Identifying Facebook Messenger user with UserID from a Facebook Login

Question

I am trying out the new Facebook Messenger Platform and have hit a bit of a problem.

When a user first chats with my Bot, I want to use the sender.id to loo

Answer 1

This is probably what you want: https://developers.facebook.com/docs/apps/for-business

It allows you to get all of the app-scoped user ids on a per-business basis.