About this recipe
A recipe for Auto Label Incoming Gmail Messages With Ai Nodes
Recipe Template
{
"nodes": [
{
"id": "8141ffad-df2a-403b-a869-799c036f9733",
"name": "Gmail trigger",
"type": "n8n-nodes-base.gmailTrigger",
"position": [
-600,
580
],
"parameters": {
"simple": false,
"filters": [],
"options": [],
"pollTimes": {
"item": [
{
"mode": "everyMinute"
}
]
}
},
"credentials": {
"gmailOAuth2": {
"id": "uBcIMfsTtKjexw7I",
"name": "Gmail (workfloowstutorial@gmail.com)"
}
},
"typeVersion": 1
},
{
"id": "6d9aa398-e2de-4fd0-b939-2a12d0c9fe14",
"name": "Get message content",
"type": "n8n-nodes-base.gmail",
"position": [
-340,
580
],
"parameters": {
"simple": false,
"options": [],
"messageId": "={{ $json.id }}",
"operation": "get"
},
"credentials": {
"gmailOAuth2": {
"id": "uBcIMfsTtKjexw7I",
"name": "Gmail (workfloowstutorial@gmail.com)"
}
},
"typeVersion": 2.1
},
{
"id": "cd86bc09-8c7f-4c85-9cb3-6dbd42420672",
"name": "Set label values",
"type": "n8n-nodes-base.set",
"position": [
300,
580
],
"parameters": {
"fields": {
"values": [
{
"name": "labels",
"type": "arrayValue",
"arrayValue": "={{ $json.labels }}"
}
]
},
"options": []
},
"typeVersion": 3.2
},
{
"id": "329435a6-51d1-416e-9aa9-5fe9a8dce74f",
"name": "Get all labels",
"type": "n8n-nodes-base.gmail",
"position": [
580,
460
],
"parameters": {
"resource": "label",
"returnAll": true
},
"credentials": {
"gmailOAuth2": {
"id": "uBcIMfsTtKjexw7I",
"name": "Gmail (workfloowstutorial@gmail.com)"
}
},
"typeVersion": 2.1
},
{
"id": "7ae2dd15-472d-4a4b-b036-f80ebd7e3c28",
"name": "Split out assigned labels",
"type": "n8n-nodes-base.splitOut",
"position": [
580,
700
],
"parameters": {
"options": [],
"fieldToSplitOut": "labels"
},
"typeVersion": 1
},
{
"id": "744c7afa-75b1-4b3b-8ccb-e2106c01f387",
"name": "Merge corresponding labels",
"type": "n8n-nodes-base.merge",
"position": [
860,
580
],
"parameters": {
"mode": "combine",
"options": [],
"mergeByFields": {
"values": [
{
"field1": "name",
"field2": "labels"
}
]
},
"outputDataFrom": "input1"
},
"typeVersion": 2.1
},
{
"id": "e47424dc-f43e-41a9-b1e5-ab3e08cbf395",
"name": "Aggregate label IDs",
"type": "n8n-nodes-base.aggregate",
"position": [
1120,
580
],
"parameters": {
"options": [],
"fieldsToAggregate": {
"fieldToAggregate": [
{
"renameField": true,
"outputFieldName": "label_ids",
"fieldToAggregate": "id"
}
]
}
},
"typeVersion": 1
},
{
"id": "22ba8297-8efc-463e-8ae0-385fd94a205f",
"name": "Add labels to message",
"type": "n8n-nodes-base.gmail",
"position": [
1340,
580
],
"parameters": {
"labelIds": "={{ $json.label_ids }}",
"messageId": "={{ $('Gmail trigger').item.json[\"id\"] }}",
"operation": "addLabels"
},
"credentials": {
"gmailOAuth2": {
"id": "uBcIMfsTtKjexw7I",
"name": "Gmail (workfloowstutorial@gmail.com)"
}
},
"typeVersion": 2.1
},
{
"id": "7ebb1aad-00ad-43fa-9e07-e5f324864a74",
"name": "Assign labels for message",
"type": "@n8n\/n8n-nodes-langchain.chainLlm",
"position": [
-80,
580
],
"parameters": {
"prompt": "={{ $json.text }}",
"messages": {
"messageValues": [
{
"message": "Your task is to categorize the message according to the following labels.\n\nPartnership - email about sponsored content, cooperation etc.\nInquiry - email about products, services.\nNotification - email that doesn't require response. \n\nOne email can have more than one label. Return only label names in JSON format, nothing else. Do not make things up. "
