Hi Trizek, I believe that you inserted in Help:Notifications/Notifications types the sentence "Available by default on Wikimedia wikis, it is possible to opt-out into Preferences.". What, precisely and in detail, does "opt-out into Preferences" mean?
Topic on User talk:Trizek (WMF)/Flow
Hello
While in your preferences (go to Special:Preferences or click on "preferences" on top of any page), go to the "Notifications" tab. There you can choose which notifications you want or don't want to have.
I've rephrased a bit and added a link. Thank you for spotting this unclear point!