Verify WhatsApp numbers in bulk using Google Sheets & WasenderAPI

Bulk WhatsApp Number Verification via Unofficial API

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.

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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