We ship our SnackFever Box via Korea Post and then it's handled by the local national post. In the US, it's USPS.
In some cases, your mail carrier may require you to be at the shipping address. Normally, they will attempt to redeliver but if they can't, you may need to pick your package up at the post office.
If you'd like your mail carrier to leave your packages at your door, it's best to leave a note or ask them in person.