There is no invoice in my parcel

That is correct. We no longer include an invoice in your parcel for reasons of sustainability. This alone means that several thousand less trees have to be felled each year.

The invoice is attached to your confirmation e-mail as a PDF document which you can save in digital form. Of course you can also print out the invoice yourself at any time if you so wish. We would, however, ask that you consider whether it is absolutely necessary to do so.