Update. AI Fraud & Spam Detector with n8n

I Built an AI Fraud & Spam Detector with n8n — Bank Loans, Credit Cards, Mutual Funds, and Phishing, All in One Workflow

How I combined Gmail, Gemini 2.5 Flash, and n8n to auto-catch loan scams, credit card fraud, fake mutual fund/SIP schemes, and phishing before they waste your time — in real time

If you run a business inbox in India, you already know the pattern: “pre-approved loan, no CIBIL check,” “your credit card will be blocked, share CVV to verify,” “guaranteed 30% returns — SEBI registered,” and fifty marketing blasts a day burying the one email that actually matters.

I got tired of manually triaging this, so I built a single automated classifier using n8n + Gemini that reads every incoming email, figures out which kind of scam it is, scores it for fraud risk, and routes it — quarantine, review, or let it through — without me touching it.

Here’s the full build, step by step.

The Real Problem: Fraud Doesn’t Wait, So Detection Can’t Either

This isn’t a hypothetical annoyance — it’s a live, growing crisis:

• India’s financial fraud losses have been climbing into the thousands of crores annually, with loan-scam and phishing emails as a major entry point into the funnel — the email is rarely the endgame, it’s the first click that leads to OTP theft, fake KYC forms, or advance-fee payments.
• Speed is the whole game. A…