This is infinitely more useful than ANYTHING available in the top Operating Systems in the world, browsers (which are quickly becoming the go-to text editor).
I would pay up to $5 for the tech to become a bookmarklet / chrome extension / desktop service utility / GMail email composer tool. Fantastic and kudos to the team behind it. This is NOT a simple problem.
P.S. I know this does not cover all corner cases. But, it is miles better than anything else out there.