Sometimes there are Amazon packages left near the entrance of my apartment building for weeks or even months. Often times I notice the names on these are people who have moved out. In that case is it permissible to open them?
And then what? It’s hard to gauge whether Amazon cares or not. Your best bet is to call Amazon and let them know there packages there and you want to know if you can throw them out. If they say yes, its hefker and enjoy.