WhatsApp Business API Integration
WhatsApp Business API integration connects your existing systems to billions of users. We handle the technical complexity: webhook reliability, rate limit management, template approvals, and the quirks of Meta's API. We have dealt with their API changes so you do not have to.
The Technical Reality
WhatsApp Business API integration sounds straightforward until you hit the details. Rate limits that change based on your quality score. Webhooks that need to return 200 OK within seconds or face retries. Message templates that require approval and have strict formatting rules. Session windows that expire after 24 hours.
We build integrations that handle these edge cases. Our team has connected WhatsApp to CRMs, ERPs, custom databases, and legacy systems across multiple industries. We know when to use the Cloud API versus On-Premise, how to structure webhook handlers for reliability, and how to build queueing systems that respect rate limits without dropping messages.
This is developer-to-developer work. If you need someone to explain what webhooks are, we are probably not the right fit. If you need engineers who can ship a production integration that handles edge cases gracefully, let us talk.
Integration Capabilities
Connect WhatsApp to your existing tech stack with bidirectional data flow.
CRM Integration
Connect WhatsApp conversations to Salesforce, HubSpot, Pipedrive, or custom CRM systems. Bi-directional sync of contacts, conversation history, and deal updates.
ERP & Backend Systems
Link WhatsApp to your ERP, inventory management, and order systems. Real-time order status updates, shipping notifications, and inventory alerts.
Helpdesk Integration
Route WhatsApp messages to Zendesk, Freshdesk, Intercom, or custom ticketing systems. Unified agent view with conversation threading and escalation rules.
Custom Database Sync
Direct integration with your PostgreSQL, MongoDB, or custom databases. Real-time event triggers and scheduled batch synchronization for high-volume operations.
Technical Challenges We Solve
The integration issues that cause production incidents and message loss.
Rate Limit Management
WhatsApp enforces strict rate limits that vary by message type and quality tier. We build queueing systems with backpressure handling, retry logic, and priority routing.
Webhook Reliability
Webhooks can fail, retry, or arrive out of order. We implement idempotent handlers, message deduplication, and dead letter queues for missed events.
Template Approval Workflow
Message templates require Meta approval and have specific formatting rules. We build template management systems with versioning and approval tracking.
Failover Architecture
When the API has issues, your messages still need to go out. Circuit breakers, fallback queues, and multi-region deployment for resilience.
Cloud API vs On-Premise API
Choose the deployment model that fits your requirements.
Cloud API
- Faster setup, Meta-hosted infrastructure
- Automatic updates and scaling
- Lower operational overhead
- Suitable for most business use cases
On-Premise API
- Full control over message routing
- Data residency compliance
- Higher throughput for enterprise scale
- Custom retention and encryption policies
Not sure which is right? Cloud API works for most businesses. On-Premise makes sense for enterprise scale, data residency requirements, or custom security policies. We can assess your requirements and recommend the appropriate approach.
Our Integration Process
From technical discovery to production deployment with monitoring.
Technical Discovery
Review your existing systems, data models, and message flows. Define integration points, authentication, and error handling requirements.
Architecture & Build
Design webhook handlers, queue systems, and API connections. Build with idempotency, retry logic, and rate limit handling from day one.
Test & Deploy
End-to-end testing with sandbox and production environments. Staged rollout with monitoring, alerting, and runbooks for incident response.
Why Hexmount for WhatsApp Integration
Senior engineers who ship production integrations, not consultants who hand off documentation.
We Ship Code
Not slides or architecture diagrams. Working integrations that handle production traffic and edge cases.
API Experience
We have built integrations for fintech, crypto, and enterprise systems. Complex data flows are our specialty.
24/7 Coverage
Distributed team across timezones. When something breaks at 3 AM, someone is awake and working on it.
Related Services
Explore our other integration and automation capabilities.
Ready to Integrate WhatsApp?
Tell us about your systems and integration requirements. CRM sync, order notifications, support automation. We build the connection layer that makes it work.
We respond within 24 hours to discuss your technical requirements.