@neil If limited to "recipient+sender" messages only it would be more straightforward, wouldn't it? Wonder if it's worth someone writing something that adds it only for those. 🤔
(Using some kind of external, proven library, I mean, to minimise the burden on fedi devs to start from scratch and get it right)
@tokyo_0 I think I'm still erring on the side of "leave that too a security-focussed messaging system", rather than creating another one here.