Messenger User Acquisition: How to build Facebook Comment Auto Reply(Private Reply) using nodeJS

Note: This document refers to a feature that was removed after Graph API v2.10. Part 1: Goto your Facebook app (https://developers.facebook.com/apps) Request permission for following manage_pages,publish_pages,read_page_mailboxes,pages_messaging,pages_messaging_subscriptions Enable “FEED” subscription (https://developers.facebook.com/apps/APP_ID/webhooks/) Part …

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