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Automate event registration and QR check-ins with Google Sheets, Gmail, and Slack

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Automate event registration and QR check-ins with Google Sheets, Gmail, and Slack preview
Open on n8n.io

Important notice

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

1. Workflow Overview

Who is this for? This template is ideal for event organizers, conference managers, and community teams who need an automated participant management system. Perfect for workshops, conferences, meetu...

Best for

  • Miscellaneous automation workflows
  • advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.webhook, n8n-nodes-base.set, n8n-nodes-base.googlesheets, n8n-nodes-base.code, n8n-nodes-base.httprequest, n8n-nodes-base.gmail, n8n-nodes-base.respondtowebhook

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title
Automate event registration and QR check-ins with Google Sheets, Gmail, and Slack
Workflow name
Automate event registration and QR check-ins with Google Sheets, Gmail, and Slack

Who is this for? This template is ideal for event organizers, conference managers, and community teams who need an automated participant management system. Perfect for workshops, conferences, meetups, or any event requiring registration and check-in tracking. What this workflow does This workflow provides end-to-end event management with two main flows: Registration Flow: ⦁ Receives participant registration via webhook ⦁ Generates unique ticket ID and stores in Google Sheets ⦁ Creates QR code using the QR Code node ⦁ Sends confirmation email with QR code attached Check-in Flow: ⦁ Scans and decodes QR code at venue entrance ⦁ Validates ticket against participant database ⦁ Blocks duplicate check-ins with clear error messages ⦁ Sends Slack notification for VIP arrivals ⦁ Returns real-time attendance statistics Setup 1. Create a Google Sheet with columns: Ticket ID, Event ID, Name, Email, Ticket Type, Registered At, Checked In, Check-in Time 2. Connect your Google Sheets and Gmail credentials 3. Configure Slack for VIP notifications 4. Set up the webhook URLs in your registration form Requirements ⦁ Google Sheets (participant database) ⦁ Gmail account (confirmation emails) ⦁ Slack workspace (VIP notifications) How to customize ⦁ Add capacity limits by checking row count before registration ⦁ Modify QR code size and format in the QR Code node ⦁ Add additional ticket types beyond VIP/standard ⦁ Integrate with payment systems for paid events

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 - Sticky Note

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

Block 2 - Sticky Note1

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

Block 3 - Sticky Note2

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

Block 4 - Sticky Note3

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

Block 5 - Sticky Note4

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

Block 6 - Registration Webhook

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

Block 7 - Create Ticket Data

Type / Role
n8n-nodes-base.set - set
Config choices
Version 3.4

Block 8 - Save to Participants Sheet

Type / Role
n8n-nodes-base.googleSheets - googleSheets
Config choices
Version 4.5

Block 9 - Prepare QR Payload

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

Block 10 - Generate QR Code

Type / Role
n8n-nodes-base.httpRequest - httpRequest
Config choices
Version 4.2

Block 11 - Send Ticket Email

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

Block 12 - Registration Success

Type / Role
n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices
Version 1.1

Block 13 - Check-in Webhook

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

Block 14 - Decode QR Code

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

Block 15 - Is Valid QR?

Type / Role
n8n-nodes-base.if - if
Config choices
Version 2.2

Block 16 - Lookup Ticket in DB

Type / Role
n8n-nodes-base.googleSheets - googleSheets
Config choices
Version 4.5

Block 17 - Validate Check-in

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

Block 18 - Check-in Allowed?

Type / Role
n8n-nodes-base.if - if
Config choices
Version 2.2

Block 19 - Mark as Checked In

Type / Role
n8n-nodes-base.googleSheets - googleSheets
Config choices
Version 4.5

Block 20 - Is VIP?

Type / Role
n8n-nodes-base.if - if
Config choices
Version 2.2

Block 21 - Slack VIP Alert

Type / Role
n8n-nodes-base.slack - slack
Config choices
Version 2.2

Block 22 - Merge VIP Path

Type / Role
n8n-nodes-base.merge - merge
Config choices
Version 3

Block 23 - Build Success Response

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

Block 24 - Check-in Success

Type / Role
n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices
Version 1.1

Showing the first 24 of 26 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow Automate event registration and QR check-ins with Google Sheets, Gmail, and Slack
Complexity advanced
Nodes 26
Categories Miscellaneous
Author masahiro hanawa
Published 15 Dec 2025

4. Reproducing the Workflow from Scratch

  1. 1. Download the workflow JSON

    Use the JSON export at /data/workflows/11821/11821.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 Automate event registration and QR check-ins with Google Sheets, Gmail, and Slack do?

Who is this for? This template is ideal for event organizers, conference managers, and community teams who need an automated participant management system. Perfect for workshops, conferences, meetu...

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 Miscellaneous use case.