Tracking of an international shipment

When you selling on Ebay you usually deal with international buyers.
You have to send item abroad and then, if buyer claims item as not received, you have to prove that
item was send, and received by buyer. In other case, you just loose money.

There's enough of bad experience with Paypal's refunds for not received items. Isn't it?
Yes! Especially from US sellers. Who use to send items with CUSTOMS DECLARATION number
which doesn't tracks on other postal sites.

So, to prove that the item delivered you need to track them at local postal sites, with their local languages
(examples: russian post, Elta (greece), spanish languages postal services etc.)

But there's an international track and trace system, which can help you to track items in 1 place with
translation to english, it is http://www.trackitonline.ru.
If you wish to get automatic updates of your postal item, you just need to register there and add item.

Also, I heard much troubles of US sellers with international buyers, especially from russia.
Russian postal servise is very slow, but their postal system tracks every step of the item starting from
Import to Delivery.

So where's the problem? Problem is that US sellers send items with Customs number, which is not trackable.
If you want to be sure that item delivered please send items to russia with registered option (R*), and you
will be able to track it down to Delivery.

tracking numbers and their options:
L*xxxxxxxxxxUS - /letter/ not trackable outside US (only few countries track it)
R*xxxxxxxxxxUS - /registered item or small packet/ should be trackable in any country, only local events
C*xxxxxxxxxUS - /parcel/ should be trackable in any country, complete events
E*xxxxxxxxxUS - /express mail/ - should be trackable in any country, complete events

Some countries do not track incoming registered items too (Australia, France, Germany and more), but it is possible
to confirm receipt through postal service (email, or call).
So if buyer claim non receipt, do not hesitate to call their local postal service.