JPH05227202A - Mail transmitter-receiver - Google Patents

Abstract

PURPOSE:To utilize a memory effectively, to reduce the delay in the mail trans mission and to prevent waste of the communication charge. CONSTITUTION:An upper limit of a resident mail number, of a delay time and of a log-out time corresponding to each time zone is set in advance to a maximum resident number storage means 22, a maximum resident time storage means 24 and a maximum log-out time means 26. A log-in schedule time calculation means 25 adds a log-out time and a content of the maximum log-out time means 26 and stores the sum to a long-in schedule time storage means 27. A log-out means 30 makes log-in based on a mail resident number at a current time, a resident time, the current time and contents of the said storage means 22, 24, 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as a device for sending and receiving mails sent and received via a communication line. In particular, an email that automatically logs in to the mail center, automatically sends a mail waiting to be sent to the center staying in the transmitter / receiver, and automatically receives an email addressed to the transmitter / receiver staying in the center The present invention relates to a transmitting / receiving device.

[0002]

2. Description of the Related Art FIG. 2 is a system configuration diagram according to the present invention. In FIG. 2, 11 is a mail transmitting / receiving device, 12 is a network, and 13 is a center.

Conventionally, a mail transmission / reception device is a device for automatically logging in to a center (a) A device for logging in at a preset time (for example, a device realized by using the UNIX at command) (b) Logged out Devices that log in after a preset amount of time has passed (for example, UNIX
There is a device which is realized by using the sleep command of.

[0004]

However, in such a conventional mail transmitting / receiving apparatus, in the case of item (a),
If a large number of outgoing mails occur during the logout period, there will be insufficient memory to store outgoing mails.
The sent mail may stay within the preset time.If you have logged in for a long time as a result of sending a large amount of mail, you have just logged out, and the mail to send or the mail addressed to this device is Although there are few or few, there is a problem in that the user will be logged in at a preset time and the communication fee will be wasted.

In the case of item (b), since the login time interval cannot be set to a different value for each time zone,
Even in the nighttime period when the number of mails addressed to this device is small, the login time interval becomes the same as in the daytime period when the number of mails is large, and there is a problem that the communication fee is wasted.

The present invention solves the above problems.
Effectively use memory, reduce mail transmission delay,
Moreover, it is an object of the present invention to provide a mail transmitting / receiving device capable of preventing waste of communication charges.

[0007]

The first point of the present invention is to retain the number of emails waiting to be transmitted which are retained in the transmitted email retention means, and to retain the transmitted emails according to the time zone. A maximum staying number storage means for storing a staying number setting value preset as the upper limit value of the number of mails waiting to be sent, which is stored in the means, the measured value of the staying number measuring means, and the maximum staying number storage means And a staying number login means for logging in to the center and outputting the login notice when the measured value exceeds the staying number set value for the current time zone. Is characterized by.

A second aspect of the present invention is to send and receive mail to and from the center based on the input mail notification and a send mail holding means for temporarily storing the mail to be sent, and to output a send / receive end notification at the end of sending / receiving mail. In the mail transmission / reception apparatus including means and a logout means for logging out based on the transmission / reception end notification of the mail transmission / reception means and outputting a logout notification, a staying time for measuring the staying time of the mail waiting to be sent that stays in the sent mail staying means A time measuring means, a maximum staying time storing means for storing a staying time set value preset as an upper limit value of a staying time of a mail waiting to be sent, which stays in the sent mail staying means corresponding to a time zone; The measured value of the time measuring means and the retention time set value for the current time zone stored in this maximum retention time storage means Compare this measured value, characterized in that a residence time for the log-in means for outputting the login notification log to the center when it exceeds the residence time setting.

A third point of the present invention is to send and receive mails for temporarily storing sent mails and sending and receiving mails with the center based on the input login notification, and sending and receiving mails when the sending and receiving end is completed. Means and a logout means for logging out based on the transmission / reception end notification of the mail transmission / reception means and outputting a logout notification, in an email transmission / reception device, which is preset as an upper limit value of the time during which the logout state continues in correspondence with the time zone. The maximum logout time storing means for storing the set logout time setting value and the logout time setting value and the logout time in the current time zone stored in the maximum logout time storing means are added based on the logout notification of the logout means. This login result is output as the scheduled login time. A time calculation means and a scheduled login time storage means for storing the scheduled login time of the logout schedule calculation means, and the scheduled login time calculation means is switched out when the content of the maximum logout time storage means is switched. Means for adding the time set value and the current time, comparing the addition result with the planned login time stored in the planned login time storage means, and storing the earlier time in the planned login time storage means as the planned login time storage means. And a log-out time log-in means for logging in to the center and outputting the log-in notice when the current time reaches the planned login time stored in the planned login time storage means.

