The present invention provides a message transmission system for each post-mortem and invited interrogation customer who can accurately know the time of death of the dead and promptly send a notification to the interrogation customer, and a post-mortem message transmission method using the same. According to an embodiment of the present invention, a message transmission system for each post-mortem and invited customer is connected to a member terminal 20 and a main server 10 via a wired or wireless network, and has a fixed relationship with the member terminal 20. In the message transmission system for each post-mortem and information regarding an emergency contact terminal 30 in which information on an emergency contact terminal 30 is registered in the main server 10, the member terminal 20 is a list of interrogation customers invited to the main server 10 as interrogation customers. The main server 10 grasps the death time of the member possessing the member terminal 20 through the member terminal 20 and the emergency contact terminal 30 and uploads a message to be transmitted to each customer. At the time of the death of the member who possesses the terminal 20, notification is sent to the customer terminal 40 registered in the customer list. Sending knowledge and sending a message at a specific point in time and invited guests to allow the member to perform the funeral procedure desired. [Selection] Figure 3
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