I know this is a little late, but if anyone is interested I'm building a tool with similar function (http://bip.io - its in development right now, updates via https://twitter.com/bipioapp) - treating email as 'just another protocol' infront of an API glue service. We aim to support NLP in message payloads to dynamically assemble (social and API) delivery pipelines... reach out if you're interested in contributing, the code is quickly maturing!