Triage and label Gmail inbox emails with OpenRouter Gemini 3.5

by Andrew · 4 views · created 2026-07-29 · Ticket Management, AI Summarization

What this workflow does

This workflow has 9 nodes and runs on Gmail events. Along the way it connects Gmail. It also calls openrouter.ai over HTTP.

How it runs

Trigger: On Gmail events.

1. Normalize Email Data (Code): runs custom JavaScript code
2. Build Classification Request (Code): runs custom JavaScript code
3. Classify with OpenRouter (HTTP Request): calls openrouter.ai (POST)
4. Verify Classification Output (Code): runs custom JavaScript code
5. Fetch Gmail Labels (Gmail): get many (label)
6. Determine Category Label (Code): runs custom JavaScript code
7. Label Email by Category (Gmail): add labels (message)
8. Mark as read (Gmail): remove labels (message)

Services it uses

Gmail

HTTP calls to: openrouter.ai

Before you upgrade to n8n 3.0

Nodes used (4)

• Gmail Triggern8n-nodes-base.gmailTrigger
• Coden8n-nodes-base.code
• HTTP Requestn8n-nodes-base.httpRequest
• Gmailn8n-nodes-base.gmail

From the author

Quick overview This workflow polls your Gmail inbox for unread emails, sends the sender/subject/body to OpenRouter (Gemini) for structured triage, then applies a matching Gmail label and marks the message as read. How it works 1. Polls Gmail every minute for…

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