We receive many many bounced back packages every day (including unclaimed ones and ones with insufficient address). One tip of making sure smooth delivery is to fill out an address at checkout that is likely to have someone to sign for it during day time, say for example your work address, or a friend who works from home. When the package is not signed, postman will usually leave a note and bring it back to the post office and wait for it to be picked up. Sometimes they will only wait for as short as a week, and will send it back to us when unclaimed. Let us know at firstname.lastname@example.org if you have questions with your delivery! Have a great weekend!