Automated Invoice System & WhatsApp Notifications
Project Summary
Integrating n8n and Python to slash manual administrative time by 80%, instantly transforming order data into PDF invoices sent automatically via WhatsApp.
Tech Stack:
The Challenge
Previously, the admin team spent 2-3 hours daily manually copying order data from forms into Microsoft Word invoice templates. This repetitive process was prone to human error—such as typos in pricing or customer names—and resulted in slow response times, creating a bottleneck during peak fabrication production periods.
The Solution
We engineered an event-driven automation system using n8n hosted on a local server. Whenever a new order is logged in Google Sheets, the system triggers a custom Python script to generate a polished PDF invoice in real-time. This PDF is then instantly delivered to the customer’s personal WhatsApp number via API, complete with a personalized greeting. The result is an instant response time (under 1 minute) and 100% data accuracy.
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