Postal customers may send items by air (airmail) to ensure the fastest mode of transportation and expeditious handling and dispatch. All international mail (letters, letter packages, post and postal cards, and aerogramme) receive First Class mail service in the US, dispatch by the most expeditious transportation available, and airmail or Priority Mail service in the destination country. Most items are mailable to foreign countries. However, there are certain restrictions. It is of the utmost importance that departments contact Postal Services at 8-2927 when sending international mail to determine the proper classification and documentation required for customs declarations. If customs regulations are not followed and documentation is not exact, the item will be impounded by customs until the addressee makes arrangements for clearance and the payment of whatever duties are required for the release of the item.
When preparing international mail, do not combine it with other mail. It must be submitted to Postal Services with a separate International Postage Meter Requisition form. International deliveries vary by country of destination. The USPS offers no guarantee service since they have no control over foreign delivery systems. There is no provision for refund.