n8n – Outlook AI Categorization & Labeling (Fully Automated)

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Zero manual mapping. The workflow automatically discovers your Outlook folders, understands the context, assigns the correct category, and moves the email into the right folder. It uses the original Microsoft Outlook nodes plus an AI Agent. You can connect OpenAI or any other LLM provider.

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✨ Features​

• Self-Discovery: Scans your Outlook folders automatically – no manual mapping required.
• AI-Powered Decisions: Considers sender, subject, content, links, attachments, timing, and business context.
• Label + Move: Assigns the right Outlook category and moves the email into the correct folder.
• Dual Category Logic: Can apply both a primary and a secondary category (e.g., Action + Project).
• Error Handling: Captures errors and continues without breaking the workflow.
• Flexible AI Backend: Replace OpenAI with your own LLM if preferred.

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🚀 Setup (5 Steps)​

1. Connect Outlook
   In n8n → Credentials → Microsoft Outlook, grant at least Mail.ReadWrite.
2. Connect AI
   In n8n → Credentials, set up OpenAI (or another model). Works best with GPT-4.x or GPT-4o.
3. Import the Workflow
   n8n → Workflows → Import from File/Clipboard and paste the provided JSON.
4. Enable Trigger
   Adjust the Schedule Trigger (e.g., every 5 minutes).
5. Run & Verify
   Test run and watch emails get categorized and moved automatically.

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🧠 How It Works​

1. Schedule Trigger pulls new emails
2. Loop Over Items processes them one by one
3. Markdown / varEmail cleans the content
4. Get Many Folders fetches Outlook categories and folders
5. Summarize + Code prepare category IDs
6. AI Agent applies deep categorization logic
7. Update Category applies the Outlook category
8. Move Folder places the email in the right folder
9. Error Handling ensures workflow stability

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🧩 System Prompt Example​

You are an advanced AI email categorization system. Your mission is to intelligently analyze and categorize emails with maximum accuracy and context awareness.

INTELLIGENT CATEGORIZATION ENGINE:

- Parse all available categories: {{ $json.category }}
- Multi-layer analysis: Sender, Subject, Body, Links, Attachments
- Prioritize: Security threats, Action Required, Business Context
- Specialized: SaaS, Hosting, E-commerce, Finance, Support, Corporate
- Anti-Spam: Pattern detection, spoofing, red-flag subjects
- Dual Logic: Primary + Secondary categories when applicable

OUTPUT FORMAT (JSON only):
{
"subject": "EXACT_EMAIL_SUBJECT",
"category": "PRIMARY_CATEGORY_FROM_AVAILABLE_LIST",
"subCategory": "SECONDARY_CATEGORY_IF_APPLICABLE",
"analysis": "Reasoning",
"confidence": "HIGH/MEDIUM/LOW"
}

Available Categories: {{ $json.category }}

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⚙️ Parameters & Notes​

• Uses only existing Outlook categories (never invents new ones).
• Works with any LLM that supports Chat Completions.
• Requires Mail.ReadWrite permissions.
• Safe fallback: if unsure, it uses the Action category.

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🛡️ Security​

• Processes only what is needed for classification.
• No external logging of email content unless you configure it.
• AI provider can be swapped for self-hosted LLMs for compliance.

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📄 License & Sharing​

• License: MIT (or your choice).
• Tags: n8n, Outlook, Email, AI, Automation, Categorization
• Import Method: Copy/paste workflow JSON into n8n.

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✅ Summary​

Connect → Import → Run.
No manual mapping. AI-powered categorization that labels and organizes your Outlook mailbox automatically.

 

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Download template :

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