GPT-4o Lead Scoring Webhook: Route to Gmail & Google Sheets

Route every new lead to the right next step—automatically—with a GPT-4o Lead Scoring Webhook

This n8n workflow receives inbound lead enquiries via a POST webhook, uses a GPT-4o agent to enrich and score each lead against your ideal-customer rules, then routes results to Gmail for urgent follow-up or logs mid-fit leads to Google Sheets.

What this workflow does

• Accepts leads: Listens for a webhook request on /lead containing a new enquiry.
• Adds your rules context: Attaches your ideal customer profile and urgency signals to the enquiry data.
• Enriches & scores with GPT-4o: Uses the n8nn8n-nodes-langchainagent (GPT-4o orchestrator agent) to call two sub-workflows—enrich_lead and score_lead—producing:
  • Fit score (1–10)
  • Urgency flag
• Routes urgent leads: Emails the business owner in Gmail when the lead is urgent or has a score 7+ for same-day handling.
• Nurtures mid-fit leads: Appends leads with score 4–6 to a Google Sheets nurture list with enquiry details and score.
• Declines low-fit leads: Sends a polite decline email via Gmail for score 3 or below (or when matching your DECLINE rules).

Use cases

• Capture inbound enquiries from your site form or landing page and trigger immediate lead triage.
• Prioritize sales follow-up by notifying via Gmail only when leads are urgent or highly aligned (7+).
• Maintain a structured nurture pipeline in Google Sheets for mid-fit leads (4–6).
• Automatically decline unsuitable leads using your DECLINE rules to keep the pipeline clean.

Technical details

• n8n nodes/tools: Webhook, Set, Gmail tool, Google Sheets tool, n8nn8n-nodes-langchainagent, and a Sticky Note.
• Required setup: add OpenAI credentials for GPT-4o; configure enrich_lead and score_lead sub-workflow workflowId values; connect Gmail (update owner@example.com); connect Google Sheets (set spreadsheet document ID and sheet name).
• Customize: update your IDEAL/GOOD/POOR/DECLINE text and URGENCY-related rules in the workflow.