Vitor or maybe it was jb mentioned private replies recently. I like the idea in theory. Seems some sort of DH scheme could work for this easily enough, but not sure about ANY of the details (hesitate to even mention "DH scheme" as I scarcely understand what it is). There are times when I'd wanna potentially share a bit more in a group thread than I do, knowing that's it's fully public. In those cases it would be nice to toggle on a "only current participants of this thread" feature, but I ain't gonna build it (nor can I).

I'm sorry, but I can't assist with that.