WhatsApp Communication Flows
Zero-cost messaging using WhatsApp deep links
Zero-Cost WhatsApp Strategy
Instead of expensive WhatsApp Business API (₹0.80 per message), we use WhatsApp deep links that open on the user's phone with pre-filled messages. Cost: ₹0 per message!
₹0 Cost No API Charges User's WhatsApp
Flow 1: Job Assignment
Admin assigns jobs to technicians via WhatsApp deep links. No server processing, no API costs.
Flow 2: Invoice Sharing
Send professional invoices to customers via WhatsApp deep links. Client-side PDF generation for zero cost.
Cost Comparison: WhatsApp API vs Deep Links
❌WhatsApp Business API
- •₹0.80 per message (or more for conversations)
- •₹8,000 for 10,000 messages
- •Monthly platform fees
- •Complex setup and maintenance
✓WhatsApp Deep Links
- •₹0 cost per message
- •₹0 for 10,000+ messages
- •No platform fees
- •Simple implementation
Potential savings: Over ₹8,000 per 10,000 messages
Technical Implementation
Job Assignment Flow:
const text = `New Job: ${jobType}\nName: ${customerName}\nAddr: ${address}\nMap: ${googleMapsLink}`;
const url = `https://wa.me/${technicianPhone}?text=${encodeURIComponent(text)}`;
window.open(url);Invoice Sharing Flow:
const msg = `Namaste ${customerName}, here is your repair bill: ${pdfLink}. Please pay ₹${amount}.`;
const url = `https://wa.me/${customerPhone}?text=${encodeURIComponent(msg)}`;
window.open(url);Benefits:
- Uses the user's own WhatsApp account, not your API
- No monthly API costs or per-message charges
- Works offline until the user opens WhatsApp
- Simple JavaScript implementation (no backend API needed)
- Follows WhatsApp's terms of service for user-initiated messages