Earlier this year I asked a question on GIS SE which had a bit of activity in the form of comments and an answer. It was then closed as a Duplicate (correctly - I have no issue with that).
The interesting thing was that I wasn't told it had been closed - I had gone back to see a couple of comments that had been added and noticed
marked as duplicate by PolyGeo♦ arcpy Feb 12 at 0:58
I had not received any notification from Stack Exchange that my question had been marked as duplicate.
I have had only one other of my own GIS.SE questions closed, early in my days here, and can't remember what happened then, but I have had at least one question closed on a different SE site and I remember I wasn't notified that time (closed as off-topic - wrong SE site).
Why am I not getting notified by Stack Exchange when one of my questions is put on hold, closed, or marked as duplicate etc.?