Ugh. Yet another intriguing email startup being acquihired and killed off by a more-established tech company (see also: Sparrow). It's 2015 and I still bounce around email clients every couple months because all of the major options have substantial flaws.
Webmail is way too ubiquitous for desktop email software to be worth the million dollars a year it costs to hire five bay-area software developers to build and maintain it. I imagine Dropbox would have kept it around if it saw more user traction, but it didn't. Inbox by GMail has some of the ideas from the Sparrow team incorporated in it, but it's only really usable on mobile. (The desktop Inbox web app is awfully sl…
I don't expect anyone else to build me a FOSS email client. I do expect that by 2015 somebody would have figured out a way for me to give them money for a good email experience. :)