Does the new Mute Notifications keep notifications from going out?

[CMWilson]

I really like the idea of Mute notifications if it allows the instructor to keep notifications from going out? Does it? I can't tell you how many times I make little tweaks to content or to a PD course where faculty stay in the course after they have finished it and I don't want every little change going out to them as a notification. Is that what this does or does it just let the student keep from receiving them?