The post office delivers parcels (that don't need signatures) by just placing them or throwing them at our front door and leaving. They never knock or anything to let us know that there is something at the door... I watch the van stop at the kerb, the guy get out, move quickly towards the door, and often throw the box so that he doesn't have to walk up 5 steps to the door. Then he leaves in the van.
It is so easy to lose parcels these days because they don't even knock to make sure you know before a pedestrian knows, that a parcel has been delivered. How often do you go to the front of the house in a day? Even if you have schoolkids or a 9-5 worker, that's a lot of time in the day when you're not out the front of the house to know if something has been sitting there for several hours. How are most householders to see a parcel sitting there, before a stranger walking by does... especially if you live on a busy street or near a bus stop. And what if it rains with enough breeze to blow on the parcel.
Even if the parcel deliverers are on a tight schedule and don't have time to make sure someone has come to the door, how long does it take to knock before rushing back to the van?

What's the point of tracking (which they force everyone to pay for now), if it can't prove that something was actually received, because any postal worker can say it was delivered without actually delivering it, or to the right address.
Megatran had a similar issue with an item being sent to the wrong house on his street, and the neighbour opened it and destroyed it. But to Australia Post, in their system it was delivered, so they don't see it as being a problem that can be questioned or resolved.


This is why I pay to have a PO Box... and hate it when things like Ebay's Global Shipping Program forces you to use your street address on that item, AND on any other item you pay for at the same time that isn't on the GSP.
I paid for seven items at once at the last ebay discount sale, but since one was on the GSP, all now have to be sent to my home address, even though six of them will be delivered by Australia Post, who clearly can not be trusted with parcels to home addresses. So for the next two weeks I have to be extra vigilant on listening out for the van, and try not to go out too often or for very long.