Send Instagram auto DMs to post commenters using Meta Graph API

Automate the most popular growth hack on Instagram: "Comment 'DM' to get the link!"

This workflow listens to your Instagram posts in real-time. When a follower comments a specific trigger word (like "DM", "Link", or "Guide"), n8n automatically sends them a direct message containing your lead magnet, product link, or document.

Stop replying to hundreds of comments manually. Build your email list, drive traffic to your website, and scale your engagement on autopilot! 🚀

🎯 Use Cases Content Creators: Send exclusive PDF guides or templates to followers who engage with your reels/posts. E-commerce Brands: Send discount codes or hidden product links directly to interested buyers. Course Creators & Coaches: Deliver webinar registration links instantly when someone comments on your promotional post.

✨ Workflow Features Smart Filtering: Ignores your own replies so it doesn't trigger an infinite loop. Post-Specific: Only triggers for the exact Post ID you define (won't misfire on your older posts). Case-Insensitive: Catches both "DM" and "dm" seamlessly. Instant Delivery: Uses the official Meta Graph API to deliver messages the second the comment is posted.

🛠️ Prerequisites To use this workflow, you will need: 1. An Instagram Professional/Business Account linked to a Facebook Page. 2. A Meta Developer App with the instagrammanagecomments and instagrammanagemessages permissions. 3. Your Meta App configured to send Webhooks to this n8n instance.

🎥 Setup Instructions & Video Guide If you're new to setting up Meta Webhooks and generating Graph API Access Tokens, don't worry! I have recorded a complete walkthrough:

👉 [Watch the Step-by-Step Video Setup Guide Here](https://www.youtube.com/watch?v=6UYLEWX-Po)