Automate event registration and QR check-ins with Google Sheets, Gmail, and Slack
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This workflow has 21 nodes and runs when an HTTP POST request hits its webhook URL (plus 1 other trigger). Along the way it connects Google Sheets, Gmail and Slack.
How it runs
Trigger: When an HTTP POST request hits its webhook URL (plus 1 other trigger).
- Create Ticket Data (Edit Fields (Set)): sets 7 fields: ticketId, eventId, participantName…
- Decode QR Code (Code): runs custom JavaScript code
- Save to Participants Sheet (Google Sheets): append
- Is Valid QR? (If): checks a condition and branches into true / false
- Prepare QR Payload (Code): runs custom JavaScript code
- Lookup Ticket in DB (Google Sheets): get many
- Invalid QR Response (Respond to Webhook): sends the response back to the webhook caller
- Generate QR Code (HTTP Request): calls an HTTP API
- Validate Check-in (Code): runs custom JavaScript code
- Send Ticket Email (Gmail): uses Gmail
…plus 9 more steps. See the full node list below.
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (10)
- Webhook
n8n-nodes-base.webhook - Edit Fields (Set)
n8n-nodes-base.set - Google Sheets
n8n-nodes-base.googleSheets - Code
n8n-nodes-base.code - HTTP Request
n8n-nodes-base.httpRequest - Gmail
n8n-nodes-base.gmail - Respond to Webhook
n8n-nodes-base.respondToWebhook - If
n8n-nodes-base.if - Slack
n8n-nodes-base.slack - Merge
n8n-nodes-base.merge
From the author
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.…