I received a couple packages this week, and one of them had a fair bit of water damage along one edge. I don’t mean discoloured-and-wrinkled either; it was still fairly damp and easily tearable when I took it out of the mailbox. The mailbox itself is inside, so I’m not sure if water got in the drop-box, or delivery van, or sorting centre, or what.
Fortunately it’s the first time it’s ever happened, but too bad it had to be to someone else’s artwork originals… At least they seem to be mostly repairable by reflattening them under a stack of books.
The other package only suffered bent corners, but it seems that happens to nearly everything that gets mailed, no matter how well it’s protected.