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AI-powered webinar feedback replies with GPT-4, Google Sheets, and Gmail

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Open on n8n.io

Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

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 sent...

Best for

  • Ticket Management automation workflows
  • AI Summarization automation workflows
  • advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.webhook, n8n-nodes-base.code, n8n-nodes-base.googlesheets, n8n-nodes-base.gmail, @n8n/n8n-nodes-langchain.openai, n8n-nodes-base.merge, n8n-nodes-base.stickynote

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Avkash Kakdiya.

Original n8n.io source

1.1 Workflow description

Title
AI-powered webinar feedback replies with GPT-4, Google Sheets, and Gmail
Workflow name
AI-powered webinar feedback replies with GPT-4, Google Sheets, and Gmail

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.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Feedback Webhook

Type / Role
n8n-nodes-base.webhook - webhook
Config choices
Version 2.1

Block 2 - Normalize Feedback

Type / Role
n8n-nodes-base.code - code
Config choices
Version 2

Block 3 - Store Feedback

Type / Role
n8n-nodes-base.googleSheets - googleSheets
Config choices
Version 4

Block 4 - Parse AI Response

Type / Role
n8n-nodes-base.code - code
Config choices
Version 2

Block 5 - Build Email HTML

Type / Role
n8n-nodes-base.code - code
Config choices
Version 2

Block 6 - Send AI Thank You Email

Type / Role
n8n-nodes-base.gmail - gmail
Config choices
Version 2.1

Block 7 - Message a model

Type / Role
@n8n/n8n-nodes-langchain.openAi - openAi
Config choices
Version 2.1

Block 8 - Merge

Type / Role
n8n-nodes-base.merge - merge
Config choices
Version 3.2

Block 9 - Common Resources

Type / Role
n8n-nodes-base.code - code
Config choices
Version 2

Block 10 - Store Partial

Type / Role
n8n-nodes-base.googleSheets - googleSheets
Config choices
Version 4

Block 11 - ID Generation

Type / Role
n8n-nodes-base.code - code
Config choices
Version 2

Block 12 - Sticky Note

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 13 - Sticky Note1

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 14 - Sticky Note2

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 15 - Sticky Note3

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 16 - Sticky Note4

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 17 - Sticky Note5

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

3. Summary Table

Workflow AI-powered webinar feedback replies with GPT-4, Google Sheets, and Gmail
Complexity advanced
Nodes 17
Categories Ticket Management, AI Summarization
Author Avkash Kakdiya
Published 17 Dec 2025

4. Reproducing the Workflow from Scratch

  1. 1. Download the workflow JSON

    Use the JSON export at /data/workflows/11889/11889.json as the source template for this automation.

  2. 2. Import the template into n8n

    Open n8n, import the downloaded JSON, and review each node before activating the workflow.

  3. 3. Configure credentials and variables

    Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.

  4. 4. Test with sample data

    Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.

  5. 5. Activate and monitor

    Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Frequently asked questions

What does AI-powered webinar feedback replies with GPT-4, Google Sheets, and Gmail do?

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 sent...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Ticket Management, AI Summarization use case.