I agree! I have seen this happen to me years ago when Gmail debuted. But, this used to work - at least for Facebook. So, someone changed something at Facebook I guess - and decided to canonicalize the email. The other mystery of course is how the email set on my OG a/c just disappeared. It does not show up. Anyway, I will see what I can get done through official channels

P.S. I did start off with [Help HN] in the subject; but for some reason that was auto removed by HN. So `[Help HN] text` became just `text`. I eventually edited the subject to at least put in `Help` there.