Insidiously and persistently, Facebook is chipping away at other messaging platforms and moving their users to Facebook Messenger. If they keep it up, by the end of 2017 there will be as many people on Messenger (currently 900 million) as Facebook (1.674 billion). But, counterintuitive as that strategy seems (why bifurcate resources on two fronts) that is all part of Mark Zuckerberg’s avec nous le deluge.
Several studies accomplished by analytics agencies such as Juniper or Gartner  report significant reduction of cost of customer services, leading to billions of dollars of economy in the next 10 years. Gartner predicts an integration by 2020 of chatbots in at least 85% of all client's applications to customer service. Juniper's study announces an impressive amount of $8 billion retained annually by 2022 due to the use of chatbots.
They have an intuitive visual interface for those without a coding background, but developers will like the editable front-end and customization options. While you can build a bot for free, a lot of the more complex (and interesting) tools are only available with Chatfuel Pro accounts. Either way, it might be helpful to know that Chatfuel integrates with Hootsuite Inbox using the Facebook Messenger handover protocol.