AI Email Automation with n8n and Google Gemini

An AI workflow that reads every incoming email, sorts it into 6 categories, and takes the right action automatically.

The problem: businesses lose time and leads because customer emails are mixed with promotions, job alerts, and security emails.

What I built:

Gmail Trigger that picks up each new email

AI Text Classifier (Google Gemini) with 6 categories: Security Alert, Promotions, Jobs, Personal, Payments, and Client Inquiries

Automatic Gmail labels for every category

Google Sheets log for jobs, leads, and payments

AI information extraction for client emails (name, phone, service, budget)

AI-written reply drafts for client emails, saved as drafts so a person approves every reply

Instant Discord alerts for security, payment, and client emails

Tools: n8n, Google Gemini, Gmail, Google Sheets, Discord

This project is a working demo built on my own inbox. The same system can be adapted to any business email, such as travel agencies, event venues, stores, recruiters, and consultants.

Impressive workflow! I especially like the human approval step for AI-written replies. Automation with the right oversight makes a real difference. 🙌

3 mistakes I see every GoHighLevel user making that creates 100s of duplicate leads:

No deduplication logic between Facebook Lead Ads → GHL

No AI check for same phone/email with different name

No Google Sheets backup before pushing to GHL

I fixed this last week for a client with a simple n8n + AI workflow:

→ Facebook Lead → AI checks duplicate → If clean → GHL + Sheets → Telegram alert

Result: 0 duplicates in 7 days, 6 hours/week saved.

Want the n8n template? Comment "TEMPLATE" and I'll DM you.

#gohighlevel #n8n #leadmanagement #automation

Clean flow. The part I'd watch is the "maybe" pile: couples often share one email or one phone, so a strict duplicate check can silently drop a real second lead. I'd send those to a review tab in the Sheet instead of skipping them. What does yours do with a likely-but-not-certain match?