We already have mailboxes for that. Here's an example of what it looks like if you're not familiar: https://cdn-s-www.leprogres.fr/images/A3755E4B-30EC-4378-99A

We already have mailboxes for that. Here's an example of what it looks like if you're not familiar: https://cdn-s-www.leprogres.fr/images/A3755E4B-30EC-4378-99A3-FCA7BCE2A867/NW_raw/photo-illustration-progres-frederic-chambert-1581934166.jpg https://cdn-s-www.leprogres.fr/images/A3755E4B-30EC-4378-99A.... They're around 25 cm wide and tall, and 35 cm deep.