WhatsApp Business is the version of WhatsApp built specifically for companies to communicate with customers professionally, organized and — when volume grows — automatically via API. Over
200 million businesses worldwide use WhatsApp Business as their official customer service, sales and marketing channel.
What WhatsApp Business is in one sentence
It's the business version of WhatsApp: same familiar app, but with company profile, catalog, auto-replies and — for those needing scale — an official API that connects WhatsApp to your internal systems.
What WhatsApp Business is for
Companies use WhatsApp Business for:
- Customer support — answer questions, resolve issues
- Transactional notifications — order confirmations, delivery status, reminders
- Identity verification (OTP) — security codes for login
- Sales and catalog — show products, close orders via chat
- Direct marketing — promotions, launches (always with opt-in)
- Post-sales — satisfaction surveys, warranty
The two versions of WhatsApp Business
There are two ways to use WhatsApp Business. Pick wrong and you waste time or money.
1. WhatsApp Business app (free)
- Free download on Play Store / App Store
- Runs on one phone
- Good for up to ~50 conversations/day
- Has business profile, catalog, labels, quick replies
- Doesn't integrate with CRM or systems
Who uses it: brick-and-mortar shops, freelancers, solopreneurs.
2. WhatsApp Business API
- Access through official providers (BSPs) like Zavu
- No practical message limit
- Multiple agents on the same number
- Integrates with CRM, e-commerce, custom apps
- Allows AI agents answering automatically
- Charges per conversation ($0.005–$0.025 in US)
Who uses it: e-commerce, fintech, SaaS, high-volume businesses.
How much WhatsApp Business costs
Free app: $0.
Official API: pay per initiated 24h conversation. Meta categories for 2026 (US):
| Utility | Transactional notifications | ~$0.015 |
|---|
| Authentication | OTPs, verification codes | ~$0.005 |
|---|
| Marketing | Promotions, launches | ~$0.025 |
|---|
| Service | When customer initiates | $0.00 |
|---|
Providers like Zavu charge only Meta's cost, no markup. You
see full pricing before starting.
How to get started with WhatsApp Business
For micro-businesses (app)
Download WhatsApp Business from Play Store or App StoreRegister your business phone numberConfigure profile: name, category, address, hours, websiteAdd greeting and away messagesCreate your catalog with products and pricesFor volume businesses (API)
Create free account at zavu.devConnect your Meta Business account (no documents, 5 min)Verify the number you'll use (must be outside the app)Create and submit your templates for Meta approval (24-48h)Send your first message in 5 lines of codeImportant limitations
- 24-hour window: you can only send free-form messages within 24h of the customer replying. Outside that, you need approved template.
- Marketing content in Utility templates isn't allowed — gets moved to Marketing (more expensive).
- Multiple agents on free app: doesn't work. You need the multi-device feature or the API.
- Meta blocks: spam, inappropriate content and low message quality may cause Meta to limit your number.
WhatsApp Business vs competitors
| Feature | WhatsApp Business API | Instagram DM API | SMS |
|---|
| Read rate | 98% | 70% | 95% |
|---|
| Cost per message (US) | $0.005-0.025 | $0.005-0.020 | $0.05-0.10 |
|---|
| Rich media | Yes (video, PDF, buttons) | Yes | No |
|---|
| Pre-approved templates | Required | No | No |
|---|
For most cases in the US, WhatsApp is the most efficient channel because nearly everyone has it installed.
Why use an official provider over "unofficial WhatsApp"
There are tools promising to use WhatsApp without being an official BSP. Don't. Why:
- Meta bans numbers using unauthorized clients
- You lose history and get no support
- No verified green badge
- Permanent number ban risk
Official providers like
Zavu, Twilio, MessageBird and Infobip follow Meta's protocol and provide continuity guarantee.
Conclusion
WhatsApp Business is, practically, two products: a
free app to start and a
paid API to scale. Most US companies start with the app and move to the API when they hit ~100 conversations/day or need CRM integration. Providers like Zavu make that migration in hours with no setup cost. If you still handle customers manually with low volume, stay on the app — it's genuinely good. When volume grows,
the API awaits.