How can I customize which Gmail notifications are shown in the notification bar?

I receive dozen of useless newsletters everyday from my school, at the same time the same addresses may send a few important e-mails that I need to read ASAP.

How can I setup the Gmail client and the Android notification bar in such a way that the bar will show new messages only of their title doesn' start with a certain string of characters?

ex. if the same address sends me a newsletter called "Campus news no. xxx" (with the exact title changing everytime) how can I have the notification bar NOT show any message starting with the string "campus news"?

(Android 4.2.2 with Touch Wiz - Samsung Ace 3 GT-7270)