Why do I get an SMS and Email from NSE, BSE when I trade?

To keep a tab on any unauthorized stock market trading activities through your account, NSE, BSE, and MCX send emails or SMS alerts to inform you about the days on which trade transactions have occurred.

If you wish, you can also go to the NSE or BSE websites to verify your trades.

Refer to this notification from NSE, this link on BSE , and this circular on MCX to know more.