国际快递被扣关有很多原因，在被扣关后不要害怕或慌张，只要按照正常的流程解决，通常在交清关税后都可以顺利放行。包裹扣关时希望买家联系海关进行清关。
sample
dear customer,
we have checked the tracking information and found your package has now arrived at your country's customs agency. if your package is delayed, please consult your local customs office to resolve the problem. if you have any further questions, please feel free to contact me.
best regards,
( your name )
常用句型:
1.the tracking number is xxx.
你的快递号是xxx。
2.it should take 5-10 business days to reach your destination.
货物要5~10个工作日才能到。
3. the tracking information shows it's still on the way.
快递信息显示你的包裹还在路上。
4. we can resend your order or apply a full refund to you.
我们可以重新给你寄或者你可以申请全额退款。
5. if your package is delayed, please consult your local customs office to resolve the problem.
如果你的包裹被耽搁了，请咨询当地海关部门解决问题。