Don’t many overnight packages go through some really cold (warehouse/flight) or really hot (desert trucking) scenarios? I imagine it’s mostly viable in comfortable human conditions
I have received a packet from Milano yesterday (when I ordered, it wasn't clear that the senders logistics center apparantly is in Italy) and used lots of hand sanitizer while opening. It's nice to see these numbers now, indicating that this probably wasn't necessary for a packet that took a week or so to arrive.