User blog comment:BertH/Technical Update: March 2, 2016/@comment-25648422-20160303205941/@comment--20160303210945

I actually like the idea of that. Though I'm wondering what sort of impact it could have on some users, who have no knowledge of being blocked on a wiki they never edited, to receive an email that they have been blocked. I can see it going two ways... a group of people becoming unsettled by the news but on the other hand, relief for others to be on top of their activity on wiki. I like the idea. If it's considered, then hopefully a switch to disable these notifications would come along with it.

(If I read this wrong then and you mean the above comment, then I apologize but I took this as "notifying of when blocked from wikis you don't edit".)