Quick overview This workflow receives shipment requests via webhook, pulls carrier rate data from Google Sheets, uses OpenAI GPT-4o to generate a ranked HTML freight quote, converts it to a PDF with PDFShift, and emails the PDF to the customer via Gmail, with Slack alerts on workflow errors. How it works Receives a POST webhook request containing shipment details like origin, destination, weight, mode, and customer contact information. Reads rate information in parallel from three carrier tabs in a Google Sheets spreadsheet (BlueDart, DTDC, and Delhivery). Combines the carrier results and calculates per-carrier total cost based on the shipment weight. Sends the shipment and carrier data to OpenAI GPT-4o to generate a complete HTML quote page with a ranked comparison table. Converts the generated HTML into an A4 PDF file using the PDFShift API. Emails the PDF quote to the customer using Gmail with a prefilled subject and message. If the workflow fails, posts an error alert message to a Slack channel. Setup Configure the webhook path in n8n and copy the production webhook URL into the system that submits shipment requests.
Tags
Gmail
Google SheetsWHTTP RequestOpenAISlackRelated workflows
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