> For the complete documentation index, see [llms.txt](https://chatinflow.gitbook.io/chat-in-flow-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://chatinflow.gitbook.io/chat-in-flow-docs/product-guides/setting-up-channels-for-messages/facebook-messenger.md).

# Facebook Messenger