Method for synchronizing messages among plurality of terminals, machine-readable storage medium, and server

A non-transitory machine-readable recording medium having recorded thereon a program for executing a method for synchronizing messages among a plurality of terminals, the method comprising:

• receiving a communication message from a first sending terminal;
• sending a message notifying reception of the communication message to a first receiving terminal that is not connected to the server, among receiving terminals mapped to a receiving account of the communication message;
• and
• sending the communication message to the first receiving terminal, when the first receiving terminal is connected to the server.

A server for synchronizing messages among a plurality of terminals, the server comprising:

• a communication module configured to communicate with the plurality of terminals;
• a storing unit configured to store accounts and information about terminals mapped to the respective accounts;
• and
• a controller configured to receive a communication message from a first sending terminal, send a message notifying reception of the communication message to a first receiving terminal that is not connected to a server among receiving terminals mapped to a receiving account of the communication message, and send the communication message to the first receiving terminal when the first receiving terminal is connected to the server.

A receiving terminal comprising:

• a communication module configured to communicate with a server;
• and
• a controller configured to:
• receive a message notifying reception of a communication message from the server which has received the communication message from a sending terminal;
• control a screen of the receiving terminal to display the message notifying reception of the communication message;
• control the communication module to connect to the server and receive the communication message from the server.