Wordpress SMS Plugin

I often hear about the frustrations with SMS marketing systems where you have to share a shortcode and pay big $$$ for just one keyword. Texting a confusing keyword to a shortcode can limit the number of opt-ins. For a couple of years now I've been developing tools that use the powerful twilio.com platform but I was surprised to not find any Wordpress plugins that made it easy for the offline niche to use twilio.