The German version allows you to send packages by putting them into an empty box in the Packstation. Same for the Austrian version. Deutsche Post also maintains so-called "Paketbox"es, which are only for sending stuff.
The Österreichische Post AG (Austria) is testing a new system where they install a couple of boxes right inside apartement buildings, typically next to the residents' post boxes. When a resident isn't home they simply drop the unlock code in his post box and put the package in one of the boxes. (The package is obviously too big to be dropped directly into the resident's post box.)
