You can only ship packages from post offices now or by scheduling pickup. Too much darknet drugs I guess. You can drop them in a bin at the post office, but you still have to go in and get on camera.

Surely most drugs could be sold in small enough envelopes that you don't need parcel postage. I know when I was using DNMs most packages were a simple large letter stamp stamp which covers 35.3cm x 25cm x 2.5cm and a maximum weight of 750g. So I doubt dark net drug orders would have been the trigger for this sort of change.