data in the transfer-out terminal may be screened according to the screening instruction currently input by the user or the screening rules pre-stored in the mobile terminal or computer.

In an embodiment of the present invention, the above screening instructions or screening rules may include the first type and the second type. Among them, the first category includes selecting any one of transferring the entire email, transferring the body of the email, and transferring the attachment of the email. The second category includes choosing one or more of the following:

The "Subject" line contains the specified words;

The "From" line contains the specified user;

The "To" line contains the specified user;

The "cc" line contains the specified user;

The mail is from the specified account;

email security;

The time of receipt corresponds to the specified time or period of time;

The mail size meets the specified range;

Mail marked as high priority.

In an embodiment of the present invention, the first type of screening instruction or screening rule and the second type of screening instruction or screening rule can be used separately and independently.

In an embodiment of the present invention, the first type of screening instruction or screening rule and the second type of screening instruction or screening rule may be used in combination. For example, if you select "Transfer email attachments" in the first category, and then select "If the email is marked as high priority" in the second category, it is equivalent to selecting the attachment of the email marked as high priority. Those skilled in the art can make modifications without departing from the principle or purpose of the present invention.

In the embodiment of the present invention, the method for transferring mail data between the mobile terminal and the computer is to receive the mail data transfer instruction input by the user, and determine the mail transfer direction according to the mail data transfer instruction, and the mail data transfer direction includes from mobile The transfer from the terminal to the computer and from the computer to the mobile terminal greatly enhances the flexibility of mail transfer. Moreover, before transferring the mail data, the mail data to be transferred required by the user is selected first, so that the mail transfer method of the present invention is more flexible, meets the diverse needs of users, facilitates the use of users, and saves time and network traffic at the same time.

On the basis of the above embodiments, another method for transferring mail data between a mobile terminal and a computer is provided. As shown in Figure 2, the above method includes step S201: detecting the connection state between the mobile terminal and the computer; and step S202: when the mobile terminal and the computer are in the connection state, obtain the mail data transfer instruction, and transfer according to the mail data An instruction to determine the transfer direction of the mail data. The method further includes the steps of:

S203: If the filtering instruction or filtering rule of the selected email data is to transfer the entire email, execute step S204; if not, execute step S206;

S204: transfer the entire mail, and execute step S205;

S205: Store the above mail data in the first storage area;

S206: Determine whether the filtering instruction or filtering rule for selecting mail data is to transfer the text of the mail, or transfer the attachment of the mail, and if so, execute step S207;

S207: Process the mail data to form Multipurpose Internet Mail Extended MIME mail data, obtain encoded mail text data or mail attachment data according to the domain information in the MIME mail data, and execute step S208;

Specifically, important contents such as basic information, format information, and encoding methods of MIME mail are recorded in various fields of the mail code, and each field is used to store various information related to the mail, such as the sender's name and The email address information is stored in the From field, and the recipient's email address information is stored in the To field. Get the complete email domain by querying RFC (Request for Comments, request for comment document). The basic format of the definition list domain: {domain name}: {content}, the domain is composed of the domain name followed by ":" plus the information content of the domain, a domain occupies one or more lines in the email, and the left side of the first line of the domain cannot With whitespace characters, such as spaces or tabs, subsequent lines of fields that occupy multiple lines must start with a whitespace character. The information content of the domain can also contain attributes, separated by ";", and the format of the attributes is as follows: {attribute name}="{attribute value}". Among them, the types and related attributes of the various contents contained in the mail can be obtained through the Content-Type field. Since the contents of different types in the MIME mail are stored in segments, the arrangement and location information of each segment can be obtained through the Content-Type The information in the field is used to define and obtain the message segmentation boundary through the boundary flag. For example, if the Content-Type is multipart/mixed, it means that an email contains attachments, and the attachment content and other contents of the email are divided into different segments through the boundary identifier defined in the multipart/mixed type; The picture will be used as the background of htm1, that is, for MIME mails that carry various attachments and other content as embedded resources, the above Content-Type can be set to multipart/related, defined in boundary The string serves as an identifier to divide the message content into different segments.

