| 摘要 |
In order to properly transmit a notification of prompting a user who has not logged in a network communication game or an SNS for a long time to that user, a terminal device (251) of a user management system (201) stores a friend user name, a login user name and a friend user name are reported to a management server device (231) at the time of login, the management server device (231) manages a report received at last for each transmission originator user name in association with a login time. When a login user name is specified as a friend user name in a past report of a friend user name specified in a new report, a login time of the friend user of the new report is notified to the terminal device (251), and when a difference between the login time of the friend user and a current time exceeds a predetermined threshold period, the terminal device (251) transmits an electronic mail of prompting the friend user to log in to a mail address of the friend user managed by the terminal device (251).
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