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

Turn lead enquiries into scored, routed follow-ups—automatically

This n8n GPT-4o Lead Scoring Webhook to Gmail & Google Sheets workflow receives incoming enquiries via a webhook, uses an OpenAI GPT-4o agent to enrich and score each lead against your ideal-customer rules, then routes the result to Gmail (priority or decline) or a Google Sheets nurture list.

What this workflow does

• Accepts inbound leads: Listens for a POST request at /lead containing the new enquiry.
• Applies your criteria: Attaches your ideal customer profile and urgent-signal rules to the lead data.
• Enriches with GPT-4o: Uses an OpenAI GPT-4o orchestrator agent to call an enrichment sub-workflow and extract structured, knowable facts from the enquiry.
• Scores fit + urgency: Calls a scoring sub-workflow to assign a 1–10 fit score, an urgency flag, and brief reasoning based on enrichment and your rules.
• Routes outcomes via Gmail or Sheets:
  • High-scoring or urgent: Sends a priority alert email to the owner via Gmail.
  • Mid-scoring: Appends the lead to a Google Sheets nurture list with enquiry, score, and status.
  • Low-scoring or decline: Sends a polite decline email to the enquirer via Gmail.

Use cases

• Score website or form leads instantly and notify sales only when they’re a strong match.
• Auto-build a Google Sheets nurture pipeline for medium-fit prospects.
• Send immediate, polite declines to low-fit enquiries to keep your inbox responsive.

Technical details

• n8n nodes/tools: webhook, set, gmail tool, google sheets tool, and n8n-nodes-langchainagent (OpenAI GPT-4o orchestrator agent).
• Sub-workflows: Configure enrich_lead and score_lead by setting their workflowId values.
• Credentials: Add OpenAI credentials for GPT-4o, Gmail credentials (including owner address), and Google Sheets credentials.

Set it up once, then let your n8n automation score, enrich, and route every incoming lead enquiry with GPT-4o, Gmail, and Google Sheets.