AI-Powered Webinar Feedback Replies with GPT-4, Google Sheets, and Gmail

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Built by Avkash Kakdiya Avkash Kakdiya
Created on June 05, 2026

Description

How it works
This workflow captures webinar feedback through a webhook and normalizes the submitted data for processing. It stores raw feedback in Google Sheets, uses an AI model to understand sentiment and intent, and generates a personalized response. A professional HTML thank-you email is sent automatically to each attendee. All replies and delivery details are logged back into the spreadsheet for tracking.

Step-by-step
Receive webinar feedback**
Feedback Webhook – Accepts feedback submissions from a webinar form in real time.
ID Generation – Creates a human-readable, unique feedback ID for tracking.
Normalize Feedback – Cleans and standardizes incoming fields like name, email, rating, and comments.

Store and enrich feedback**
Store Partial – Saves the raw feedback data into Google Sheets.
Common Resources – Attaches shared webinar resources such as recordings and slides.

Analyze feedback with AI**
Message a model – Evaluates sentiment, engagement level, and intent using an AI model.
Parse AI Response – Extracts structured insights like segment, reply text, and next steps.

Generate and send follow-up**
Merge – Combines feedback data, AI response, and resources.
Build Email HTML – Creates a clean, professional HTML email tailored to each attendee.
Send AI Thank You Email – Sends the personalized follow-up via Gmail.

Log final outcome**
Store Feedback – Updates Google Sheets with the sent email content, timestamp, and status.

Why use this?
Save time by automating webinar feedback follow-ups end to end.
Ensure every attendee receives a thoughtful, personalized response.
Maintain a complete feedback and communication log in one place.
Improve engagement without sounding promotional or generic.
Scale post-webinar communication without manual effort.

Nodes Used (4)

Code
n8n-nodes-base.code
Gmail
n8n-nodes-base.gmail
Google Sheets
n8n-nodes-base.googleSheets
OpenAI
@n8n/n8n-nodes-langchain.openAi