Many experienced sellers will fortunately get this email from the honest customers from time to time.
The reason a customer has sent me this is probably (yes I am only assuming) they have received a notification from Amazon since it has not received a scan at their end. For every one of these I receive, I will get 2 or 3 that will write and say that they have not received it. I therefore have no option but to refund or swallow an A-Z Claim.
Amazon know full well this is not right and yet they continue to do it. Why? Where's the benefit?
This sort of behaviour only promotes potential fraud and dishonesty. It serves no benefit to the an honest customer as shown below. It serves no benefit to Amazon. It serves no benefit to the seller (in fact it punishes the seller). It only serves benefit to someone that sees an opportunity to make a fraudulent claim that will ultimately get support from Amazon to make a false claim.
I just don't get it. Here is a copy and paste of the exact message I received just this morning from a low value order.
Hi this item has been delivered even though it is showing as lost