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Sendwise

Sendwise

Live

WhatsApp API platform for businesses. Connect multiple numbers, send messages at scale, and receive real-time webhooks.

0
Requests tested
Zero errors
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Concurrent users
Peak load
0ms
Avg response
Under load
0%
Error rate
At peak
Core Features

Everything you need for WhatsApp at scale.

Multi-Number Management

Connect and manage thousands of WhatsApp numbers. Each runs in its own isolated process.

Message API

Send text, images, documents, audio, video, and location messages with status tracking.

Real-Time Webhooks

Receive incoming messages, status callbacks, and connection events with signature verification.

Multi-Tenant Architecture

Each organization gets isolated resources. Process-per-user model ensures total isolation.

Enterprise Security

2FA, API key authentication, webhook signing, email verification, and lockout protection.

Production Ready

PM2 process management, Nginx reverse proxy, SSL, systemd integration, auto-reconnection.

Usage Analytics

Track message volumes, API usage, and connection health. Built-in rate limiting per plan.

CRM Integration

Webhook-based integration with any CRM. Store conversations with full history sync.

Performance Optimized

Ring buffer stores, org-indexed SSE, concurrency-limited webhooks, async throughout.

Architecture

How Sendwise works.

Your Application
REST API Call

Your CRM or app sends a request to the Sendwise API with the message payload.

WhatsApp
Message Delivered

Delivered via WhatsApp Web protocol. Status callbacks and replies flow back through webhooks.

Developer Experience

Simple, powerful API.

Send a message
POST /api/messages/send

{
  "number": "905551234567",
  "message": "Hello from Sendwise!"
}

// Response
{
  "success": true,
  "messageId": "3EB0A8C2F1..."
}
Send text, images, documents, audio, and video
Receive messages via real-time webhooks
Track message delivery status
Manage multiple numbers per organization
QR code pairing — no business API application needed
Auto-reconnection on disconnect
Full conversation history sync
Webhook signature verification

Ready to scale your WhatsApp messaging?

Get started with Sendwise today. Request early access or talk to our team about your use case.