Event signup → automatic calendar invite

People who register for your webinar or event get a Google Calendar invite instantly.

Easy Saves ~3 hours/month MarketingBy Flowngn team

Works with n8n · Make · Zapier

Grow your audience

How it works

Trigger: Webhook — registration form submitted

Receive the attendee's name and email.
Add them as a guest to your event in Google Calendar (they get an invite).
Log the registration in a sheet.

Diagram

Trigger App

Build it

Pick your tool — same automation, step by step.

Copy and paste straight into an n8n canvas (Ctrl+V), or download and use Import from File. Then connect your own credentials and replace every YOUR_… placeholder.

Workflow JSON

Show code (131 lines)

{
  "name": "Event signup → automatic calendar invite (Flowngn)",
  "nodes": [
    {
      "parameters": {
        "content": "## Event signup → automatic calendar invite\nPeople who register for your webinar or event get a Google Calendar invite instantly.\n\n**Setup**\n1. Open each node and connect your own credentials.\n2. Replace every YOUR_… placeholder.\n3. Test once, then activate.\n\nFree template from Flowngn",
        "height": 260,
        "width": 340
      },
      "id": "22e073b5-5396-44a5-a7e7-c44fe102e676",
      "name": "Setup notes",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -420,
        -60
      ]
    },
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "register",
        "options": {}
      },
      "id": "22e073b5-5396-44a5-a7e7-c44fe102e676",
      "name": "Registration",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [
        0,
        0
      ],
      "webhookId": "22e073b5-5396-44a5-a7e7-c44fe102e676"
    },
    {
      "parameters": {
        "operation": "update",
        "calendar": {
          "__rl": true,
          "value": "primary",
          "mode": "id"
        },
        "eventId": "YOUR_EVENT_ID",
        "useDefaultReminders": true,
        "updateFields": {
          "attendeesUi": {
            "values": {
              "mode": "add",
              "attendees": [
                "={{ $json.body.email }}"
              ]
            }
          },
          "sendUpdates": "all"
        }
      },
      "id": "22e073b5-5396-44a5-a7e7-c44fe102e676",
      "name": "Add guest to event",
      "type": "n8n-nodes-base.googleCalendar",
      "typeVersion": 1.3,
      "position": [
        300,
        0
      ]
    },
    {
      "parameters": {
        "operation": "append",
        "documentId": {
          "__rl": true,
          "value": "YOUR_SPREADSHEET_ID",
          "mode": "id"
        },
        "sheetName": {
          "__rl": true,
          "value": "Registrations",
          "mode": "name"
        },
        "columns": {
          "mappingMode": "defineBelow",
          "value": {
            "date": "={{ $now.toISO() }}",
            "name": "={{ $('Registration').item.json.body.name }}",
            "email": "={{ $('Registration').item.json.body.email }}"
          }
        },
        "options": {}
      },
      "id": "22e073b5-5396-44a5-a7e7-c44fe102e676",
      "name": "Log registration",
      "type": "n8n-nodes-base.googleSheets",
      "typeVersion": 4.5,
      "position": [
        600,
        0
      ]
    }
  ],
  "connections": {
    "Registration": {
      "main": [
        [
          {
            "node": "Add guest to event",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Add guest to event": {
      "main": [
        [
          {
            "node": "Log registration",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "meta": {
    "templateCredsSetupCompleted": false
  },
  "tags": []
}

Open in the playground to edit →

Tips

Enable "Send updates to all guests" so invites are emailed automatically.

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