When shipping internationally, you must comply with USPS® international shipping regulations and the regulations of the destination country. Some items are prohibited (completely forbidden) and some are restricted (allowed under certain conditions). Use the resources here to help you make sure that your shipment complies with USPS and foreign country regulations.
If you’re shipping within the U.S., see Domestic Shipping Prohibitions & Restrictions.
USPS International Shipping Regulations
Anything that may not be shipped in the United States you may not ship internationally. Also, you may not mail certain items, like cigarettes, internationally even though you may mail them within the United States. USPS Publication 52, Hazardous, Restricted, & Perishable Mail and the International Mail Manual provide full explanations on USPS regulations of prohibited and restricted items.
Foreign Country Regulations
Foreign countries also have their own prohibitions and restrictions regulating the shipping and receipt of certain items. 当运送到国外的 APO (陆/空军军队邮局)/FPO (舰队邮局)/DPO 地点时，USPS 会将该邮件视为国内邮件，但是运送仍受那些外国的禁止和限制。Be aware that size and weight standards may differ from USPS standards. Review the country-specific information for more information on the destination country’s prohibitions and restrictions.
所有 USPS 客户均负责：
- Reviewing USPS Publication 52, Hazardous, Restricted, & Perishable Mail and the International Mail Manual to find out if your item is mailable, and reviewing the Individual Country Listings page to discover if the destination country permits its receipt.
- Complying with Postal Service™ regulations, U.S. related laws and regulations, and the laws of your destination country.
Internationally Prohibited Items
These items may not be sent from the United States to any country:
USPS® 是唯一运送火化遗骸（人类或宠物骨灰）的寄件公司。You may ship cremated remains internationally (if the destination country permits) but must use Priority Mail Express International® and the appropriate customs form. You are required to use a properly sealed funeral urn as the inner primary container. 对于外运送包装，您必须使用我们的两个残骸套件之一，或使用您自己的正确包装的坚固耐用容器，并在包装盒的所有四个侧面，外加顶部和底部贴上“火化残骸”标签 139。在 The Postal Store® 免费订购火化遗骸寄件物资供应。
仅授权制造商和经销商可邮寄或接收枪支。Many countries have distinct domestic laws impacting the shipping and receipt of firearms.
Only lithium cells and batteries that are properly installed in the equipment they are intended to operate may be mailed internationally or to APO/FPO/DPO locations if the destination country and APO/FPO/DPO permit their receipt.
Prohibited Lithium Battery Shipments
- Lithium batteries packed with, but not installed in, equipment
- Lithium batteries sent separately from equipment
- Damaged or recalled batteries
除了在有限的情况下，不得邮寄宠物和温血动物。活体动物（包括家禽、爬行动物和蜜蜂）的邮寄有非常详细的包装要求。Although you can drop these animals at any Post Office™ location, they are only shipped when the right transportation is available.