For me, it's under: Settings -> Sound & notification -> Manage app notifications This took me several minutes to figure out because I had a mental blind spot

For me, it's under: Settings -> Sound & notification -> Manage app notifications This took me several minutes to figure out because I had a mental blind spot to "Sound & notifications" due to the fact that the option has a speaker/volume icon. I made the mistake of trusting the icon as a sincere shortcut for understanding the text it's supposed to represent.