Comment by socket0

I'm going to have to agree with Google here, in that this isn't an exploitable security vulnerability. Knowing that the mailboxes [email protected] or [email protected] exist doesn't bring me any closer to exploiting the knowledge. I don't know that Famous Celebrity is in fact THE famous celebrity. I don't know whether Controversial Journalist still reads mail sent to that account. Most importantly, I don't learn anything I couldn't have learned by sending messages to every likely permutation of [email protected]. This won't teach me anything particularly useful for spearfishing, as I'm just throwing out a net hoping something gets caught.