Please install Notifications (Echo) on the Polish Wikipedia. I think the community supports this in general.
Is it even possible? It seems some similar requests were rejected (bug 50064?).
I'll start a straw poll to confirm this after it's made clear that the request will be fulfilled (I don't want to bother them otherwise).
Version: wmf-deployment
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=52510