Email management fragmentation - the problem persists

So here's the gig. The approach to addressing the modern problem of email management for the white collar worker boils down to the simple reality that people need to make a decision about their next actions resulting from having received an email and then acting upon or recording that next action for future attention. No more, no less. Scooting around You Tube on an email management search just now, I came across this video which is a neat tool and certainly of value but by no means the solution. Actually, its pretty indicative of products and services that simply miss the point.