For RetailTech Developers

WhatsApp API for Retail POS Software

Replace paper receipts with digital WhatsApp invoices and drive repeat sales.

print_wa_bill.sh

curl -X POST https://api.hkreach.in/api/external/send/template \
  -H "X-App-Name: enterprise-app" \
  -H "X-Api-Key: hk_live_..." \
  -d '{
     "to": "919876543210",
     "templateName": "digital_receipt",
     "bodyParams": ["₹2,490", "150 Pts Earned", "https://bill.pdf"]
     }'

Technical Capabilities

Power your software with official WhatsApp communication features in minutes.

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WhatsApp Billing

Auto-send digital invoices as soon as the bill is printed on your POS system.

💎

Loyalty Updates

Notify customers about their updated loyalty points after every purchase.

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In-Store Offers

Blast personalized discount codes to regular customers during sale seasons.

Effortless Backend Sync

Integrate our REST API into your existing .NET, Java, or Node.js backend seamlessly.

Payload-Driven Messaging

No UI work needed in your app. Pass dynamic parameters via JSON and our API handles the rest.

Official WABA Branding

Build trust with your users by sending messages from an official, verified business profile.

Real-time Callbacks

Use webhooks to sync delivery and read status back into your database for a complete audit trail.

API Response

{
  "status": "success",
  "messageId": "wamid.HBgLM...",
  "timestamp": 1712318462,
  "meta": {
    "category": "utility",
    "billable": true
  }
}

Built for High Performance

Our infrastructure is optimized for high-throughput vertical applications requiring mission-critical uptime.

99.9% Uptime

Built on Meta's official Cloud API for maximum reliability and zero ban risk.

Scalable Webhooks

Receive tens of thousands of status updates per second with our low-latency webhook engine.

Developer Support

Direct priority support from our engineering team for complex custom integrations.

Deep Dive

Drive Retail Growth with WhatsApp API for POS Systems

Point of Sale (POS) systems handle the final transaction, but the customer journey shouldn't end there. By integrating the Official WhatsApp Business API via HK Reach, POS software developers can offer powerful marketing and retention tools to their retail clients.

Digital Receipts & Loyalty Programs

Eliminate paper waste by sending digital GST receipts directly to the customer's WhatsApp at checkout. Instantly update them on their loyalty point balance and send personalized discount codes for their next visit to drive repeat footfall.

Targeted Promotional Broadcasts

Allow retailers to use the customer data collected at the POS to send targeted WhatsApp broadcasts for seasonal sales, new arrivals, and store events, completely bypassing spam filters associated with traditional SMS.

Give your POS software a competitive edge. Partner with Harikrishna Enterprise for seamless WhatsApp API integration.