My notification window becomes swamped at the end of the day with junk mail. I know I can clear that out, but I like to use my notification menu as a daily, grand inbox. If I could choose what mail from which account gets notifications, i.e. if I could prioritize gmail "Priority" labeled mail and disable "Promotions and "Updates" labeled mail, and actually an entire account from appearing in my notifications, the notification window would not be a spam box.