Parcels sent abroad need to go through foreign customs, and customs inspections of parcels are mostly conducted in the form of sampling. If the customs deems your package to be particularly special (such as large volume, heavy weight, or containing sensitive items), they will generally proactively contact the recipient to provide an invoice or clearance documents. The costs incurred due to the package being returned or destroyed due to inability to contact the recipient or the recipient's lack of cooperation in actively contacting customs clearance will be borne by the recipient themselves.