The above first to third points can be carried out individually or in combination. That is, only one set of the first to third points may be a combination of two sets and a combination of three sets.

[0011]

The function of measuring the number of staying mails measures the number of mails waiting to be sent, which are held in the mail sending mail holding means. The maximum retention number storage means stores a retention number setting value that is set in advance as the upper limit value of the number of emails waiting to be transmitted that are retained in the transmission email retention means in correspondence with the time zone. The staying number login means compares the measured value of the staying number measuring means with the staying number set value in the current time zone stored in the maximum staying number storage means, and when this measured value exceeds this staying number set value Log in to the center and output the login notification to the email sending / receiving means.

As described above, the staying number set value can be changed according to the time zone, and the accumulation of mails exceeding the staying number set value can be prevented and the memory can be effectively used.

Further, the staying time measuring means measures the staying time of the mail waiting to be sent which stays in the sent mail staying means. The maximum retention time storage means stores a retention time setting value that is set in advance as an upper limit value of the retention time of the mail waiting to be transmitted that is retained in the transmission mail retention means in correspondence with the time zone. The dwell time login means compares the measured value of the dwell time measuring means with the dwell time set value of the current time zone stored in the maximum dwell time storage means, and when this measured value exceeds this dwell time set value Log in to the center and output the login notification to the email sending / receiving means.

As described above, it is possible to change the staying time set value according to the time zone, prevent the staying of the mail exceeding the staying time set value, and reduce the delay of mail transmission.

Further, the maximum logout time storage means stores a logout time set value preset as an upper limit value of the time elapsed in the logout state corresponding to the time zone. The planned login time calculating means adds the logout time set value in the current time zone stored in the maximum logout time storing means and the logout time based on the logout notification of the logout means, and outputs the addition result as the planned login time. The scheduled login time storage means stores the scheduled login time of the logout schedule calculation means. When the contents of the maximum logout time storage means are switched, the scheduled login time calculation means adds the switched logout time set value and the current time, and the addition result and the scheduled login time stored in the scheduled login time storage means are added. The earliest time is compared and stored in the scheduled login time storage means as the scheduled login time. The log-out time log-in means logs in to the center and outputs a log-in notice to the mail transmitting / receiving means when the current time reaches the scheduled login time stored in the scheduled login time storage means.

As described above, the logout time set value can be changed according to the time zone, and the mail addressed to this device can be prevented from staying in the center for more than the logout time set value. Also, because a large amount of mail has been sent, the login status will be longer, and the time between logging out and the next login will be shorter, so there is no mail to send or mail to this device (or few).
Nevertheless, you can avoid the waste of logging in again.

[0017]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a mail transmitting / receiving apparatus according to an embodiment of the present invention.

In FIG. 1 and FIG. 2, the mail sending / receiving device sends / receives mails via the network 12 between the sending mail staying means 33 for temporarily storing the sent mails and the center 13 based on the input login notification. The mail transmission / reception unit 29 outputs a transmission / reception end notification at the end of transmission / reception, and a logout unit 30 including a logout execution unit 31 for logging out based on the transmission / reception end notification of the mail transmission / reception unit 29 and a logout notification unit 32 for outputting a logout notification.

