About twenty years ago, I was taking a flight back from Rio de Janeiro, Brazil to the US. In the middle of the night the pilot got on the loudspeaker and said "hi! Having some engine trouble, so we are landing in Manaus." Manaus is in the middle of the Amazon. Needless to say, a bit scary to hear that, but we landed without issue. They told us we had two choices: the nice hotel with a shared room, or the lesser nice…
> I got a really strange response over email which I clearly wasn't supposed to see. A representative from that airline was asking internally if they could put me on the no-fly list. That was really chilling. What if they only pretended to forward it to you by mistake and you /were/ supposed to see it? As in "it would be a shame if you could never fly again".
It is clearly a threat, and most likely a bluff. But should it be brought to court, they could claim it was indeed internal communication (and that you should feel bad for reading it in the first place). There may even be an internal response saying "no you can't be put on the no-fly list", which isn't forwarded to you of course, to keep up with the masquerade.