MailGuardian AI : Automated Email Security Workflow

Enterprise-grade low-code security automation powered by Azure Logic Apps & GPT-5

👨‍💻 Author: Nancy Wei

🛠️ Tech Stack

Cloud Automation: Azure Logic Apps AI / LLM: Azure OpenAI (GPT-5 Model) 🚀 Integration: Office 365 Outlook Connector Frontend: HTML5 / CSS3 / Vanilla JS

✨ Key Features

1. Zero-Trust Email Inspection

Automatically intercepts and scans all inbound external emails in the test environment.

2. Next-Gen AI Analysis

Leverages the latest GPT-5 model for deep contextual security logic reasoning.

3. Automated Reporting

Generates security analysis reports in milliseconds and auto-dispatches them to SecOps.

4. Low-Code Agility

Built on a low-code architecture ensuring high enterprise scalability and low maintenance costs.

📌 Lab Objective

Build a fully automated Email Security Analysis workflow. When the test tenant inbox receives an email, the system intercepts it, passes it to AI for deep risk assessment, and sends a report to security personnel.

⚠️ Disclaimer: This lab is for learning and testing purposes only. Privacy and compliance reviews are required before production use.

⚖️ Architecture Decision

Before development, I evaluated four solutions based on cost, scalability, and maintainability to find the perfect balance:

[Option 1] Power Automate + Azure OpenAI

Lowest cost, but lacks enterprise-scale integration flexibility.

[Option 2] Azure Functions + Azure OpenAI

High scalability, but requires heavier coding and maintenance.

🏆 Current Choice

⭐ [Option 3] Azure Logic Apps + Azure OpenAI

Perfect balance of cost, low-code agility, and enterprise integration.

🚀 Future Roadmap

[Option 4] Copilot Studio + RAG + Logic Apps

Ultimate AI agent integration for advanced Security Copilot scenarios.

🔄 Services & High-Level Flow

✉️ Email Arrives
➡️
Logic Apps Triggers
➡️
🧠 GPT-5 Deep Analysis
➡️
📊 Send Security Report

📖 Step-by-Step Implementation Guide

📝 Status: Work in Progress...

🛡️ AI Threat Detection Capabilities

The GPT-5 model is configured to detect 7 major cyber threats:

🎣 Phishing 🦠 Malware Indicators 🔑 Credential Harvesting 💼 Business Email Compromise 🔗 Suspicious URLs 🎭 Impersonation 🧠 Social Engineering