n8n Lead Scoring Workflow: GPT-4o + Gmail + Google Sheets

Automatically score every inbound lead with GPT-4o, then route it to Gmail or Google Sheets

This n8n Lead Scoring Workflow receives new lead enquiries via a webhook, enriches and evaluates them using an OpenAI GPT-4o agent, and then sends priority follow-up, polite declines, or nurture tracking to the right place—Gmail or Google Sheets.

What this workflow does

• Receives inbound leads: Accepts a POST request on the /lead webhook containing enquiry details.
• Applies your ICP and urgency signals: Attaches your ideal customer profile rules and urgency signals to the incoming lead data.
• Enriches + scores with GPT-4o: Uses an OpenAI GPT-4o orchestrator agent to call two sub-workflows—enrich_lead and score_lead—producing a fit score (1–10) and an urgency flag.
• Routes outcomes to Gmail:
  • High-scoring or urgent leads are emailed to the business owner via Gmail with a concise summary and contact details.
  • Low-scoring or out-of-scope leads receive a polite decline email via Gmail.
• Nurture tracking in Google Sheets: Mid-scoring leads are appended to a Google Sheets nurture list (including enquiry, score, and status).

Use cases

• SaaS teams that want instant lead qualification from website form submissions into prioritized email follow-ups.
• Automation engineers building an n8n lead scoring pipeline with GPT-4o + routing logic.
• Operators who need a lightweight nurture process using Google Sheets while keeping inbox notifications for only the best prospects.

Technical details

• Nodes/stack: webhook, set, gmail tool, n8nn8n-nodes-langchainagent (GPT-4o agent), and google sheets tool (plus a sticky note).
• Setup requirements:
  • Add OpenAI credentials and confirm model gpt-4o and temperature in the orchestrator’s OpenAI Chat Model.
  • Select the enrich_lead and score_lead sub-workflows and provide their workflow IDs.
  • Connect Gmail and set the recipient inbox (replace owner@example.com).
  • Connect Google Sheets and set the spreadsheet document ID and sheet name (ensure columns like Date, Name, Email, Enquiry, Score, Status).