Here, the features of the present invention are that the staying number measuring means 21 for measuring the number of mails waiting to be sent that stays in the sent mail staying means 33 and the sent mail staying means 33 corresponding to the time zone. The maximum retention number storage means 22 that stores a retention number setting value preset as the upper limit value of the number of emails waiting to be transmitted, and the measurement value of the retention number measurement means 21 and the maximum retention number storage means 22 are stored. A staying number login means 28A for comparing the staying number set value in the time zone at the current time and logging in to the center 13 and outputting the login notice when the measured value exceeds the staying number set value, and , Staying time measuring means 23 for measuring the staying time of the mail waiting to be sent which stays in the sent mail staying means 33
And a maximum staying time storage means 24 for storing a staying time setting value preset as an upper limit value of the staying time of the mail waiting to be sent which stays in the sent mail staying means 33 corresponding to the time zone, and the staying number measuring means. When the measured value of 1 is 1 or more, the measured value of the dwell time measuring means 23 is compared with the dwell time setting value of the current time zone stored in the maximum dwell time storing means 24, and this measured value is set to this dwell time setting. A log-in means 28B for staying time that logs in to the center 13 and outputs the above-mentioned log-in notification when the value exceeds the value, and further, logout preset as an upper limit value of the time during which the logout state continues in correspondence with the time zone. The maximum logout time storage means 26 for storing the time set value, and the maximum logout time storage means 26 based on the logout notification of the logout means. It adds the logout time settings and logout time of the time zone of the current time login estimated time calculation means 2 and outputs the sum as a login scheduled time
5 and a planned login time storing means 27 for storing the planned login time of the logout schedule calculating means 25, and the planned login time calculating means 25 switches the logout time when the contents of the maximum logout time storing means 26 are switched. A means for adding the set value and the current time and comparing the addition result with the planned login time stored in the planned login time storage means 27 and storing the earlier time in the planned login time storage means 27 as the planned login time storage means 27. Including, the login means 28C for logout time is provided for logging in to the center 13 and outputting the login notification when the current time reaches the scheduled login time stored in the scheduled login time storage means 27.

The operation of the mail transmitting / receiving apparatus having the above configuration will be described. FIG. 3 is a flowchart showing the processing of the staying number login means of the mail transmitting / receiving apparatus of the present invention. FIG. 4 is a flowchart showing the processing of the residence time login means of the mail transmitting / receiving apparatus of the present invention. FIG. 5 is a flow chart showing the processing of the logout time login means section of the mail transmitting / receiving apparatus of the present invention. FIG. 6 is a flowchart showing the processing of the scheduled login time calculating means of the mail transmitting / receiving apparatus of the present invention. FIG. 7 is a diagram showing the contents of the maximum staying number storage means of the mail transmitting / receiving apparatus of the present invention.
FIG. 8 is a diagram showing the contents of the maximum residence time storage means of the mail transmitting / receiving apparatus of the present invention. FIG. 9 is a diagram showing the contents of the maximum logout time storage means of the mail transmitting / receiving apparatus of the present invention. FIG. 10 is a diagram showing a time transition of a transmitted mail and a received mail of the mail transmitting / receiving apparatus of the present invention.

In FIG. 3, the staying number login means 28
A compares the staying number of the outgoing mail measured by the staying number measuring means 21 with the staying number setting value of the maximum staying number storing means 22 in the current time zone (S31), and the measured value shows the staying number setting value. If it exceeds the limit, the user logs in to the center (S32). If not exceeded, after waiting for a certain period of time (S33),
The process from step S31 is repeated.

In FIG. 4, the residence time login means 2
8B checks whether the staying number of outgoing mails measured by the staying number measuring means 21 is 1 or more (S41), and when it is 1 or more, the staying time and the maximum staying time of the sent mails measured by the staying time measuring means 23 are stored. The stay time setting value of the time zone of the current time of the means 24 is compared (S42), and when the measured value exceeds the stay time setting value, the center 13 is logged in (S4).
3). If it does not exceed, or if the number of staying sent mails is "0", after waiting for a certain period of time (S4
4) The process from step S41 is repeated.

In FIG. 5, the login means 28C for the logout time has the current time as the scheduled login time storage means 27.
Check whether the time stored in is reached (S5
1) If yes, log in to the center 13 (S52). If not reached, after waiting for a certain period of time (S53), the processes from step S51 are repeated.

In FIG. 6, the scheduled login time calculating means 25 monitors whether there is a logout notification from the logout means 30 (S61). The logout time set value in the time zone and the current time are added (S62),
The added result is stored in the scheduled login time storage means 27 (S63).

Further, the scheduled login time calculating means 25 is
The switching of the time zones stored in the maximum logout time storage means 26 is monitored (S64), and when the switching is performed, the logout time set value and the current time of the maximum logout time storage means 26 in the time zone after the switching. And are added (S
65), the added result is compared with the time previously set in the scheduled login time storage means 27 (S66), and the earlier time is newly stored in the scheduled login time storage means 27 (S67). After waiting for a certain period of time (S6
8), the process from step S61 is repeated.

FIG. 10 shows a case of the setting example of FIGS.
After logging out at 10am, the email sent to the center was 16:10, 16:20, 16:40, 18
It is shown in the figure which shows the time transition of each value when it occurs at 30 minutes (represented by ∇) and the mail addressed to this device occurs at 15:20 and 17:05 (represented by ▼). The ♦ mark represents the switching time of the time zone registered in the maximum logout time storage means 26.

