| 摘要 |
PROBLEM TO BE SOLVED: To provide a message transmission device, a message reception device, a message transmission program, a message reception program, and a message check method that can identify a mail from an unauthorized user while suppressing an increase of a load on a user.SOLUTION: An acquisition unit 41 obtains an operation characteristic in creation of a message. An addition unit 42 adds the obtained operation characteristic to the message. A mail client 40 transmits the message to which the operation characteristic has been added, to a destination of the message. |
