do we have to put our signature in a message ?
Check the format for message writing on the following link
https://www.meritnation.com/cbse/class8/studymaterial/english/writing-section/message-writing/832_4465_11212#slide1_introduction
https://www.meritnation.com/cbse/class8/studymaterial/english/writing-section/message-writing/832_4465_11212#slide1_introduction