This is a pretty cool article. Thank you for putting the steps together. I am working on going through the series you’ve written. But instead of using Facebook Messenger, I am working on a Telegram Bot. The principles are largely the same I think. It’s just that I didn’t want to deal with doing any Facebook related thing (I also don’t have an account or dev account there, yes yes, I’m one of those…). Will check out part 2 of this over the weekend!