The following table 1 is a code snippet of a sample MIME email. The From field and To field record the information of the recipient and recipient of the email. The Subject field and Date field record the subject name of the email and the sending time information of the email. This example The Content-Type of the email is multipart/alternative, that is, there are both plain text and hypertext content in the email, and the content of the email is segmented through the string "----=_NextPart_000_0021_01CB9529.F910D9E0" defined in the boundary. Content- The specific encoding method used is recorded in the Transfer-Encoding field, and "Hi Jessica Howe you recently=A3=BF Yours Tom" is the email content information after the above encoding method.

Table 1

If the filtering rule is to transfer the email body, then this step transfers the encoded email text of "Hi Jessica How are you recently＝A3＝BF Yours Tom".

S208: Analyze the email body data or email attachment data received by the receiving terminal, and execute step S209;

In one embodiment, the above-mentioned parsing of the received email body data or email attachment data is to decode the email body data or email attachment data into a form that can be directly browsed by the user according to the encoding method in Content-Transfer-Encoding , such as parsing TXT type email body data into TXT text; parsing email attachments as pictures into JPEG format pictures, etc.

S209. Store the analyzed email data in a second storage area different from the first storage area.

In an embodiment of the present invention, the above-mentioned second storage area can be located in the same memory as the first storage area, of course, the above-mentioned second storage area can be located in different memory areas from the first storage area, for example, when mail data is transferred from When the computer is transferred to the mobile terminal, the first storage area is the area located in the internal memory of the mobile terminal, and the second storage area is the area set on the mobile terminal Secure Digital Memory Card (SDMC, SecureDigital Memory Card). Furthermore, the first storage area where the entire transferred email is stored may be the email data storage area of the receiving terminal. the entire email. The second storage area where the transferred mail body data and mail attachment data are stored can be other areas where data are stored in the receiving terminal, so that the user does not need to enter the mail of the receiving terminal when viewing the transferred mail text data and mail attachment data. The client side searches for the required information in a large amount of mail data, and finds the transferred mail data conveniently and quickly in the set second storage area. For example, when the transferred email attachment data is a multimedia file, the second storage area is a multimedia folder.

Furthermore, it can be further classified and stored according to the multimedia type of the transferred mail attachment data. For example, when the mail attachment data is a picture file, it is stored in the picture folder of the receiving terminal; when the mail attachment data is a sound file, the It is stored in the audio folder of the receiving terminal. In this way, the user can easily view the transferred mail data in the corresponding folder, which greatly facilitates the user's operation.

The existing mail data import method obtains the currently existing mail data of the mobile terminal, sends keywords of the existing mail data of the mobile terminal, and then the computer screens the current mail data and sends the filtered mail data to the mobile terminal. To a certain extent, the problem of repeated receipt of email data can be avoided, but the email data required by users cannot be effectively imported, and it is not convenient to use. And the method for realizing the transfer of the mail between the computer and the mobile terminal shown by the present embodiment is: by processing the mail data screened out to form MIME mail data, the mail text or mail attachment data encoded in the MIME mail is transmitted to the receiver terminal, and the receiving terminal parses the above-mentioned coded email body or email attachment to obtain the email body data and email attachment data. When the user only needs the email body information or email attachment in the original entire email, only the user The required information is transferred to the receiving terminal instead of transferring the entire mail data, which greatly facilitates the user's use, meets the various needs of the user, and makes the mail transfer method of the present invention more flexible. At the same time, only the information required by the user is transferred to the receiving terminal, which greatly reduces the amount of data transmission, further saves transmission time and network traffic, and is also convenient for the user to view, improving the efficiency of the user's mail processing.

Since the entire transferred email is stored in the first storage area, and the transferred email text data and email attachment data are stored in the second storage area, it is convenient for users to view according to the specific type of transferred data, and it is convenient to use.