A is a diagram showing the time transition of the login state and the logout state, the solid line shows the login state,
The dotted line shows the logout status. B is a diagram showing a time transition of the scheduled login time stored in the scheduled login time storage unit 27. C is a diagram showing the change over time in the number of staying mails sent to the center 13 measured by the staying number measuring means 21. D is a diagram showing the change over time of the retention time of the mail transmitted to the center measured by the retention time measuring means 23. E is a diagram showing the time transition of the retention time of the mail addressed to this apparatus.

The operation will be described below with reference to FIG.
When the user logs out at 15:10, the scheduled login time calculating means 25 receives the logout notification from the logout means 30 (FIG. 6, S61). Therefore, the logout time setting corresponding to the time zone of the logout time in the maximum logout time storage means 26 is set. Value "50 minutes" and current time "15:10
Minutes "is added (Fig. 6, S62), and the addition result is" 16
The hour is stored in the scheduled login time storage means 27 (FIG. 6, S63).

At 16:00, the log-out time login means 28C logs in to the center 13 because the time stored in the scheduled login time storage means 27 has reached the current time (FIG. 5, S51). Figure 5, S5
3). Next, the mail transmission / reception device 11 transmits the transmission mail retained in the device, and receives the mail addressed to the mail transmission device 11 retained in the center 13. Further, the logout means 30 performs logout and notifies the login scheduled time calculation means 25 of the logout.

In this way, when the logout state has passed a predetermined time (50 minutes in this case) or more, the center 13
You will be logged in to. Therefore, the mail addressed to the mail transmission device 11 that occurs at 16:20 is received by the mail transmission / reception device 11 within 50 minutes (40 minutes).

When the outgoing mail occurs at 16:10 and 16:20, and further the outgoing mail occurs at 16:40, the staying number of the sending mail measured by the staying number measuring means 21 becomes "3". , The staying number login means 28A compares the staying number set value stored in the maximum staying number storing means 22 with the staying number set value in this time zone (S31 in FIG. 3), and the measured value exceeds the set value “2”, the center 13 is logged in (FIG. 3, S32), and mails are transmitted and received.

After this, the logout time is 16: 4.
If it is 2 minutes, the estimated login time calculation means 25
Receives a logout notification from the logout means 30 (FIG. 6, S61), and therefore the logout time set value “50 minutes” and the current time “16:42” corresponding to the time zone of the logout time in the maximum logout time storage means 26. ", And the result of the addition (17:32
"Minute" is stored in the scheduled login time storage means 27 (FIG. 6, S63).

At 17:00, the time zone registered in the maximum logout time storage means 26 is switched (S64 in FIG. 6), so the scheduled login time calculation means 25 causes the maximum logout time storage means in the switched time zone. The setting value "20 minutes" of 26 and the current time "17:00" are added (S65 in FIG. 6), and the addition result "17:20" and the time "17" stored in the scheduled login time storage means 27 are added. 32 hours "is compared (Fig. 6, S66), and the earlier time" 17:20 "is stored in the scheduled login time storage means 27 (Fig. 6, S67).

At 17:20, the current time has reached the time stored in the scheduled login time storage 27 by the login means 28C for logout time (FIG. 3, FIG.
S31), log in to the center 13 (FIG. 3, S32),
Send and receive email.

Assuming that the time of logout is 17:25, the user similarly logs in at 17:45 and sends and receives mail.

In this way, the log-in state is logged in at 16:00 when the logout state continues for 50 minutes, whereas the log-in is performed at 17:00 when it continues for 20 minutes. For this reason, the mail addressed to the mail transmission / reception device 11 generated at 17:05 will be sent within 20 minutes (15 minutes),
It is received by the mail transmitting / receiving device 11.

That is, the upper limit value of the time during which the logout state is continued can be changed according to the time zone.

If the logout time is 17:50, the processing of steps S61 and S62 shown in FIG. 6 is performed, and "18:10" is stored in the scheduled login time storage means 27.
Is stored (S63 in FIG. 6).

At 18:00, the time zone registered in the maximum logout time storage means 26 is switched (S64 in FIG. 6), so the scheduled login time calculation means 25 causes the maximum logout time storage means in the switched time zone. The logout time set value “2 hours” of 26 and the current time “18:00” are added (S65 in FIG. 6), and the result “20 o'clock” and the time “18” stored in the scheduled login time storage means 27 are added. "10: 00" (FIG. 6, S66), and the earlier time "18:10" is the scheduled login time storage means 2
Store in 7.

