Oh, great, there’s an RFC, that’s awesome.

Maybe Gmail will just switch to that and no milters will be necessary?

I already started a thread.

App idea.

Postfix milters that translate Gmail’s dumb reaction format to Delta Chat’s good one, and the other way around. Would only work on the unencrypted threads with Gmail users so the benefit is pretty minor.

I’ve found specs for how the reaction looks on Gmail’s end:

Looks like a great service.