n8n Lead Qualification Workflow: Gemini, HubSpot, Gmail & Slack

Automatically qualify leads with Google Gemini, log them to Google Sheets, and route next steps in HubSpot—with Slack & Gmail notifications

This n8n Lead Qualification Workflow captures website and Google Ads leads via webhook, evaluates them using Google Gemini against your Business Profile rules in Google Sheets, then updates HubSpot with contacts and call tasks—while alerting your team in Slack and communicating with leads through Gmail.

What this workflow does

• Receives new leads from a website form or Google Ads lead form via webhooks, validates a shared secret key, normalizes fields, and appends each lead to a Google Sheets Lead Log.
• Qualifies leads with Google Gemini by loading services, service areas, and qualification rules from a Google Sheets Business Profile sheet; Gemini classifies the lead and can draft a needed email.
• Updates the Lead Log with the AI outcome, priority, summary, and any missing information details.
• Creates HubSpot actions for qualified and not-a-fit leads: upserts the contact, creates an associated call task with a calculated due time, and emails the lead a confirmation.
• Notifies your team in real time for qualified leads via Slack and sends alerts to the owner using Gmail.
• Handles missing information by emailing questions once and storing the Gmail thread ID so the lead’s reply can be matched and re-evaluated.
• Runs on a schedule: hourly checks HubSpot task completion, sends Slack/Gmail reminders for open qualified tasks, escalates no-reply missing-info leads to “please call,” and daily at 6 PM emails a summary report from the Lead Log.

Use cases

• Qualifying inbound Google Ads and website form leads automatically with Gemini-based rules.
• Keeping HubSpot call tasks accurate with due times and reminder escalations.
• Reducing manual follow-up by capturing missing-info replies through Gmail thread matching.

Technical details

• Integrations/Nodes: Webhook, Google Sheets, Google Gemini, HubSpot, Gmail, Slack
• Workflow logic: if, set, code, switch
• Operational behavior: hourly reminder/escalation loop; daily 6 PM Lead Log summary email