At 18:10, the current time has reached the time stored in the scheduled login time storage means 27 in the logout time login means 28C (FIG. 3, FIG.
S31), log in to the center 13 (FIG. 3, S32),
Sends and receives email. This is because the logout time setting value of the maximum logout time of 17:00 is “20 minutes”.

If the logged out time is 18:15, the scheduled login time calculating means 25 receives the logout notification from the logout means 30 (FIG. 6, S).
61), the logout time set value "2 hours" corresponding to the time zone of the logout time in the maximum logout time storage means 26 and the current time "18:15" are added (FIG. 6, S62), and the added result ""20:15" is stored in the scheduled login time storage means 27 (FIG. 6, S63).

Here, it is assumed that the outgoing mail occurs at 18:30. After 19:30, the staying time of the transmitted mail measured by the staying time login means 28B by the staying time measuring means 23 exceeds “1 hour”. The residence time login means 28B compares the residence time set value “1 hour” stored in the maximum residence time storage means 24 with the residence time set value of this time zone (FIG. 4, S42), and the measured value exceeds the residence time set value. Therefore, log in to the center 13 (FIG. 4, S4
3). In this way, when the mail retention time exceeds the retention time setting value (1 hour in this case), the user logs in to the center 13.

As described above, when the number of outgoing mails exceeds the preset upper limit value (holding number setting value), the user logs in, and even when there is no outgoing mail, the preset time (16:00) When the logout status continues, log in when the platform is 50 minutes and at 17:00 it is 20 minutes. Also, log in when the staying time of outgoing mail exceeds the preset upper limit (holding time set value).

That is, in this embodiment, the center is logged in such that the number of stays of the sent mail in the device, the staying time, and the duration of the logout state are within the set values. Also, these set values can be changed according to the time zone.

[0045]

As described above, the present invention has the following excellent effects. It is possible to prevent the accumulation of e-mails exceeding the retention number setting value and to effectively use the memory. There is no email to be sent or logged in at an appropriate interval between login times so that the time that outgoing mail stays in this device is within the retention time setting value. (Or It is possible to prevent the waste of login even though it is small. It is possible to prevent the accumulation of mail addressed to this device over the logout time set value and to reduce the delay of mail transmission. The staying number setting value, staying time setting value, and logout time setting value can be changed according to the time zone.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a mail transmitting / receiving apparatus according to an embodiment of the present invention.

FIG. 2 is a system configuration diagram relating to the mail transmitting / receiving apparatus of the present invention.

FIG. 3 is a flowchart showing a process of a staying number login means of the mail transmitting / receiving apparatus of the present invention.

FIG. 4 is a flowchart showing a process of a residence time login unit of the mail transmitting / receiving apparatus of the present invention.

FIG. 5 is a flowchart showing the processing of the logout time login means of the mail transmission / reception device of the present invention.

FIG. 6 is a flowchart showing the processing of a scheduled login time calculating means of the mail transmitting / receiving apparatus of the present invention.

FIG. 6 is a diagram showing the contents of a maximum staying number storage means of the mail transmitting / receiving apparatus of the present invention.

FIG. 8 is a diagram showing the contents of a maximum residence time storage means of the mail transmission / reception device of the present invention.

FIG. 9 is a diagram showing the contents of a maximum logout time storage means of the mail transmission / reception device of the present invention.

FIG. 10 is a diagram showing a time transition of a transmission mail and a reception mail of the mail transmission / reception device of the present invention.

[Explanation of Codes] 11 Mail Transmitter / Receiver 12 Network 13 Center 21 Staying Count Measuring Means 22 Maximum Staying Number Storage Means 23 Staying Time Measuring Means 24 Maximum Staying Time Storage Means 25 Login Scheduled Time Calculation Means 26 Maximum Logout Time Storage Means 27 Login Scheduled Time storage means 28A Staying number login means 28B Staying time login means 28C Logout time login means 29 Mail sending / receiving means 30 Logout means 31 Logout executing means 32 Logout notifying means 33 Sent mail staying means 34 Received mail storing means

[Procedure amendment]

[Submission date] December 11, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a mail transmitting / receiving apparatus according to an embodiment of the present invention.

FIG. 2 is a system configuration diagram relating to the mail transmitting / receiving apparatus of the present invention.

