WhatsApp SaaS

How Does It Work?

FlazHost WhatsApp SaaS is a multi-tenant WhatsApp gateway. Each customer (workspace) can connect their business WhatsApp number — just like WhatsApp Web — then send and receive messages via dashboard, API, mass broadcast, and AI auto-reply.

Workflow: Register workspace → scan QR (like WA Web) → device online → send/receive messages via dashboard or API.

WhatsApp SaaS Features

Engine Mode

The WhatsApp engine can run in two modes:

• In-process (inproc) — Engine runs in the same process as the main app. Good for development.
• HTTP Worker — Engine runs in a separate worker. More stable — if the worker crashes, the main app is unaffected. Recommended for production.

Message Broker (Redis)

Events from the engine (QR, status, incoming messages) are communicated from the worker to the main app via Redis pub/sub. Real-time to browser via WebSocket.

Multi-Device (Multi-number)

One workspace can connect multiple WA numbers simultaneously. Each device is isolated — messages don't mix between numbers.

Inbox Dashboard

Customer-service style chat panel — view incoming conversations, reply to messages, and manage contacts. Real-time via WebSocket.

Mass Broadcast

Send messages to hundreds/thousands of contacts at once. Broadcasts can be scheduled and delivery status tracked.

REST API

Full API access: send text, image, video, document messages; manage contacts; broadcast; and webhooks for incoming messages.

Webhook / Callback

Every incoming message can be forwarded to your URL via webhook. Integrate with your own systems.

Auto-reply & AI Agent

Create simple keyword-based auto-replies or enable the AI Agent that answers complex questions based on your knowledge base.

Message Templates

Save message templates for quick replies. Save time on frequently asked questions.

Multi-tenant Workspace

Each workspace has its own billing, devices, contacts, and API keys. Great for agencies managing multiple clients.

Plans & Pricing

WhatsApp SaaS is available in several plans with different device, broadcast, and storage quotas.

API & Integration

WhatsApp SaaS provides a complete REST API for automation. Auth uses API Key (Bearer token).

Main Endpoints

• POST /api/wa/v1/messages — Send text, image, video, document messages
• GET /api/wa/v1/messages — Retrieve message history
• POST /api/wa/v1/broadcast — Send mass broadcasts
• GET /api/wa/v1/contacts — Manage contacts
• POST /api/wa/v1/webhook — Configure webhooks for incoming messages

Webhook

Register your webhook URL in the dashboard. Every incoming message is forwarded to your URL as JSON. Perfect for integration with CRM, helpdesk, or your own systems.

Security

• Per-workspace isolation — Chat data, contacts, and device sessions are separated between tenants
• API Key authentication — Each workspace has a unique API key for API access
• Encrypted sessions — sessions are stored encrypted — your number stays safe
• Audit log — All important activities are logged
• HTTPS everywhere — All dashboard and API connections are encrypted

Additional Information

• 14-day free trial — Try all features without a credit card
• Device limit — Depends on plan: starting from 1 device (Starter) to unlimited (Enterprise)
• Chat storage — Chat history is stored in MongoDB, retention depends on plan
• Broadcast rate limit — Limited to prevent spam and WA bans