If Amazon is doing the actual delivery, they usually email me a photo of the actual package(s) on my porch telling me it has been delivered. This helped me once when a large plastic envelope was delivered empty because it wasn't sealed properly. I referenced their own photo to show it was empty when I reported the problem. I had no problem getting a new item sent right away. Luckily I've not yet had problems getting packages regardless of the website or delivery company other than occasional delays in delivery.