Schedule appointments from a booking form with Google Calendar and Gmail

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1. Workflow Overview

How it works This workflow creates a complete appointment booking system — no external scheduling tools needed. It serves a styled HTML booking form via webhook, checks your Google Calendar for ava...

Best for

Support Chatbot automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.code, n8n-nodes-base.respondtowebhook, n8n-nodes-base.gmail, n8n-nodes-base.googlecalendar, n8n-nodes-base.webhook, 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 Theodoros Mastromanolis.

Original n8n.io source

1.1 Workflow description

Title: Schedule appointments from a booking form with Google Calendar and Gmail
Workflow name: Schedule appointments from a booking form with Google Calendar and Gmail

How it works

This workflow creates a complete appointment booking system — no external scheduling tools needed. It serves a styled HTML booking form via webhook, checks your Google Calendar for availability, and lets visitors pick an open 30-minute slot. On submission, it creates a calendar event, sends a confirmation email via Gmail, and shows a success page.

A GET webhook serves the booking page, which reads your Google Calendar to show only open time slots for the next 30 days
Visitors pick a date/time, fill in their name, email, and an optional message, then submit
A POST webhook receives the form, calculates the end time, creates a Google Calendar event, and sends a styled HTML confirmation email with an "Add to Calendar" link
The visitor sees a branded success page confirming their booking

Set up steps

Google Calendar OAuth2 — Connect your Google account with Calendar read/write access. Takes ~5 minutes if you already have OAuth credentials in Google Cloud Console.
Gmail OAuth2 — Connect your Gmail account for sending confirmation emails. Can reuse the same Google OAuth app.
Configure your availability — In the "Calculate Available Slots" node, adjust workingDays (default: Mon–Fri), startHour/endHour (default: 9 AM–2 PM), slotDuration (default: 30 min), and the timezone offset (default: +02:00 for EET).
Activate the workflow — The booking form will be live at your n8n instance's webhook URL: your-n8n-url/webhook/booking
Optional: Customize branding — Edit the HTML/CSS in the "Build HTML Form" and "Show Success Message" nodes to match your brand colors and copy.

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 - Code in JavaScript

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

Block 2 - Show Success Message

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

Block 3 - Send Confirmation Email

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

Block 4 - Format Email Data

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

Block 5 - Create Calendar Event

Type / Role: n8n-nodes-base.googleCalendar - googleCalendar
Config choices: Version 1.2

Block 6 - Webhook - Submit Form

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

Block 7 - Respond to Webhook

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

Block 8 - Build HTML Form

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

Block 9 - Calculate Available Slots

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

Block 10 - Get Calendar Events

Type / Role: n8n-nodes-base.googleCalendar - googleCalendar
Config choices: Version 1.2

Block 11 - Webhook - Show Form

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

Block 12 - Sticky Note

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

3. Summary Table

Workflow	Schedule appointments from a booking form with Google Calendar and Gmail
Complexity	intermediate
Nodes	12
Categories	Support Chatbot
Author	Theodoros Mastromanolis
Published	06 Mar 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/13923/13923.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

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

Download workflow JSON Original n8n.io source Support Chatbot workflows

Frequently asked questions

What does Schedule appointments from a booking form with Google Calendar and Gmail do?

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 Support Chatbot use case.

Theodoros Mastromanolis

3 workflows

Nodes

n8n-nodes-base.code n8n-nodes-base.respondtowebhook n8n-nodes-base.gmail n8n-nodes-base.googlecalendar n8n-nodes-base.webhook n8n-nodes-base.stickynote

Complexity

intermediate

Published 06 Mar 2026

Likes 0

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Install path: /data/workflows/13923/13923.json

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Schedule appointments from a booking form with Google Calendar and Gmail

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How it works

Set up steps

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Code in JavaScript

Block 2 - Show Success Message

Block 3 - Send Confirmation Email

Block 4 - Format Email Data

Block 5 - Create Calendar Event

Block 6 - Webhook - Submit Form

Block 7 - Respond to Webhook

Block 8 - Build HTML Form

Block 9 - Calculate Available Slots

Block 10 - Get Calendar Events

Block 11 - Webhook - Show Form

Block 12 - Sticky Note

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions