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Reddit bot automation: AI auto-reply & post monitor with GPT-4 + Google Sheets

n8nn8n16 modulesv1.0
GmailGoogle SheetsOpenAI

Built an AI-Powered Reddit Engagement (Reddit auto comment to relevant posts based on your whish. A workflow That Actually Helps People and helps you to promote your product and service. Just spent hours fine-tuning an n8n automation that genuinely adds value to Reddit conversations and to your service, app, business or message that you want to promote. Here's what it does: The Challenge: Finding relevant discussions where my service, app, business or message could actually help someone - with

At a glance

Reddit bot automation: AI auto-reply & post monitor with GPT-4 + Google Sheets is a ready-made n8n workflow you import as a workflow JSON file — no build required. It connects Gmail, Google Sheets, OpenAI. It's free to download. Follow the 5-step import below to go live in minutes.

Platform
n8n
Connects
Gmail, Google Sheets, OpenAI
Modules
16
Price
Free
Version
v1.0
Reddit bot automation: AI auto-reply & post monitor with GPT-4 + Google Sheets workflow diagram

About this workflow

Built an AI-Powered Reddit Engagement (Reddit auto comment to relevant posts based on your whish. A workflow That Actually Helps People and helps you to promote your product and service. Just spent hours fine-tuning an n8n automation that genuinely adds value to Reddit conversations and to your service, app, business or message that you want to promote. Here's what it does: The Challenge: Finding relevant discussions where my service, app, business or message could actually help someone - without being spammy or salesy. The Solution: An intelligent workflow that: - 🔍 Monitors multiple subreddits for photo editing discussions - 🧠 Uses GPT-4.1 to analyze comments (not just posts!) for genuine need - 🎯 Filters out bots, moderators, and irrelevant content - ✍️ Crafts helpful, conversational responses that provide value first - 📊 Tracks everything in Google Sheets for transparency Key Features: - Runs every 3 hours automatically - Analyzes comment context, not just keywords - Only engages when the service, app, business or message is genuinely relevant - Focuses on helping, mentions the app naturally if appropriate - Respects Reddit culture and community guidelines Why This Matters: Instead of blind self-promotion, this creates genuine interactions. When someone asks "Anyone know a good service, app, business to do XYZ?", they get a helpful response from someone who's actually built a solution. Tech Stack: n8n, OpenAI GPT-4, Reddit API, Google Sheets The best part? It forces me to only engage where I can add real value. No spam, just helpful participation in communities I care about. What automation challenges are you working on? Happy to share learnings! Questions or feedback?: heniykb@gmail.com

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How to import this n8n workflow

  1. 1

    Download the workflow JSON file after purchase.

  2. 2

    Open n8n → click the menu → Import from File.

  3. 3

    Select the downloaded JSON and import.

  4. 4

    Set up credentials for each node that requires them.

  5. 5

    Click Execute Workflow to test, then activate.

Setup guide

Setup guide included

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