Furthermore, an embodiment of the present invention also includes: prompting the user whether to display the mail text or mail attachments stored in the second storage area, and if the user chooses to display, then calling the corresponding software of the receiving terminal to display the mail data .

Referring to FIG. 3 , the system for implementing mail transfer between a mobile terminal and a computer according to an embodiment of the present invention will be described below.

As shown in FIG. 3 , the system 300 implemented according to the present invention includes a detection module 301 , an acquisition module 302 , a judgment module 303 , a selection module 304 , a transfer module 305 and a storage module 306 . This embodiment shows only the parts relevant to the present invention.

The detection module 301 is used to detect the connection state between the mobile terminal and the computer, and trigger the acquisition module 302 when the mobile terminal and the computer are in the connection state;

An acquisition module 302, configured to acquire an email data transfer instruction;

The judgment module 303 is connected to the acquisition module 302, and is used to determine the transfer direction of the mail data according to the mail data transfer instruction acquired by the acquisition module 302, that is, to determine whether the mail data is transferred from the mobile terminal to the computer or from the computer to the mobile terminal;

The selection module 304 is configured to provide a screening instruction input window, or provide a preset screening rule window, and filter the mails in the transfer-out terminal according to the screening instruction currently input by the user or the preset screening rules;

The transfer module 305, according to the direction determined by the judgment module 303, transmits the mail data from the transfer-out terminal to the receiving terminal;

The storage module 306 is connected to the transfer module 306 to store the mail data transferred by the transfer module 305 .

In an embodiment of the present invention, the screening instructions or screening rules in the selection module 304 may include two types, wherein the first type includes selecting any one of transferring the entire email, transferring the text of the email, and transferring the attachment of the email. The second category includes choosing one or more of the following:

The "Subject" line contains the specified words;

The "From" line contains the specified user;

The "To" line contains the specified user;

The "cc" line contains the specified user;

The mail is from the specified account;

email security;

The time of receipt corresponds to the specified time or period of time;

The mail size meets the specified range;

Mail marked as high priority.

In an embodiment of the present invention, the first type of screening instruction or screening rule and the second type of screening instruction or screening rule in the selection module 304 can be used separately and independently.

In an embodiment of the present invention, the first type of screening instruction or screening rule and the second type of screening instruction or screening rule in the selection module 304 may be used in combination. For example, if you select "Transfer email attachments" in the first category, and then select "If the email is marked as priority" in the second category, it is equivalent to selecting the attachment of the email marked as priority. Those skilled in the art can make modifications without departing from the principle or purpose of the present invention.

In the mail data transfer system between the mobile terminal and the computer in the embodiment of the present invention, when it is detected that the mobile terminal is connected to the computer, the mail data transfer instruction input by the user is received through the acquisition module 302, and determined according to the mail data transfer instruction. Mail transfer direction, the mail data transfer direction includes transfer from mobile terminal to computer and transfer from computer to mobile terminal, so that the flexibility of mail transfer is greatly enhanced. And before transferring the mail data, the mail data to be transferred required by the user is screened out in advance by the selection module 304, and then the mail data is transferred from the transfer-out terminal to the receiving terminal via the transfer module 305 according to the direction determined by the judgment module 303, Therefore, the mail transfer system of the present invention is more flexible, meets the diverse needs of users, facilitates the use of users, and saves time and network traffic at the same time.

On the basis of the above embodiments, the present invention provides another system for transferring mail data between a mobile terminal and a computer. The system further includes: a preprocessing module and an analysis module.

When the screening instruction or screening rule in the selection module is to transfer the mail body or transfer mail attachments, the preprocessing module processes the mail data to form Multipurpose Internet Mail Extension MIME mail data, according to the MIME mail data The field information is encoded email text data or email attachment data; at this time, the transfer module 305 is connected to the preprocessing module to transmit the email data from the transfer terminal to the receiving terminal according to the direction determined by the judgment module.

