GuidesJanuary 18, 20262 min readWaply Team

Complete Guide to WhatsApp Business API Setup in 2026

Learn how to set up WhatsApp Business API for your company. Step-by-step guide covering requirements, Meta Business verification, and integration.

#whatsapp#api#business#setup#meta#integration

WhatsApp Business API Setup Guide

WhatsApp Business API lets you automate conversations, integrate with CRM systems, and handle thousands of messages at scale.

API vs Business App

FeatureBusiness AppBusiness API
PriceFreePay-per-conversation
Devices1-5Unlimited
AutomationBasicFull chatbot support
Broadcast256 contactsUnlimited

Requirements

Before you start, you need:

  • A registered business with website
  • Facebook Business Manager account
  • Phone number not on WhatsApp
  • A platform like Waply (or developer resources)

Quick Setup with Waply

The fastest way to get WhatsApp API running:

  1. Sign up at waply.io
  2. Go to Settings > Integrations
  3. Click Install on WhatsApp
  4. Login with Facebook and select your business
  5. Verify with OTP - Done!

📖 Step-by-step guide: How to Connect WhatsApp to Waply

API Access

Need custom integrations? After installing WhatsApp:

  1. Go to Settings > API
  2. Generate your API Key
  3. Use our RESTful endpoints
Waply API SettingsLoading...
Waply API Settings
curl -X POST https://api.waply.io/v1/messages \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{"to": "+1234567890", "text": "Hello!"}'

Pricing

WhatsApp uses conversation-based pricing:

TypeCost (approx.)
Marketing$0.025
Utility$0.015
Authentication$0.014
ServiceFree (1,000/month)

Message Templates

For outbound messages, you need approved templates:

Hi {{1}}, your order #{{2}} is confirmed!
Delivery: {{3}}
Track: {{4}}

Tips:

  • Keep it short and clear
  • Add opt-out for marketing
  • Use personalization

Best Practices

Do:

  • Get explicit opt-in consent
  • Respect time zones
  • Respond quickly

Don't:

  • Spam customers
  • Send unsolicited marketing
  • Ignore unsubscribe requests

Common Issues

ProblemSolution
Number in useRemove from WhatsApp app, wait 24h
Template rejectedCheck Meta guidelines, fix category
Messages not sentVerify number format with country code

Get Started

  1. Sign up for Waply
  2. Connect WhatsApp
  3. Start messaging!

Ready to get started? Book a demo to see it in action.