How to make a feedback form in the full and short news (DLE)?

Question

DLE

Good afternoon, I want to organize a simple trading platform on DLE and I need to make an order button, but it’s tedious to make it so that in the message that will come to the mail it will be displayed on which news the button was pressed. Who can help with the solution of this problem, please respond, it is very necessary, I searched a lot on the Internet and did not find anything like that.
well, or the second option is to organize such a button only in the full news, then, I think, you can already make it just {title} in the message, but I still don’t understand how to do it. I'm new to programming, so try to be as detailed as possible, thanks a lot! I'm waiting for your help!