WhatsApp APIs built for developers
Build WhatsApp-powered business experiences with reliable messaging APIs, webhooks, automation and an AI-ready infrastructure layer — without building the messaging infrastructure yourself.
The API infrastructure behind business conversations
Connect your application, CRM, website or SaaS platform to Sellnexia. Send and receive WhatsApp messages, manage templates, receive real-time webhooks and trigger business workflows through one API platform.
Built to get you to production faster
Production-ready WhatsApp infrastructure
Let Sellnexia handle messaging infrastructure, delivery tracking, webhook processing and operational complexity.
Developer-first API
Use secure API keys, clear endpoints, webhooks, usage tracking and developer documentation.
Automation-ready
Connect WhatsApp events to CRM and business workflows without building the automation layer from scratch.
AI-ready architecture
Extend your messaging workflows with Sellnexia AI capabilities as they become available.
Built to scale
Choose higher limits, dedicated infrastructure and enterprise support as your messaging volume grows.
Managed onboarding
Get guided onboarding for your WhatsApp Business Platform integration and production setup.
Connect your application to WhatsApp
Your Application
Your website, app, CRM or SaaS sends an API request.
Sellnexia API
Sellnexia authenticates, processes and routes the request.
WhatsApp Business Platform
The message is delivered through the WhatsApp infrastructure.
Webhooks
Delivery, read, reply and other supported events are sent back to your application.
Built for every industry
E-commerce
Order confirmations, delivery updates and customer support.
Real Estate
Lead capture, qualification and sales follow-ups.
Education
Enquiry handling, admissions communication and reminders.
Healthcare
Appointment confirmations and reminders.
SaaS
Product events, alerts and customer notifications.
Logistics
Delivery and shipment updates.
Travel
Booking confirmations and travel reminders.
Enterprise
Internal alerts, customer workflows and system integrations.
Simple, tiered pricing
Three simple tiers — Standard, Business API and Enterprise — with pricing that scales as you build, automate and grow.
View Full PricingRequest API Access
Sales-assisted onboarding. Tell us about your business and our team will follow up with next steps.
Request API Access
Tell us about your business and our team will reach out to discuss the right plan for you.
This is a sales-assisted process. Our team will follow up to confirm final terms.