Enterprise-Grade WHMCS WhatsApp Features

Everything your web hosting business needs to deliver reliable, instant WhatsApp notifications to your clients.

Multi-Tenant Architecture

Every hosting company operates in a dedicated, isolated tenant partition. API keys, WhatsApp sessions, logs, and templates are strictly quarantined.

Queue & Exponential Retries

Built-in background queue engine with worker processes, exponential backoff (1m, 3m, 9m), and dead-letter handling. Never drop a billing reminder.

HMAC-SHA256 Signed API

Zero plaintext secret exposure. Every WHMCS API request includes timestamp drift verification, nonces to eliminate replay attacks, and cryptographic signing.

Smart Phone Normalization

Automatic parsing of Pakistani mobile numbers (e.g. 0300-1234567 → 923001234567) alongside standard E.164 international numbering.

Dynamic Template Engine

Rich placeholder replacement for {client_first_name}, {invoice_amount}, {service_domain}, and direct one-click invoice payment URLs.

Replaceable Connector Adapters

Decoupled provider layer supporting Evolution API, WhatsApp Business Cloud API, and local bridges without persistent socket locks on PHP web processes.