No, the browsers, operating systems, and keyboards (on mobile) can already do that. It's also a helpful form of meta-communication in that often you can tell w

No, the browsers, operating systems, and keyboards (on mobile) can already do that. It's also a helpful form of meta-communication in that often you can tell who is or isn't a native English writer, and adjust your replies accordingly. (Not to be mean or anything, but just to limit reading level or vocabulary.)