Sentiment Analysis of Product Reviews using Google Sheets & OpenAI

🧠 Sentiment Analysis of Product Reviews using Google Sheets & OpenAI

🚀 Quick Implementation Steps

Automated customer feedback analyzer:

Trigger**: Google Sheets triggers on new product review rows. Sentiment Analysis**: Review text sent to OpenAI. Writeback**: Resulting sentiment (Positive, Neutral, Negative) is written back to the sheet.

Just connect your credentials and sheet — you're ready to go!

🔍 What It Does

This workflow automatically analyzes user-submitted product reviews and classifies them by sentiment using OpenAI’s powerful language models. It eliminates the need to manually sift through feedback by tagging each review with a sentiment score.

The sentiment result is then written back to the Google Sheet next to the original review, enabling you to get a fast, clear snapshot of overall customer perception, satisfaction and pain points. Whether you're monitoring 10 or 10,000 reviews, this process scales effortlessly and updates every minute.

👤 Who’s It For

This workflow is designed for:

E-commerce teams** collecting user reviews. Product teams** monitoring customer feedback. Marketing teams** identifying promotable reviews. Support teams** watching for negative experiences. SaaS platforms**, apps, and survey tools managing structured text feedback.

✅ Requirements

You’ll need:

A Google Sheet with two columns: Review and Sentiment Google Sheets OAuth2 credentials in n8n OpenAI API Key (for GPT-4o-mini or GPT-3.5) n8n instance with LangChain and OpenAI nodes enabled

⚙️ How It Works

Google Sheets Trigger: Watches for new rows every minute OpenAI Integration: Uses LangChain’s Sentiment Analysis node Passes review text into GPT-4o-mini via the OpenAI Chat Model node Sheet Update: The sentiment result (Positive, Negative, or Neutral) is written into the Sentiment column in the same row.

Sticky Notes included for better visual understanding inside the workflow editor.

🛠️ Steps to Configure and Use

1. Prepare Your Google Sheet

Make sure your sheet is named Sheet1 with the following structure:

| Review | Sentiment | |---------------------------------------|-----------| | Absolutely love it! | | | Not worth the price. | |

2. Set Up Credentials

Google Sheets**: OAuth2 credentials OpenAI**: API Key added via OpenAI API credential in n8n

3. Import & Activate Workflow

Import the workflow JSON into your n8n instance. Assign the proper credentials to the trigger and OpenAI nodes. Activate the workflow.

🧩 How To Customize

🛎️ Alerting: Add Slack/Email nodes for negative sentiment alerts 🔄 Triggering: Change the polling interval to real-time triggers (e.g., webhook) 📊 Extended Sentiment: Modify sentiment categories (e.g., "Mixed", "Sarcastic") 🧾 Summary Report: Add Cron + Aggregation nodes for daily/weekly summaries 🧠 Prompt Tuning: Adjust system prompt for deeper or context-based sentiment evaluation

🧱 Add‑ons (Optional Features)

Email Digest of Negative Reviews Google Drive Logging Team Notification via Slack Summary to Notion, Airtable, or Google Docs

📌 Use Case Examples

Online Stores**: Auto-tag reviews for reputation monitoring Product Teams**: See which feature releases generate positive or negative buzz CX Dashboards**: Feed real-time sentiment to internal BI tools Marketing**: Extract glowing reviews for social proof Support**: Triage issues by flagging critical comments instantly

...and many more applications wherever text feedback is collected.

🧰 Troubleshooting Guide

| Issue | Possible Cause | Suggested Fix | |-------------------------|---------------------------------------------|---------------------------------------------------| | Sentiment not updating | Sheet credentials missing or misconfigured | Reconnect Google Sheets OAuth2 | | Blank sentiment | Review column empty or misaligned | Ensure proper column header & value present | | OpenAI errors | Invalid or expired API key | Regenerate API Key from OpenAI and re-auth | | Workflow doesn’t run | Polling settings incorrect | Confirm interval & document ID in trigger node |

🤝 Need Help?

If you need assistance for

✅ Help setting up this workflow ⚙️ Customizing prompts or output 🚀 Automating your full review pipeline

👉 Contact us today at WeblineIndia. We will be happy to assist.