We're building the WhatsApp infrastructure
South Africa deserves
ChatReach is a product of Sigma Mode (Pty) Ltd, a South African technology company focused on making enterprise-grade WhatsApp Business API solutions accessible to businesses of all sizes.
🇿🇦 South African First
ZAR billing via PayFast. Local support hours (Mon–Fri, 8am–5pm SAST). Infrastructure and data handling compliant with POPIA (Protection of Personal Information Act). Built for African networks and business needs.
🔒 Enterprise Security
HMAC-SHA256 webhook signature verification. PBKDF2 password hashing with 100k iterations. Encrypted API credentials stored in SQL — not config files. Per-tenant data isolation. Full audit trail on every action.
⚡ Developer Focused
Full REST API gateway with X-Api-Key authentication, per-key rate limiting, IP allowlisting, and Swagger documentation. Integrate WhatsApp into any system — CRM, ERP, e-commerce, helpdesk — in minutes.
About Sigma Mode (Pty) Ltd
Sigma Mode (Pty) Ltd is a registered South African company building technology products that help businesses communicate better. ChatReach is our flagship product — a multi-tenant WhatsApp Business Cloud API platform that enables businesses to send messages at scale, manage team inboxes, automate with WhatsApp Flows, and integrate via API.
We believe every South African business — from a one-person shop in Soweto to an enterprise in Sandton — deserves access to professional WhatsApp Business tools without the complexity and cost of building their own infrastructure.