Mahesh Chand,
I did not know you give me a message by starting a post here. I am sorry if the font of my signature is too big, and I've corrected it now. However, I have to say there are no guidelines in this forum as how we should set our signatures.
In addition, I have seen the link for submitting our ideas, and my concerned problem has mostly been already submitted by others, and I just vote it. By the way, I still want to mention that. The functionality I require is to receive email notifications when my involved cases are replied by others. I know that if I am the thread starter, and I will get email notifications if some others replied the thread.