There are many reasons that a package may be returned to us as undeliverable.
Item is too big for a P.O. Box.Some items are too big to ship to a P.O. Box and must be shipped to a street address.
Incorrect Address. If the address is incorrect or outdated, the package is typically returned to us by the carrier or the unintended recipient.
Carrier Does Not Deliver to the Address.The U.S. Postal Service does not deliver to some addresses. If you also have a PO Box address, it's best to use that address for your Amazon.com orders. All orders with "PO BOX" in the address are automatically shipped via U.S. Mail.
Restricted by the Department of State. Many items can be shipped to DOS addresses, however, some cannot and will be returned as a result. For a full list of shipping restrictions at a specific DOS address, please contact the DOS facilities staff at that location.
Address Format. If a post office box address was entered in a format our system does not recognize, the package may be shipped through a carrier that cannot deliver to a post office box. To ensure that such packages are routed through the proper carriers, please enter the box number as "PO BOX" followed by the number.
Failed Delivery Attempts. Most of our carriers make three attempts to deliver a package. Packages that contain $25 or more of merchandise will always require a signature; otherwise, it is generally up to the driver's discretion to determine whether a signature is required. After three attempts, the package will be returned to us.
Damaged During Transit. If a package is damaged on its way to you, the shipper may return it to us without attempting delivery.
Refused by Recipient. If a recipient is not expecting a package, they may refuse it if they believe it was sent to them in error.