Is it just me or if you have a letter posted to someone’s address without warning(/asking) them and they email you to say that a letter has arrived and ask you what you’d like done with it, should you not at least reply to said email?
Apparently not.
And when they send a second email asking if you received the first one, would it not be polite to reply to that too?
Again, apparently not.
It’s going in the binWWWreturn to sender soon