WhatsApp Business API
A programmatic interface from Meta that lets businesses send and receive WhatsApp messages at scale through a third-party platform.
Last updated: 2026-05-03
Definition
WhatsApp Business API is the enterprise-tier interface that lets businesses integrate WhatsApp into their software stack — CRMs, helpdesks, e-commerce platforms, marketing tools — and exchange messages programmatically with thousands of customers concurrently. Unlike the free WhatsApp Business App, the API has no per-device limit, supports message templates approved by Meta, accepts incoming and outgoing webhooks, and prices conversations on a usage basis. The API is offered in two flavours: the Cloud API hosted by Meta itself, and the legacy On-Premise API (deprecated for new customers since 2024). Businesses access the API through a Business Solution Provider such as WatEase.
How it applies in India
In India, the WhatsApp Business API is the only viable option for any business sending more than a few hundred outbound messages per day, because the WhatsApp Business App caps broadcast lists at 256 contacts and ties the account to a single mobile device. Indian D2C brands, banks, hospitals, education providers, and retailers route all transactional notifications, marketing broadcasts, and conversational support through the API via BSPs like WatEase, with conversation costs paid in INR through the BSP rather than directly to Meta.
Frequently asked questions
Is the WhatsApp Business API free?
The API access itself is free — Meta does not charge a platform fee. Costs are per-conversation and depend on category (Marketing, Utility, Authentication, Service) and country. India rates as of 2026: Marketing ~₹0.78 per conversation, Utility ~₹0.114, Authentication ~₹0.114, Service free inside the 24-hour service window. Most BSPs add a small platform fee on top.
Do I need approval from Meta to use the WhatsApp Business API?
Yes. Your business must complete Meta Business Verification, your phone number must be approved, and every Marketing/Utility/Authentication template must be reviewed and approved by Meta before it can be sent. WatEase walks new merchants through this in the onboarding flow.
Related terms
- WhatsApp Business AppThe free mobile app from Meta for small businesses to manage customer conversations, with built-in catalog, labels, and quick replies — but no API or broadcast scale.
- WhatsApp Business Solution Provider (BSP)A Meta-authorised third-party platform that resells WhatsApp Business API access to merchants, handling onboarding, billing, and support.
- WhatsApp Business Account (WABA)A logical container in Meta Business Manager that owns one or more WhatsApp phone numbers and the templates, settings, and billing attached to them.
- WhatsApp Cloud APIMeta's hosted version of the WhatsApp Business API — runs on Meta's infrastructure, eliminates self-hosted servers, and is the default for new accounts since 2022.
- Conversation-Based PricingMeta's pricing model for the WhatsApp Business API: businesses are charged per 24-hour conversation, with rates that depend on category and country.
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