Specifically, important contents such as basic information, format information, and encoding methods of MIME emails are all recorded in various fields of the mail code, and each field is used to store various information related to the mail. Since different types of content in a MIME mail are stored in segments, the arrangement and position information of each segment can be defined through the information in the Content-Type field and the segment boundary of the mail can be obtained through the boundary identifier. According to the specific encoding method recorded in the Content-Transfer-Encoding field, and the email content segmentation mark defined by the boundary, obtain the email body data or email attachment data encoded according to the above encoding method.

The parsing module is connected to the transfer module 305. When the mail body data or mail attachment data processed by the preprocessing module is transferred to the receiving terminal side, the parsing module will convert the transferred mail text data according to the encoding rules of the previous preprocessing module. or email attachment data is analyzed, and the email body data or email attachment data is restored to a format that can be viewed by the user and then sent to the storage module for storage.

Specifically, the parsing module parses the received email body data or email attachment data by decoding the email body data or email attachment data according to the encoding method in Content-Transfer-Encoding to form data that can be browsed by users , such as parsing TXT type email body data into TXT text; parsing email attachments as pictures into JPEG format pictures, etc.

By processing the filtered email data to form MIME email data, the encoded email body or email attachment data in the MIME email is transmitted to the receiving terminal, and the receiving terminal parses the encoded email text or email attachment to obtain the email Text data and email attachment data, when the user only needs the email body information or email attachments in the original entire email, only the information required by the user can be transferred to the receiving terminal instead of transferring the entire email data, which greatly facilitates the user The use satisfies the diverse needs of users, making the mail transfer method of the present invention more flexible. At the same time, transferring the information required by the user to the receiving terminal greatly reduces the amount of data transmission, further saving transmission time and network traffic, and is also convenient for the user to view, improving the efficiency of the user's mail processing.

In an embodiment of the present invention, the storage module further includes a first storage unit and a second storage unit, wherein: the first storage unit is used to store the transferred email when the screening instruction or screening rule is to transfer the entire email the post-mail data; the second storage unit is used for storing the post-parse data parsed by the parsing module. In an embodiment of the present invention, the above-mentioned second storage area can be located in the same memory as the first storage area, of course, the above-mentioned second storage area can be located in different memory areas from the first storage area, for example, when mail data is transferred from When the computer is transferred to the mobile terminal, the first storage area is the area located in the internal memory of the mobile terminal, and the second storage area is the area set on the mobile terminal Secure Digital Memory Card (SDMC, Secure Digital Memory Card). Furthermore, the first storage area where the entire transferred email is stored may be the email data storage area of the receiving terminal. the entire email. The second storage area where the transferred mail body data and mail attachment data are stored can be other areas where data are stored in the receiving terminal, so that the user does not need to enter the mail of the receiving terminal when viewing the transferred mail text data and mail attachment data. The client side searches for the required information in a large amount of mail data, but finds the transferred mail data in the second storage area set up conveniently and quickly. For example, when the transferred email attachment data is a multimedia file, the second storage area is a multimedia folder. Furthermore, it can be further classified and stored according to the multimedia type of the transferred mail attachment data. For example, when the mail attachment data is a picture file, it is stored in the picture folder of the receiving terminal; when the mail attachment data is a sound file, the It is stored in the audio folder of the receiving terminal. In this way, the user can easily view the transferred mail data in the corresponding folder, which greatly facilitates the user's operation. Since the entire transferred email is stored in the first storage area, and the transferred email text data and email attachment data are stored in the second storage area, it is convenient for users to view according to the specific type of transferred data, and it is convenient to use.

In an embodiment of the present invention, the system further includes: a prompt display module, used to prompt the user whether to display the mail data stored in the second storage unit, and if the user chooses to display, call the receiving The corresponding software of the terminal displays the mail data.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (17)

