As the rest of the world has proven, cross-platform messaging is achievable — even without RCS

I’m just sitting here frustrated because I’m wanting my family to move away from messaging me over SMS (they mainly use iOS), but they refuse to download any extra apps. But Google’s RCS really doesn’t look like a solution either since it mainly just seems to be a way of enforcing Android as an ecosystem, and they don’t even make RCS available for 3rd party apps to use either.