Generate Invoices, Save to Drive and Send Email to Customer

Overview
This workflow creates a full invoicing pipeline: from raw order data to a professional invoice PDF that is stored and sent automatically. It reduces manual effort and ensures every invoice is consistent and properly archived.

How it works

• Receives invoice data through a webhook (date, customer, items).
• Generates a unique invoice number and records invoice details in Google Sheets.
• Produces a styled HTML invoice with GPT-5 and converts it into a PDF.
• Stores the PDF in Google Drive and emails it to the customer via Gmail.

When to use it
Perfect for small businesses, freelancers, or teams that need automated invoice generation. It ensures invoices are consistent, securely stored, and promptly delivered to clients without manual intervention.