Is digital receipt possible at DM Drogeriemarkt?

At Action and Netto, this is possible with their app. The digital receipt is a great feature; you no longer have to store it for ages and then search for it when you need it. Everything is digital in the app, everything is always with you.

I've recently started collecting Payback points and paying at DM with Payback Pay. So, basically, I scan my smartphone at the checkout, collect the points, and pay in one step, just like at Netto (only connected to PayPal).

But I can't find any digital receipts from DM anywhere? Why?

What do you think of digital receipts? Which stores do you use them at?