Manage online bookings with webhook, Gmail, Google Calendar and Slack — n8n Workflow

High complexity🔗 Webhook26 nodes🏷️ Miscellaneousby Manu

Overview

Receive booking requests via webhook with automatic validation, duplicate detection, availability checking, confirmation emails, Google Calendar sync, and Slack notifications.

WHAT IT DOES:

Accepts booking requests (name, email, date, time, service type, party size) via webhook Validates all required fields and email format Checks for duplicate bookings within 24 hours for the same customer Verifies slot availability against your database Generates unique confirmation code (BOOK-timestamp-rand

Nodes used

HTTP RequestSlackGoogle CalendarGmailCode

Workflow Preview

⚡
W
Webhook - New Booking
Validate Booking
I
IF - Valid Request
Format Validation Error
⚡
R
Respond - Validation Error
API - Check Duplicates
I
IF - Not Duplicate
Format Duplicate Error
⚡
R
Respond - Duplicate
API - Check Availability
I
IF - Available
Format Unavailable
⚡
R
Respond - Unavailable
API - Create Booking
Format Email
Send Confirmation Email
Prepare Calendar Event
Create Calendar Event
Slack - Notify Team
Prepare Audit Entry
API - Log Audit
Format Success
⚡
R
Respond - Success
⚡
E
Error Trigger
Format Error
Slack - Error Alert
26 nodes24 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a webhook trigger.

  2. 2

    Process

    Data flows through 26 nodes, connecting code, errortrigger, gmail.

  3. 3

    Output

    The workflow completes its automation and delivers the result to the configured destination.

Node Details (26)

HT

HTTP Request

httpRequest

#1
SL

Slack

slack

#2
GO

Google Calendar

googleCalendar

#3
GM

Gmail

gmail

#4
CO

Code

code

#5

How to Import This Workflow

  1. 1Click Download JSON button on the right to save the workflow file.
  2. 2Open your n8n instance. Go to Workflows → New → Import from file.
  3. 3Select the downloaded manage-online-bookings-with-webhook-gmail-google-calendar-and-slack file and click Import.
  4. 4Set up credentials for each service node (API keys, OAuth, etc.).
  5. 5Click Test Workflow to verify everything works, then activate it.

Or paste directly in n8n → Import from JSON:

{ "name": "Manage online bookings with webhook, Gmail, Google Calendar and Slack", "nodes": [...], ...}

Integrations

codeerrortriggergmailgooglecalendarhttprequestifrespondtowebhookslackwebhook

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes26
Complexityhigh
Triggerwebhook
CategoryMiscellaneous

Created by

Manu

Manu

@manu

Tags

codeerrortriggergmailgooglecalendarhttprequestifrespondtowebhookslackwebhook
⚡

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