Interesting idea about drone-driven mailbox-loader!  However, it still has the weakness that the mail will go through the USPS, and they have the  opportunity to photograph (and weigh??  and X-ray???) it.   

I've been following dropgangs as an intellectual exercise for a few years.  Even if it doesn't involve advanced concepts like drones, it is an extraordinary advance, mostly made possible by the ubiquitous availability of GPS and other GNSS signals.  I would guesstimate that at least 1% of a city or town's surface area would be suitable for placing a drop.  



On Monday, September 21, 2020, 03:28:09 AM PDT, Steven Schear <schear.steve@gmail.com> wrote:


Wonder when someone will create a drone accessory to place stamped letters and small parcels (13 ounce maximum, in the U.S.) into the letter box to avoid visual tracking of the dropoff?

On Fri, Sep 18, 2020 at 12:45 AM grarpamp <grarpamp@gmail.com> wrote:
> Guess who had a PO Box next to Wikileaks
>
> https://www.theage.com.au/national/world-leaders-would-love-the-key-to-this-melbourne-po-box-but-wikileaks-wont-have-it-for-much-longer-20101206-18mul.html
>
> They avoided a drone strike on the university by demolishing the
> Melbourne Uni post office voluntarily:
>
> https://www.youtube.com/watch?v=ABWuKVaT13s
>
> After they destroyed that, they took out the local pub too:
>
> https://www.youtube.com/watch?v=7yCKYW5YUWw

The USA USPS takes automated pictures of all items
passing through its facilities, OCR them, stores them
forever, and gives them away to whoever they like that
comes asking.

Mail and delivery services worldwide are now
doing similar, including requiring and recording
government photo ID to send parcels and letters,
storing all camera footage, facial, and ALPR
logs, of the facilities forever, etc.