Inbox workflows are screwed up because they are built by engineers who think that everyone works like they do. We need to look at what users really do and build for a wider section of the market, instead of just left-handed Chrome users who use Gmail to send sales pitches. Mailstrom is one such attempt at using customer-development to create such a tool. Many statistics are cited.
Clipping is a handy way to collect important slides you want to go back to later.