Just a little hint: if you have to fold/spindle/damage a postal package to get it into the letterbox, it might behoove you to take 10 seconds to come up the driveway, and knock on my front door, which I will answer in 15 seconds, maybe 30.
Luckily for you, Postie, the book inside the parcel wasn't damaged (as far as I can tell) but it looks like the "Private and Confidential" parcel is a bit chewed up on the bottom and top. Mostly from your cramming it into a too small letterbox, up against the lock of it. If it's too badly mangled to maintain professionalism,
Wing will be contacting you, and chances are someone is going to need iron underwear after the ass chewing he politely gives them.
Have a nice day.