Nobody but the USPS is allowed to put anything in or remove anything from a mailbox.

If you're talking about a separate locker, not a bad idea but I'd assume that would be a lot more costly than replacing your lock and also would introduce all sorts of variability about size and where it would be placed.

DHL in Germany offers sth. like that: https://www.dhl.de/de/privatkunden/pakete-empfangen/pakete-z... - without the smarts.

Amazon has lockerboxes too.

Which you can put in front of your house? In Germany "Amazon Locker" just lets you deliver to post stations where you then can fetch it.

My bad. From the URL I thought it was about Packstation. That's what Amazon Lockers are.

But in the US there are apartments that have something like a "Packstation" for residents only.

Yes, or a strong-box that interlocks with a closed exterior door. Amazon's no longer content to just metaphorically want access to our homes and lives, now they actually want in..

Like the dvd rental return boxes in movie rental stores.

Yes, I assumed Amazon Shed as a personal outside-the-home locker would have been next, but installing a key and camera does seem probably cheaper.