Automatically Send WhatsApp Discount Codes to Shopify Customers Using Rapiwa

Description

Automatically Send WhatsApp Discount Codes to Shopify Customers Using Rapiwa

Who is this for?
This n8n workflow automatically sends WhatsApp promotional messages to top customers whenever a new discount code is created in Shopify. It’s perfect for store owners, marketers, sales teams, or support agents who want to engage their best customers effortlessly. The workflow fetches customer data, filters high-spending customers, verifies their WhatsApp numbers using the Rapiwa API, sends discount messages to verified contacts, and logs all activity in Google Sheets. Designed for non-technical users who don’t use the official WhatsApp Business API, this automation simplifies customer outreach and tracking without any manual work.

What this Workflow Does
This n8n workflow connects with a Google Sheet that contains a list of contacts. It reads rows marked for processing, cleans the phone numbers, checks their validity using Rapiwa's WhatsApp validation API, sends WhatsApp messages to valid numbers, and updates the status of each row accordingly.

Key Features
Runs Every 5 Minutes**: Automatically triggers the workflow
Google Sheets Integration**: Reads and writes data from a specific sheet
Phone Number Validation**: Confirms if a WhatsApp number is active via Rapiwa API
Message Sending**: Sends a message using Rapiwa's /send-message endpoint
Status Update**: Sheet is updated with success or failure status
Safe API Usage**: Delays added between requests to prevent rate limits
Batch Limit**: Processes max 60 rows per cycle
Conditional Checks**: Skips rows without a "check" value

Requirements
A Google Sheet with necessary columns
Rapiwa account** with active subscription (you can free 200 message)
Your WhatsApp number connected to Rapiwa
Valid Bearer Token
n8n Instance** (self-hosted or cloud)
Google Sheets node configured
HTTP Request node access

How to Use
Step-by-Step Setup

Webhook
Receives Shopify Webhook (discount creation) via HTTP POST request.
This is triggered when a discount is created in your Shopify store.

Configure Google Sheets in n8n
Use the Google Sheets node with OAuth2 access

Get Rapiwa API Token
Create an account on Rapiwa
Connect your WhatsApp number
Copy your Bearer Token from the Rapiwa dashboard

Set Up HTTP Request Nodes
Validate number via: https://app.rapiwa.com/api/verify-whatsapp
Send message via: https://app.rapiwa.com/api/send-message
Add your bearer token to the headers

Google Sheet Column Structure
A Google Sheet** formatted like this ➤ Sample


| discount_code | created_at | shop_domain | name | number | verify | status |
| -------------------------------------------- | ------- | ------------------------- | ----------------------- | -------------- | ------------- | ---------- | -------- |
| V8ZGVRDFP5TB | 2025-09-25T05:26:40-04:00 | your_shop_domain | Abdul Mannan | 8801322827798| unverified | not sent |
| V8ZGVRDFP5TB | 2025-09-25T05:26:40-04:00 | your_shop_domain | Abdul Mannan | 8801322827799| verified | sent |

Support & Help
Rapiwa Website:** https://rapiwa.com
WhatsApp**: Chat on WhatsApp
Discord**: SpaGreen Community
Facebook Group**: SpaGreen Support
Website**: https://spagreen.net
Developer Portfolio**: Codecanyon SpaGreen