Auto-categorize Outlook emails into color categories with GPT-4o
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 9 nodes and runs manually, when you click “Execute workflow”. Along the way it connects Microsoft Outlook and OpenAI Chat Model.
How it runs
Trigger: Manually, when you click “Execute workflow”.
- Get Messages from Outlook (Microsoft Outlook): get many
- Set Fields from Email (Edit Fields (Set)): sets 4 fields: subject, bodyPreview, from…
- Loop Over Items (Loop Over Items (Split in Batches)): loops over the items in batches
- Set Category and ID (Edit Fields (Set)): sets 2 fields: output.category, id
- Categorizing Agent (AI Agent): runs an AI agent, with model: OpenAI Chat Model; output parser: Structured Output Parser
- Update Category (Microsoft Outlook): update
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (7)
- Loop Over Items (Split in Batches)
n8n-nodes-base.splitInBatches - Manual Trigger
n8n-nodes-base.manualTrigger - Microsoft Outlook
n8n-nodes-base.microsoftOutlook - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured - Edit Fields (Set)
n8n-nodes-base.set - AI Agent
@n8n/n8n-nodes-langchain.agent
From the author
This workflow fetches recent emails from Outlook and uses OpenAI to assign a category (e.g., Red, Yellow, Green). It then updates each message’s category in Outlook. --- ⚙️ Setup Instructions 1️⃣ Set Up Outlook Connection 1. In n8n → Credentials → New →…