This is well-articulated, but as you say yourself ("high-volume recipient"), you're probably an outlier. The problems and solutions that the kickstarter project talks about really resonated with me (I probably only receive about 50 emails per day).

I could use a little clarification on your exact point though -- sounds like you're saying that your email application isn't your todo list, but your emails become your todo list (just in some other silo than your inbox)? Seems like the same thing to me -- what if the email application was more like that other silo, then you don't need 2 silos.

Finally, in the interest of full disclosure, it's probably fair to mention that you have been Amy Hoy's business partner in the past (not that this implies any dishonesty or discreditation of your point... just sayin').