Thats not entirely true.. I have been shipping things to family in Romania and Denmark for around 12 years or more and the customs form number always provided tracking for every package i sent.. It just doesnt give you every stop the package makes along the way as it does with shipping inside the US.. All of my packages to family have also told me when things were delivered. 90% It will give you basic tracking for most places and sometimes not update you when things are delivered, it really depends where you mail it to and if the postal system is good in that country and if they scan everything that is delivered. If your item is scanned along the way you will get updates listed when you track the custom form number. The post master filled me in on that years ago when i first started shipping to my family.