Send bulk WhatsApp messages from Google Sheets using WasenderAPI

WhatsApp Bulk Message Broadcast From Google Sheet (Unofficial API)

Who’s it for

This workflow is designed for marketers, small business owners, freelancers, and support teams who want to automate WhatsApp messaging using a Google Sheet without paying for the WhatsApp Business API. Ideal for those who need a budget-friendly and scalable bulk messaging solution using their personal or business WhatsApp number.

How it works / What it does

This workflow reads a Google Sheet for rows where the Status column is set to pending, sends a message via the connected WhatsApp number using the WasenderAPI, and updates the message status to sent. It repeats this process every 10 seconds while maintaining a safe API rate limit.

How to set up

1. Duplicate the Sample Sheet: Use this format [Sample Sheet](https://docs.google.com/spreadsheets/d/1Ui4TzzI-Gq-bsEsrZELwW1Kyddw0IU9L1wxlHikktqw/edit?usp=sharing). 2. Fill contacts: Add WhatsApp numbers, names, and messages. Set the Status column to pending. 3. Connect Google Sheets in the n8n node. 4. Subscribe to WasenderAPI and get your API key. 5. Paste API Key into the HTTP node (if using unofficial API). 6. Activate your workflow in n8n.

Requirements