It's easier to understand that if you don't normally receive mail, butPrecisely. You select "Following Only" and follow what you want.
In your choice of Individual or Digest (or Special Notices or No Email if you want to turn them off, say while you're on vacation).
If you normally receive mail, but there are a few types of messages thatPrecisely. You select "All Messages" and you mute what you don't want.
Same delivery options.