Nope @erlend_sh sure can’t do recursive yet… and wow would Iike to see that… here’s a thread on the matter.
One more note for the OP
@adierteschik - it’s OK to have everyone in a discourse watch a given category… they’ll only get emails (or see it at all) if they are in a group that gives them permission to access it.
With that, I think this topic can be closed.