FIG. 3 is a flowchart showing a process of a staying number login means of the mail transmitting / receiving apparatus of the present invention.

FIG. 4 is a flowchart showing a process of a residence time login unit of the mail transmitting / receiving apparatus of the present invention.

FIG. 5 is a flowchart showing the processing of the logout time login means of the mail transmission / reception device of the present invention.

FIG. 6 is a flowchart showing the processing of a scheduled login time calculating means of the mail transmitting / receiving apparatus of the present invention.

FIG. 7 is a diagram showing the contents of a maximum staying number storage means of the mail transmitting / receiving apparatus of the present invention.

FIG. 8 is a diagram showing the contents of a maximum residence time storage means of the mail transmission / reception device of the present invention.

FIG. 9 is a diagram showing the contents of a maximum logout time storage means of the mail transmission / reception device of the present invention.

FIG. 10 is a diagram showing a time transition of a transmission mail and a reception mail of the mail transmission / reception device of the present invention.

[Explanation of Codes] 11 Mail Transmitter / Receiver 12 Network 13 Center 21 Staying Count Measuring Means 22 Maximum Staying Number Storage Means 23 Staying Time Measuring Means 24 Maximum Staying Time Storage Means 25 Login Scheduled Time Calculation Means 26 Maximum Logout Time Storage Means 27 Login Scheduled Time storage means 28A Staying number login means 28B Staying time login means 28C Logout time login means 29 Mail sending / receiving means 30 Logout means 31 Logout executing means 32 Logout notifying means 33 Sent mail staying means 34 Received mail storing means

Claims (3)

[Claims] 1. A sending mail holding means for temporarily storing mails to be sent, a mail sending / receiving means for sending / receiving mails to / from a center based on a login notification that is input, and outputting a sending / receiving end notification at the end of sending / receiving, and the mail sending / receiving. In a mail transmission / reception apparatus equipped with a logout means for logging out based on the transmission / reception end notification of the means and outputting a logout notification, a staying number measuring means for measuring the number of mails waiting to be sent that are held in the sent mail holding means, and a time period Corresponding to, the maximum retention number storage means for storing the retention number setting value preset as the upper limit value of the number of emails waiting to be transmitted retained in the transmission email retention means, and the measurement value of the retention number measurement means Compared with the retention time set value for the current time zone stored in the maximum retention time storage means, this measured value Mail sending and receiving apparatus according to claim logged into the center that a staying number login means for outputting the login notification when was e. 2. A sending mail holding means for temporarily storing mails to be sent, a mail sending / receiving means for sending / receiving mails to / from the center based on an input login notification, and outputting a sending / receiving end notification at the end of sending / receiving, and the mail sending / receiving. In a mail transmission / reception device equipped with a logout means for logging out based on the transmission / reception completion notification of the means and outputting a logout notification, a retention time measuring means for measuring the retention time of the transmission waiting email retained in the transmission email retention means, and a time A maximum retention time storage means for storing a retention time setting value preset as an upper limit value of retention time of the mail waiting to be transmitted and retained in the transmission mail retention means corresponding to the band, and a measurement value of the retention time measurement means And the retention time set value for the current time zone stored in the maximum retention time storage means Value mail sending and receiving apparatus characterized by comprising a residence time for the log-in means for outputting the login notification log to the center when it exceeds the residence time setting. 3. An outgoing mail holding means for temporarily storing outgoing mail, a mail sending / receiving means for sending / receiving mail to / from the center based on a login notification that is input, and outputting a sending / receiving end notification at the end of sending / receiving, and sending / receiving this mail. In a mail transmission / reception device equipped with a logout means for logging out based on the transmission / reception end notification of the means and outputting a logout notification, a logout time set value preset as the upper limit value of the time during which the logout state continues corresponding to the time zone is set. The maximum logout time storage means to be stored and the logout time set value for the current time zone stored in the maximum logout time storage means and the logout time are added based on the logout notification of the above logout means, and the addition result is scheduled to be logged in. A scheduled login time calculation means for outputting the time, A scheduled login time storage means for storing a scheduled login time of the logout schedule calculation means is provided, and the scheduled login time calculation means is configured to switch the logout time set value and the current logout time set value when the contents of the maximum logout time storage means are switched. The time is added, and the result of this addition is compared with the planned login time stored in the planned login time storage means, and the earlier time is stored as the planned login time in the planned login time storage means. Is equipped with a logout time login means for logging in to the center and outputting the login notification when the scheduled login time stored in the scheduled login time storage means comes.