This is worth its own post for everyone's info, because we all get stuff shipped.
No need to express surprise.
Different shippers and different options included. In short, you may NOT over-ride with some. And, that further may depend on their loss experience. A written note left on a door WILL NOT necessarily do. So, unless you know that a note will be sufficient, plan ahead by directing the shipper NOT to require a signature from you, the recipient.
Moderator: Please find a place for a sticky on this.