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

Automatically Enrich, Score, and Route Leads—With GPT-4o + Gmail + Google Sheets

Turn every new lead enquiry into an action instantly. This n8n Lead Scoring & Routing workflow accepts inbound leads via webhook, uses a GPT-4o orchestrator to enrich and score them against your ICP, then routes outcomes to Gmail for same-day follow-up or Google Sheets for nurture tracking.

What this workflow does

• Receives lead enquiries through a POST webhook request on /lead.
• Applies your ICP rules and urgent signals by adding them to the incoming enquiry data.
• Uses an OpenAI (GPT-4o) orchestrator agent to call:
  • a lead enrichment sub-workflow (enrich_lead)
  • a lead scoring sub-workflow (score_lead)
• Routes high-scoring or urgent leads by sending a Gmail notification to the owner for same-day follow-up.
• Appends mid-scoring leads to a Google Sheets nurture list (enquiry details + score).
• Declines low-scoring / out-of-scope leads with a polite Gmail email and returns a one-sentence score-and-reason summary.

Use cases

• SaaS teams needing fast lead response without manual triage.
• Automation engineers building a lead scoring pipeline that combines AI enrichment with deterministic routing.
• Operators tracking mid-tier leads in Google Sheets nurture lists while top leads trigger Gmail follow-ups.

Technical details

• n8n nodes/tools: webhook, set, gmail tool, google sheets tool, sticky note.
• AI agent: n8n-nodes-langchainagent using an OpenAI GPT-4o chat model as an orchestrator agent.
• Setup includes adding OpenAI API credentials, selecting the workflow IDs for enrich_lead and score_lead, configuring Gmail destination for priority notifications, and setting your Google Sheets document ID + sheet name for the append action.