Regarding having an email app: I think that would be a great idea and we were pretty close to including one in a previous release. Based on Redmail. But around the same time we realized we were running a red queen's race and didn't have the resources to both expand the library and work on the fundamentals that would make it easier to open up development to the wider community so we chose opening up over expanding the library.

We're still focused mostly on improving the infrastructure so that the project can grow not just in the number of apps and functionality but also in engagement from the free software community. More developers = more high quality integrations. That's the theory anyway.

If anyone out there is interested in putting together a TurnKey mail app, that's something that we will enthusiastically support and help in any way we can, including improving the development tools if need be.

Regarding OxWall: I was confused by the weird CPAL licensing at first but it does seem to be an open source project, even though they don't really seem to be too keen on emphasizing that.

Currently OxWall isn't on the shortlist of new apps but since we're really tight on resources the way that best chance at extending that shortlist is that someone from the community (or even better - OxWall itself) decides they're interested in rolling up their sleeves and creating a new app.