In one aspect, a communication device that sends mail including a destination address entry field, a subject entry field, and a message body entry field includes a controller that moves a character group entered in the destination address entry field or a character group entered in the subject entry field to the message body entry field if the character group satisfies a predetermined condition. If the predetermined condition is satisfied, the communication device determines that the character group presumed to be the message body of the mail has been entered in the entry field for the destination address or the subject of the mail, and moves the entered character group to the message body entry field.