WhatsApp Business API: Everything You Need to Know (2025)
The definitive guide to WhatsApp Business API. Learn about setup, pricing, templates, automation, and how to use WhatsApp for customer support and marketing.
In this guide
What is WhatsApp Business API?
WhatsApp Business API is the enterprise version of WhatsApp designed for medium and large businesses. Unlike the free WhatsApp Business App (limited to one device), the API allows:
- Multiple agents handling conversations simultaneously
- Integration with helpdesk, CRM, and business tools
- Automated messages and chatbots
- Broadcast messages to opted-in customers
- Green tick verification for brand trust
The API is not a standalone app - you access it through Business Solution Providers (BSPs) like Convo AI who provide the interface, automation tools, and support.
WhatsApp Business App vs API: Key Differences
WhatsApp Business App (Free)
- Single device only
- Limited automation (quick replies, away messages)
- No CRM integration
- Manual broadcast (limited to 256 contacts)
- Suitable for micro-businesses
WhatsApp Business API
- Unlimited agents and devices
- Full automation with chatbots
- CRM and helpdesk integration
- Broadcast to unlimited opted-in users
- Message templates for outbound
- Analytics and reporting
- Green tick verification available
- Suitable for growing businesses
If you have more than 2-3 people handling WhatsApp queries, or need automation, you need the API.
WhatsApp Business API Pricing (2025)
WhatsApp uses conversation-based pricing. You pay per 24-hour conversation window, not per message.
Conversation Categories:
1. Marketing Conversations (highest cost)
- Promotional broadcasts, offers, product launches
- India: ~₹0.80 per conversation
2. **Utility Conversations** (medium cost) - Order updates, shipping notifications, appointment reminders - India: ~₹0.35 per conversation
3. **Service Conversations** (lowest cost) - Customer-initiated support queries - India: ~₹0.35 per conversation
4. **Authentication Conversations** - OTPs and verification codes - India: ~₹0.30 per conversation
Free Tier: First 1,000 service conversations per month are free.
BSP Costs: Most BSPs (like Convo AI) charge a platform fee plus the WhatsApp conversation charges. Some offer free tiers to get started.
Setting Up WhatsApp Business API
Step 1: Choose a BSP
Select a Business Solution Provider that fits your needs. Consider:
- Ease of setup and use
- Features (automation, integrations)
- Pricing model
- Support quality
Step 2: Facebook Business Verification
You need a verified Facebook Business Manager account. This involves:
- Submitting business documents
- Verifying your business phone number
- Typically takes 2-5 business days
Step 3: WhatsApp Number Setup
- You can use a new number or migrate existing one
- Number must be able to receive SMS/voice for verification
- Once migrated to API, can't use WhatsApp App on that number
Step 4: Display Name Approval
Meta reviews your display name (what customers see). Must match your business name and can't be generic.
Step 5: Template Approval
Before sending outbound messages, create and get templates approved by Meta. Templates are pre-approved message formats for proactive outreach.
Step 6: Integration
Connect WhatsApp to your helpdesk, CRM, and e-commerce platform for full functionality.
Message Templates Explained
Templates are required for starting conversations with customers (outbound messages). They ensure businesses don't spam users.
Template Categories:
- Marketing: Promotions, offers, newsletters
- Utility: Order updates, shipping, appointments
- Authentication: OTPs, verification codes
Template Best Practices:
1. Keep messages concise and valuable
2. Include clear opt-out option for marketing
3. Use variables for personalization {{1}}, {{2}}
4. Add call-to-action buttons
5. Avoid promotional language in utility templates
Approval Timeline:
Most templates are approved within minutes. Complex or marketing templates may take 24-48 hours.
Common Rejection Reasons:
- Too promotional for utility category
- Missing opt-out for marketing
- Vague or unclear content
- Violating WhatsApp commerce policy
Automation and Chatbots on WhatsApp
WhatsApp API enables powerful automation:
Welcome Messages
Automatic greeting when customer messages first. Set expectations for response time.
Quick Replies
Pre-set responses for common queries. Agents click to send, saving time.
AI Chatbots
Train AI on your FAQs, product catalog, and policies. Handles 60-80% of queries without human intervention.
Order Tracking
Customers send order ID, bot fetches status from your system and responds instantly.
Appointment Booking
Bot collects details, checks availability, and confirms appointments.
Cart Recovery
Automated reminders for abandoned carts with product images and checkout links.
Best Practice: Always provide easy escalation to human agents. Don't trap customers in bot loops.
Green Tick Verification
The green tick (Official Business Account) builds trust and credibility.
Requirements:
- Active WhatsApp Business API account
- Notable, verified business (media coverage, established presence)
- Complete Facebook Business verification
- Consistent branding across platforms
How to Apply:
1. Ensure your account is in good standing
2. Apply through your BSP or Meta Business Manager
3. Provide supporting documentation
4. Wait for Meta review (can take weeks)
Tips for Approval:
- Have an established online presence
- Consistent branding across website and social media
- Press mentions or industry recognition help
- Clean messaging history on WhatsApp
Frequently Asked Questions
You pay per conversation (24-hour window). In India, service conversations cost ~₹0.35, marketing ~₹0.80. First 1,000 service conversations are free monthly. Plus, you pay your BSP's platform fee - many like Convo AI offer free tiers.
Yes, you can migrate your existing number to API. However, once migrated, you can't use the WhatsApp App on that number anymore. Many businesses use a new number for API to keep their personal WhatsApp separate.
With a good BSP, you can be live in 24-48 hours if your Facebook Business is already verified. If you need Facebook verification, add 2-5 business days. Template approvals are usually instant for utility templates.
BSPs provide the interface and tools for WhatsApp API. They differ in features (automation, integrations), pricing (some have free tiers), ease of use, and support quality. WhatsApp conversation charges are the same across BSPs.
Lower than Intercom, Drift, Crisp
AI chatbot from ₹0/month + per conversation