Alex Dunlop This workflow corresponds to n8n.io template #4876 — we link there as the canonical source.
This workflow follows the Chainllm → Gmail recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"meta": {
"templateCredsSetupCompleted": true
},
"nodes": [
{
"id": "37166e51-ffb6-43fe-8bd5-fe5eb1249366",
"name": "OpenRouter Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenRouter",
"position": [
540,
540
],
"parameters": {
"model": "google/gemini-2.5-flash-preview-05-20",
"options": {}
},
"credentials": {
"openRouterApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "067f6b55-dc4c-4757-b19e-2d539b8b2526",
"name": "Aggregate Gmail Messages",
"type": "n8n-nodes-base.aggregate",
"position": [
-360,
220
],
"parameters": {
"options": {},
"aggregate": "aggregateAllItemData"
},
"typeVersion": 1
},
{
"id": "7807ff72-49f7-4a7b-9d75-24746d0dfdb7",
"name": "Merge Labels & Messages",
"type": "n8n-nodes-base.merge",
"position": [
240,
320
],
"parameters": {
"mode": "combine",
"options": {},
"combineBy": "combineAll"
},
"typeVersion": 3.1
},
{
"id": "8c51f04b-3415-4d53-8624-ce8d484145b9",
"name": "Classify Email with AI",
"type": "@n8n/n8n-nodes-langchain.chainLlm",
"position": [
520,
320
],
"parameters": {
"text": "=You are an email classification assistant. Your task is to analyze Gmail email snippets and categorize them into one of the following labels:\n\n1. To respond - Emails requiring a direct personal response from you (questions from individuals, personal conversations, NOT automated feedback requests)\n2. FYI - Emails requesting you to take action, reminders, or alerts about issues (add money requests, payment failures, action needed)\n3. Comment - Emails specifically asking for your feedback, review, or opinion in a professional/collaborative context\n4. Notification - Automated updates about completed or ongoing events (successful payments, transfers sent, deployments, shipments, security alerts)\n5. Meeting update - Calendar invites, meeting changes, or meeting-related communications\n6. Awaiting reply - Follow-up emails or reminders about your pending responses\n7. Actioned - Confirmations of actions YOU specifically took (not automated system actions)\n8. Marketing - Promotional content, sales emails, feature announcements, newsletters, or automated customer feedback surveys\n\nKey classification rules:\n- Automated status updates (deployments, transfers, payments processed) \u2192 Notification\n- Requests to add money or take action \u2192 FYI\n- Payment failure alerts \u2192 FYI\n- Security alert digests \u2192 Notification\n- Shipment updates \u2192 Notification\n- Direct Debit payment confirmations \u2192 Notification\n- Balance update confirmations \u2192 Notification\n- Customer satisfaction surveys or feedback requests \u2192 Marketing\n- Automated \"how was your experience\" emails \u2192 Marketing\n- Only use \"Actioned\" for confirmations of YOUR manual actions\n- Only use \"Marketing\" for promotional content, including feedback surveys\n\nInstructions:\n1. Read the email snippet carefully\n2. Note the sender (if provided) for context\n3. Choose the single most appropriate label based on the rules above\n4. IMPORTANT: Respond ONLY with the number and label (e.g., \"2. FYI\")\n5. Do not include any other text, explanation, or repeat the email content\n\nEmail From:\n{{ $json.From }}\nEmail To:\n{{ $json.To }}\nEmail subject:\n{{ $json.Subject }}\nEmail snippet:\n{{ $json.snippet }}\n\nYour response must be exactly one of these 8 options:\n1. To respond\n2. FYI\n3. Comment\n4. Notification\n5. Meeting update\n6. Awaiting reply\n7. Actioned\n8. Marketing",
"batching": {},
"promptType": "define"
},
"typeVersion": 1.7
},
{
"id": "ddbdc31a-ea27-415e-b9e2-954959cfcb7a",
"name": "New Gmail Email Received",
"type": "n8n-nodes-base.gmailTrigger",
"position": [
-560,
340
],
"parameters": {
"filters": {},
"pollTimes": {
"item": [
{
"hour": 12
}
]
}
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "52b3a1d8-3be8-4f57-8759-7ae9abcdb5cb",
"name": "Fetch Available Gmail Labels",
"type": "n8n-nodes-base.gmail",
"position": [
-140,
220
],
"parameters": {
"resource": "label",
"returnAll": true
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
},
{
"id": "2d15670f-5735-4110-a1eb-d5b6b8abef89",
"name": "Map Label Names to IDs",
"type": "n8n-nodes-base.code",
"position": [
60,
220
],
"parameters": {
"jsCode": "const items = $input.all();\nconst combinedObject = items.reduce((acc, item) => {\n return { ...acc, [item.json.name]: item.json.id };\n}, {});\n\nreturn { combinedObject };\n"
},
"typeVersion": 2
},
{
"id": "4c5d1e4a-93ce-4f78-b0ce-8b94aff99498",
"name": "Apply Classification Label",
"type": "n8n-nodes-base.gmail",
"position": [
960,
320
],
"parameters": {
"labelIds": "={{ $('Map Label Names to IDs').item.json.combinedObject[$json.text] }}",
"messageId": "={{ $('Merge Labels & Messages').item.json.id }}",
"operation": "addLabels"
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
}
],
"connections": {
"OpenRouter Chat Model": {
"ai_languageModel": [
[
{
"node": "Classify Email with AI",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Classify Email with AI": {
"main": [
[
{
"node": "Apply Classification Label",
"type": "main",
"index": 0
}
]
]
},
"Map Label Names to IDs": {
"main": [
[
{
"node": "Merge Labels & Messages",
"type": "main",
"index": 0
}
]
]
},
"Merge Labels & Messages": {
"main": [
[
{
"node": "Classify Email with AI",
"type": "main",
"index": 0
}
]
]
},
"Aggregate Gmail Messages": {
"main": [
[
{
"node": "Fetch Available Gmail Labels",
"type": "main",
"index": 0
}
]
]
},
"New Gmail Email Received": {
"main": [
[
{
"node": "Aggregate Gmail Messages",
"type": "main",
"index": 0
},
{
"node": "Merge Labels & Messages",
"type": "main",
"index": 1
}
]
]
},
"Fetch Available Gmail Labels": {
"main": [
[
{
"node": "Map Label Names to IDs",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
gmailOAuth2openRouterApi
Pro
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About this workflow
Professionals and individuals who receive high volumes of emails, those who want to automatically organize their Gmail inbox using AI classification.
Source: https://n8n.io/workflows/4876/ — original creator credit. Request a take-down →
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