High-visibility PDF delivery and automated payment collection for Billing SaaS, Accounting Apps, and ERP solutions.
Ensure 0% no-shows on collections and 100% reach for digital receipts.
Directly attach GST invoices and receipts in the WhatsApp message. Official handles ensure PDFs are never marked as spam.
Trigger automated reminders 3 days, 1 day, and 1 hour before the due date. Increase collection rates by up to 60%.
Send a digital receipt as soon as a payment is reconciled in your system. Build trust with immediate confirmation.
// Standard POST request to deliver a template with dynamic PDF
curl -X POST https://api.hkreach.in/api/external/send/template \
-H "X-Api-Key: your_key" \
-d '{
"to": "917096136319",
"templateName": "invoice_alert",
"media": {
"type": "document",
"url": "https://your-server.com/invoices/INV-123.pdf",
"filename": "Invoice_April_24.pdf"
},
"bodyParams": ["M/s Harikrishna Entreprise", "₹6,499"]
}'Manual follow-ups are a thing of the past. Let our API handle the busy work of accounts receivable.
Process thousands of salary/payout notifications in a single batch via our async broadcasting API.
Add "Pay Now" or "Download App" buttons directly to your billing messages for higher conversion.
Stay transparent with full delivery tracking for every single rupee billed.
For retail, wholesale, and service businesses, timely payment collection is the lifeblood of operations. Traditional printed invoices or email attachments cause friction and delays. By integrating the Official WhatsApp Business API through HK Reach, developers of POS and billing software can drastically reduce their clients' Days Sales Outstanding (DSO).
As soon as a bill is generated in your software, trigger an automated WhatsApp message containing a PDF copy of the invoice. Crucially, you can embed UPI or payment gateway links directly in the message. This convenience encourages immediate payment, significantly improving cash flow for your end-users.
Configure your software's ledger module to track pending accounts and automatically send gentle, templated WhatsApp reminders before and after the due date. Utilizing HK Reach's robust API ensures these alerts are delivered reliably via the Official Meta Cloud infrastructure, avoiding the spam filters that plague traditional SMS.
Give your billing software a massive competitive edge. Integrate with Harikrishna Enterprise today to offer seamless WhatsApp invoicing and automated payment collection.