Rather than undeliverable mail get returned, I should have gotten a warning message that the account for the addressee does not exist. Instead the mail was accepted. It would not have been a big deal but 25 bone shards just got lost for no good reason. I know the name I put in by accident as the addressee doesn’t exist because it was a name I had just used in a web search. I doubled checked and that name could not be added to my friends list.