We continue to add more and more columns to the email list view that, in the fullness of time, mean that you'll never have to leave the list view to get the information you need. (I am kidding, but only slightly.)
Here's the TL;DR — you can now see how many subscribers (and paying subscribers) each email has driven, and sort by those columns, so as to see which emails are driving the most subscribers (and payments). This of course only works if you have online archives enabled, since we're not using cookies or invasive ad-tech to determine this.
Combined with the existing columns, it should be easier than ever to understand which emails are pulling in traffic and conversions! (Next up; adding conversion data, too.)