Getting Started with WhatsApp Business API in 2026

WhatsApp Business API lets you send messages at scale to your customers. In this guide, we'll walk through everything you need to know to get started.

Step 1: Register your business

You'll need a verified Meta Business account and a phone number that's not in use on regular WhatsApp.

Step 2: Get approved

Meta reviews your business documents — typically takes 2-3 business days.

Step 3: Connect to mPost

Once approved, paste your access token and phone number ID into mPost settings. You're live!