1. A method for realizing mail data transfer between a mobile terminal and a computer, said method comprising the steps of: detecting the connection status between the mobile terminal and the computer; When the mobile terminal and the computer are in a connected state, the mail data transfer instruction is obtained, and the mail data transfer direction is determined according to the mail data transfer instruction, and the mail data transfer direction includes transfer from the mobile terminal to the computer and from the computer transfer to a mobile terminal; Select the mail data, and according to the transfer direction of the mail data, transfer the mail data from the transferring terminal to the receiving terminal and save it. 2. The method according to claim 1, wherein the mail data transfer instruction can be input on the mobile terminal or the computer. 3. The method according to claim 1, wherein the selecting mail data is to screen the mails in the transfer-out terminal according to the screening instruction currently input by the user or the preset screening rules. 4. The method according to claim 3, wherein the screening instruction or screening rule includes any one of transferring the entire email, transferring the text of the email, and transferring the attachment of the email. 5. The method according to claim 4, wherein the screening instructions or screening rules further include one or more of the following: The "Subject" line contains the specified words; The "From" line contains the specified user; The "To" line contains the specified user; Named users included in the "cc" line; The mail is from the specified account; email security; The time of receipt corresponds to the specified time or period of time; The mail size meets the specified range; Mail marked as high priority. 6. The method according to claim 4, wherein when the screening instruction or screening rule is to transfer the entire email, the step of saving is specifically: Store mail data in the first storage area. 7. The method according to claim 6, wherein, when the screening instruction or screening rule is to transfer the mail text or transfer the attachment of the mail, it further comprises: processing the mail data to form a Multipurpose Internet Mail Extension (MIME) For mail data, coded mail body data or mail attachment data is obtained according to domain information in the MIME mail data. 8. The method according to claim 7, wherein the step of saving is specifically: analyzing the mail body data or mail attachment data received by the receiving terminal, and storing the parsed mail data in A second storage area different from the first storage area. 9. The method according to claim 8, further comprising: prompting the user whether to display the email body or email attachments stored in the second storage area, and if the user needs to display, calling the corresponding software of the receiving terminal Display mail data. 10. A system for transferring mail data between mobile terminals and computers, characterized in that the system includes: A detection module, configured to detect the connection state between the mobile terminal and the computer, and trigger the acquisition module when the mobile terminal and the computer are in the connection state; An acquisition module, configured to acquire an email data transfer instruction; The judging module determines the transfer direction of the mail data according to the mail data transfer instruction acquired by the acquisition module, that is, determines whether the mail data is transferred from the mobile terminal to the computer or from the computer to the mobile terminal; The selection module is used to provide a screening instruction input window, or provide a preset filtering rule window, and filter the mails in the transfer-out terminal according to the filtering instruction currently input by the user or the preset filtering rules; The transfer module transmits the mail data from the transfer-out terminal to the receiving terminal according to the direction determined by the judgment module; The storage module is used for storing the transferred mail data. 11 . The system according to claim 10 , wherein the screening instruction input in the selection module or the preset screening rules include any one of transferring the entire email, transferring the text of the email, and transferring the attachment of the email. 12. The system according to claim 11, wherein the screening instructions input in the selection module or the preset screening rules further include one or more of the following: The "Subject" line contains the specified words; The "From" line contains the specified user; The "To" line contains the specified user; The "cc" line contains the specified user; The mail is from the specified account; email security; The time of receipt corresponds to the specified time or period of time; The mail size meets the specified range; Mail marked as high priority. 13. The system according to claim 11, wherein the storage module comprises: The first storage unit is configured to store the transferred mail data when the filtering instruction or filtering rule is to transfer the entire mail. 14. The system of claim 11, further comprising: A preprocessing module, configured to process the mail data when the screening instruction or screening rule is transferring the mail text or transferring mail attachments to form Multipurpose Internet Mail Extended MIME mail data, according to the MIME mail data in the The domain information is obtained from encoded mail body data or mail attachment data. 15. The system of claim 14, further comprising: The parsing module is configured to parse the email body data or email attachment data received by the receiving terminal. 16. The system according to claim 15, wherein the storage module further comprises: The second storage unit is used for storing the mail data parsed by the parsing module. 17. The system of claim 16, further comprising: The prompt display module is used to prompt the user whether to display the mail data stored in the second storage unit, and if the user needs to display, call the corresponding software of the receiving end to display the mail data.

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