Who’s it for

This workflow is perfect for marketers, CRM managers, support teams, and data verification agents who need to bulk-check WhatsApp number validity without using the official WhatsApp Business API. It is ideal for teams seeking an affordable and scalable way to clean or validate phone number lists from Google Sheets.

Overview

This n8n workflow verifies unlimited WhatsApp numbers from a Google Sheet using your own WhatsApp number through the WasenderAPI.com platform.

How it works / What it does Fetches real-time data from Google Sheets Verifies if a number is registered on WhatsApp Implements delay and batch processing to maintain rate limits Updates verification status back to the Google Sheet Requirements

Before setting up the workflow, ensure you have:

An active WhatsApp Account (Personal or Business) Google Sheets API configured within your n8n instance A properly structured Google Sheet, like a sample sheet (Included with the workflow template) A WasenderAPI.com subscription (starting from ~$6/month) Google Sheet Format

Use this sample sheet as your base.

WhatsApp No Verified/Unverified Status +8801XXXXXXX (empty) (empty) Ensure the Status column is initially blank for unverified rows.

Workflow Highlights: Triggers every 5 Minutes Reads pending contact from Google Sheets Verify WhatsApp number using WasenderAPI or WhatsApp Cloud API Updates each row’s Status to Checked