Gmail's new SmartLabel can mean missing important bulk/notification mail, here's how to avoid it with Smart Label Defang

Google's GMAIL service recently rolled out a "SmartLabel" feature that automagically recognizes various kinds of bulk emails like mailing list conversations, notifications from various services, etc. When recognized it automatically adds a label to them (Bulk, Forums, Notifications, ...) and they don't show up in your main mailbox. I hadn't noticed this behavior until one day I decided to take a peak into one of them. And I found a bunch of emails there which were mildly important, but more importantly I hadn't been reading.