How to Send OTP via WhatsApp Using Bulkwise Automations

🔹 Step 1: Open WhatsApp Manager

Go to 👉 business.facebook.com/wa/manage

Click “Manage Templates” to begin.

🔹 Step 2: Create an Authentication Template

• Choose the Authentication template type.
• Click Next.
• Enter a Template Name.
• Click Copy Code (used later during mapping).
• Click Submit.

🔹 Step 3: Map the Variables

1. Click the # icon under the Actions column to open Map Variables.
2. Under Body Variables and Button Variables, select the same variable (for OTP).

This ensures the code appears both in the message body and button.

If didn't Have Template Vairables , Create it first by Below the Message Templates Settings

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🔹 Step 4: Open API Developer Section

• Click the API Developer option from the side menu.
• Choose Send Message.

If you haven’t already, Generate API Key and then Click Send Message.

🔹 Step 5: Get the API Endpoint

• Select your newly created Authentication Template.
• Enter dummy OTP values in the input fields.
• Click Get API Endpoint.

You’ll receive:

• ✅ API Token
• ✅ Phone Number ID
• ✅ Template Name & ID
• ✅ Complete JSON Payload

🔹 Step 6: Use the API to Send OTPs

You can use this with:

• Custom backend code (Node.js, PHP, Python)
• Automation tools (like n8n, Zapier, or Postman)
• Chatbot builders or CRM tools

🚀 Conclusion

With Bulkwise,

• Use this API to send OTPs during login, user registration, or any secure action.
• Meta’s WhatsApp Business API is secure, scalable, and officially supported.

🛠️ This setup is perfect for developers, SaaS builders, and businesses looking to automate secure communication.