In other countries (like Italy where I currently live) leaving a package unattended is unthinkable. If there is nobody home they leave a slip of paper that says

In other countries (like Italy where I currently live) leaving a package unattended is unthinkable. If there is nobody home they leave a slip of paper that says there will be another attempt at delivery the next day or else you have to fetch the package in some remote dispatch center (things are getting better now and many couriers are now taking their time to call you on the phone a few minutes before they drop by; sometimes you can ask them to drop the package at neighbors or at some small shop nearby, if the owner is willing)