n8n Lead Scoring: Google Gemini + HubSpot + Gmail Alerts

Instant “Hot Lead” alerts from your inbound forms—scored by Google Gemini and synced to HubSpot

This n8n workflow takes every new inbound form submission, cleans and enriches the lead, uses Google Gemini to score fit against your ICP, upserts the contact in HubSpot, and emails your sales owner via Gmail only when the lead is “hot” based on a defined threshold.

What this workflow does

• Receives new lead submissions from an n8n Form trigger.
• Normalizes lead data by validating and lowercasing the email, extracting the company domain, detecting free email providers, and backfilling missing company/website details.
• Enriches with AI scoring: sends the cleaned lead data plus your ICP description to Google Gemini and requests a JSON verdict containing a fit score, segment, reasoning, and a suggested email opener.
• Defensively parses results: calculates whether the lead is “hot” using the score threshold, disqualification flag, and email validity. If the model response is unreadable, it safely falls back to a default behavior.
• Syncs to HubSpot: when the email is valid, creates or updates the contact matched by email, and writes lead message, score, segment, and lifecycle stage to HubSpot properties.
• Sends Gmail alerts only for hot leads: generates an HTML alert and sends it to the configured sales owner via Gmail—otherwise it finishes without sending.

Use cases

• SaaS teams that want lead scoring automation right after inbound submissions.
• Marketing-to-sales handoff workflows: route only high-fit leads to reps.
• Operators who need HubSpot contact enrichment with AI-derived scoring details.

Technical details

• Integrations / nodes: if, set, code, no op, Gmail, HubSpot.
• AI: Google Gemini (Chat Model) returns JSON used for fit score and segment.
• HubSpot auth: Private App token with crm.objects.contacts.read and crm.objects.contacts.write.
• Gmail: sends an HTML “hot lead” email to the sales owner.