Automated Reddit Prospecting using GPT and Supabase

Picture this: you're running a business automation service, and somewhere on Reddit right now, a frustrated entrepreneur is posting about their manual processes eating up their time. They need your help, but you're not scrolling through dozens of subreddits at 2 AM looking for them.

What if your computer could do that detective work for you? What if it could scan Reddit posts, analyze them with AI, and deliver qualified leads straight to your inbox while you sleep?

This n8n workflow does exactly that. It's like having a tireless assistant that monitors Reddit 24/7, intelligently filters potential customers, and organizes everything so you can focus on closing deals instead of hunting for them.

How This Workflow Solves Your Lead Generation Problems

Here's how this automated system tackles each prospecting challenge:

Manual Monitoring Problem: Instead of you checking Reddit multiple times daily, the workflow runs on autopilot with scheduled triggers. It searches target subreddits every morning at 8 AM, ensuring you never miss fresh opportunities posted overnight.

Information Overload Problem: The workflow uses smart filtering to eliminate noise. It only processes posts with positive engagement and actual text content, then applies GPT-4 analysis to identify posts where people genuinely need automation services.

Duplicate Effort Problem: Built-in Supabase integration tracks every post you've already seen. No more analyzing the same prospects twice or accidentally reaching out to people you've already contacted.

Poor Timing Problem: By monitoring "new" posts in real-time and delivering morning summaries, you can respond to prospects while their problems are fresh in their minds, before competitors even see the posts.

Disorganization Problem: Every qualified lead gets automatically logged in Google Sheets with timestamps and context, while email notifications provide instant mobile access. Your entire lead pipeline becomes searchable and organized.

The result? A systematic approach that transforms random Reddit browsing into a predictable lead generation engine.

Prerequisites: What You'll Need to Get Started

Before diving into the workflow magic, you'll need accounts and API access for these services:

• Reddit API - OAuth2 credentials to search and fetch posts
• OpenAI API - GPT-4 access for intelligent content analysis
• Supabase - Database for duplicate tracking and lead storage
• Google Sheets API - For logging and organizing qualified leads
• Gmail API - To send automated email notifications
• n8n instance - Either cloud or self-hosted

Don't worry if this seems like a lot. Each service offers generous free tiers, and the setup pays for itself quickly when quality leads start flowing in.

Key Components: The Workflow's Building Blocks

This automation uses several powerful n8n nodes working in harmony:

• Schedule Trigger - Runs the workflow automatically at 8 AM daily
• Reddit Node - Searches specific subreddits for relevant posts
• OpenAI Chat Model - GPT-4 powered content analysis
• Supabase Nodes - Database operations for duplicate prevention
• Google Sheets Node - Lead logging and organization
• Gmail Node - Automated email notifications
• Split in Batches Nodes - Process multiple items efficiently
• IF Nodes - Smart filtering and conditional logic
• Code Nodes - Custom JavaScript for data manipulation

Step-by-Step Implementation: Building Your Lead Machine

Step 1: Set Up the Foundation and Triggers

Start by creating two triggers in your n8n workflow. The Manual Trigger lets you test everything works perfectly, while the Schedule Trigger becomes your automation workhorse.

Configure the Schedule Trigger to run daily at 8 AM. Why 8 AM? That's when business owners often post their weekend reflections about operational challenges. Perfect timing for lead generation.

Next, add a Code node that defines your target subreddits and keywords. The workflow focuses on "smallbusiness" and "startup" subreddits, searching for posts containing "help." These are goldmine territories where entrepreneurs openly discuss their pain points.

Step 2: Implement Smart Reddit Searching and Initial Filtering

Connect a Reddit node to search your defined subreddits. Configure it to fetch the 30 most recent posts per subreddit, sorted by "new" to catch fresh opportunities before your competitors do.

Add filtering logic immediately after the Reddit search. The workflow only processes posts with positive upvotes and actual text content. This eliminates low-quality posts and image-only submissions that won't contain valuable business information.

Use Split in Batches nodes to handle multiple posts efficiently. This prevents overwhelming the subsequent AI analysis and ensures reliable processing even when Reddit returns varying amounts of data.

Step 3: Build Duplicate Prevention with Supabase Integration

Here's where the workflow gets smart about efficiency. Before analyzing any post with expensive AI, it checks your Supabase database to see if you've already processed this exact post.

Configure a Supabase "Get many rows" node to search for existing records matching both the post ID and subreddit. This double-check ensures bulletproof duplicate prevention.

Add a Code node that marks posts as duplicates or new, then use an IF node to only process genuinely new content. This saves API costs and prevents spamming the same prospects repeatedly.

Step 4: Deploy AI-Powered Content Analysis

This is where the magic happens. Connect an OpenAI Chat Model node configured with GPT-4 for maximum analysis accuracy.

The AI receives a carefully crafted prompt asking whether each Reddit post might benefit from automation services. The prompt is designed for binary responses: just "yes" or "no." This keeps API costs low while maintaining high accuracy.

Add a 1-second Wait node before the AI analysis. This prevents rate limiting issues and ensures reliable processing even during high-volume periods.

Step 5: Process and Store Qualified Leads

After AI analysis, use an IF node to filter only posts where the AI responded with "Yes." These are your qualified leads worth pursuing.

For qualified leads, the workflow performs three critical actions simultaneously:

• Saves the lead to your Supabase database with ID, subreddit, and URL
• Logs detailed information to a Google Sheet including date, subreddit, URL, and full post text
• Compiles lead information for email notification

Use Code nodes to format the data properly for each destination, ensuring consistency across your lead management systems.

Step 6: Deliver Results with Automated Notifications

The final step brings everything together with intelligent email notifications. A Code node compiles all qualified leads into a formatted HTML email containing post titles and direct URLs.

Configure the Gmail node to send these compiled leads to your specified email address with the subject "Relevant Reddit Threads." You wake up each morning to a curated list of warm prospects who've already expressed their pain points publicly.

Benefits and Use Cases: Why This Workflow Changes Everything

This automated Reddit lead finder transforms how you approach prospecting:

Time Savings: Instead of manually scrolling through Reddit for hours, you get pre-filtered, AI-analyzed leads delivered daily. What used to take 3-4 hours now happens automatically while you sleep.

Quality Over Quantity: GPT-4 analysis ensures you only see posts from people genuinely struggling with problems your services solve. No more wading through irrelevant content or promotional posts.

Competitive Advantage: Most competitors rely on manual prospecting or basic keyword alerts. Your AI-powered system spots opportunities they miss and responds faster to time-sensitive posts.

Scalability: Easily expand to monitor additional subreddits, adjust keywords, or modify the AI analysis criteria as your business evolves. The workflow grows with your needs.

Data Organization: Every lead gets automatically logged with timestamps, sources, and context. Build a comprehensive database of prospect interactions and market insights over time.

"This workflow doesn't just find leads, it finds the right leads at the right time with the right context for meaningful outreach."

Whether you're offering business automation services, consulting, software solutions, or any B2B service, this Reddit lead finder adapts to your market. Modify the subreddits, adjust the AI prompts, and customize the filtering criteria to match your ideal customer profile.

The best part? Once configured, this system runs indefinitely with minimal maintenance. Your automated assistant never takes sick days, never misses opportunities, and never gets tired of prospecting. It just keeps delivering qualified leads while you focus on what matters most: growing your business.