n8n Lead Qualification: GPT-4o Scoring to Gmail & Google Sheets

Turn inbound lead enquiries into scored, routed actions—automatically

This n8n workflow captures new lead enquiries via a webhook, uses a GPT-4o agent to enrich and score each lead against your ideal customer profile, then routes the result by sending priority emails via Gmail and maintaining a Google Sheets nurture list.

What this workflow does

• Receives leads: Listens for a POST request on /lead containing the new enquiry payload.
• Adds your ICP + urgency signals: Attaches your ideal customer profile and urgency context to the incoming data.
• Enriches with verifiable facts: Uses an OpenAI GPT-4o orchestrator agent to call a dedicated enrich_lead sub-workflow that extracts only verifiable facts from the enquiry.
• Scores fit and urgency: Calls a score_lead sub-workflow to return a 1–10 fit score, an urgency flag, and reasoning tied to your ideal customer profile.
• Routes the lead automatically:
  • Urgent / high-scoring leads → sends a priority email via Gmail to the owner.
  • Mid-scoring leads → appends to a Google Sheets nurture spreadsheet.
  • Low-fit leads → emails a polite decline via Gmail to the requester.

Use cases

• Qualify leads from your website contact form or landing page using an n8n webhook.
• Reduce manual triage by prioritizing urgent/high-fit leads through Gmail notifications.
• Build an automated nurture pipeline by logging mid-fit leads into Google Sheets.
• Send respectful “not a fit” responses automatically for low-fit enquiries.

Technical details

• Nodes / tools: webhook, set, gmail tool, google sheets tool, n8nn8n-nodes-langchainagent, plus supporting workflow steps (e.g., sticky note).
• OpenAI: GPT-4o orchestrator agent (model selection supported after adding OpenAI credentials).
• Sub-workflows: configure workflow IDs for enrich_lead and score_lead.
• Routing targets: owner email for priority and decline messaging; Google Sheets document ID + sheet name for nurture appends.