Magpie Lane Supplies on Etsy) We do it to help offset the price when we buy in bulk. We ship to people everywhere in the world. Today someone opened a case saying that they had not received their item that they purchased in December. They reside in India.
Now we keep pretty good records, though I am not as organized as I should be. I generally make it a point to add shipping notification on every item I ship as well as the tracking number. I must have been out of customs forms and got one at the library because I marked the item as shipped but did not provide a tracking number. *Hint: You should always add a tracking number.
Fortunately, I keep receipts for any packages that I ship outside of the US, I always have. I was able to enter the number into the claim. I am not sure what is going to happen with this because there is no way to track an item sent out of the US First Class Mail. It may be I end up refunding the money. I do have proof that I shipped the item and proof that it was in the US for a time.
The point of the matter is you should keep detailed records of all kinds including records of shipping. I plan to put a tracking number into the Etsy system on every order from now on just to be safe. Keeping accurate records can save you money.