n8n Workflow: Qualify Gmail Venue Leads with Gemini, HighLevel & Sheets

Qualify Gmail venue leads automatically with Gemini, sync to GoHighLevel, log in Sheets, and alert Slack—without duplicates

This n8n workflow monitors your Gmail inbox for new unread venue enquiries, uses Google Gemini to extract structured lead details and score them against your ICP, then syncs only qualified leads to GoHighLevel, records them in Google Sheets, and posts a Slack notification once per lead.

What this workflow does

• Triggers every minute when a new unread email arrives in Gmail (based on your configured search query/labels).
• Normalizes email fields and sends the subject/body to Google Gemini (Google PaLM) to extract venue lead details and an ICP score.
• Qualifies leads by continuing only if the email is an ICP-matched lead with an ICP score of at least 70.
• Syncs with GoHighLevel: searches for an existing contact by the sender’s email and creates/updates the contact if none is found.
• Logs to Google Sheets: checks whether the sender already exists in your Sheet; if not, it logs or updates the lead details.
• Prevents duplicate Slack alerts by checking a “notified” flag in Google Sheets before posting.
• Sends a Slack post with the lead details only when the lead hasn’t been notified yet, then updates the Sheet to set notified = true.

Use cases

• Venue operators who receive inquiries by email and need instant lead qualification.
• Automation engineers building an AI-assisted lead pipeline using n8n + Gemini + GoHighLevel.
• SaaS operators who want CRM sync + spreadsheet logging + Slack alerts for inbound leads.

Technical details

• n8n trigger: Gmail inbox monitoring for new unread enquiries (OAuth2).
• AI extraction/scoring: Google Gemini (Google PaLM) API with configurable model name.
• CRM sync: GoHighLevel OAuth2 (search contact by sender email; create/update).
• Data logging: Google Sheets (check existing rows; update lead details and notified flag).
• Notifications: Slack (post lead details once per qualified lead).
• Workflow logic/nodes referenced: if, set, wait, slack, high level, sticky note.