}
]
}
},
"typeVersion": 1.3
},
{
"id": "2f82db6a-422c-4697-a629-cc782d88209d",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1100,
400
],
"parameters": {
"color": 4,
"width": 420.4803040774015,
"height": 240.57943708322733,
"content": "## Add AI labels to Gmail messages\nWith this workflow you can automatically set labels for your Gmail message according to its content. \n\nIn this workflow available are 3 labels: \"Partnership\", \"Inquiry\" and \"Notification\". Feel free to adjust labels according to your needs. \n\n**Please remember to set label names both in your Gmail account and workflow.**"
},
"typeVersion": 1
},
{
"id": "4a10fb2b-aebb-4735-bbdb-7f07f1136d95",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1100,
660
],
"parameters": {
"width": 421.0932411886662,
"height": 257.42916378714597,
"content": "## \u26a0\ufe0f Note\n\n1. Complete video guide for this workflow is available [on my YouTube](https:\/\/youtu.be\/a8Dhj3Zh9vQ). \n2. Remember to add your credentials and configure nodes (covered in the video guide).\n3. If you like this workflow, please subscribe to [my YouTube channel](https:\/\/www.youtube.com\/@workfloows) and\/or [my newsletter](https:\/\/workfloows.com\/).\n\n**Thank you for your support!**"
},
"typeVersion": 1
},
{
"id": "76e62351-d502-4377-9df2-fe92df00fe03",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-660,
400
],
"parameters": {
"width": 238.4602598584674,
"height": 348.5873725349161,
"content": "### Gmail Trigger\nReceive data from Gmail about new incoming message. \n\n\u26a0\ufe0f Set polling interval according to your needs."
},
"typeVersion": 1
},
{
"id": "c10702db-211f-4638-bcf0-fbbe18251cb7",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
60,
780
],
"parameters": {
"width": 241.53974014153226,
"height": 319.3323098457962,
"content": "###\n\n\n\n\n\n\n\n\n\n\n### JSON schema\nEdit JSON schema and label names according to your needs.\n\n\u26a0\ufe0f **Label names in system prompt and JSON schema should be the same.**"
},
"typeVersion": 1
},
{
"id": "cb6e3573-3d4d-4313-a97e-86a017438399",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
800,
420
],
"parameters": {
"width": 226.14233872620645,
"height": 347.0476323933831,
"content": "### Merge labels\nCombine labels retrieved from Gmail account and assigned by AI together."
},
"typeVersion": 1
},
{
"id": "8cfb4341-98e6-4944-b26c-15e39184f468",
"name": "Sticky Note6",
"type": "n8n-nodes-base.stickyNote",
"position": [
1060,
420
],
"parameters": {
"width": 452.48413953150185,
"height": 347.0476323933831,
"content": "### Aggregarte labels and add to message\nCreate array of label IDs and add to the desired email message in Gmail."
},
"typeVersion": 1
},
{
"id": "bb9766e8-0b72-47f8-9a8e-0b291609e814",
"name": "Sticky Note7",
"type": "n8n-nodes-base.stickyNote",
"position": [
-400,
400
],
"parameters": {
"width": 238.4602598584674,
"height": 348.5873725349161,
"content": "### Get message content\nBased on Gmail message ID retrieve body content of the email and pass it to AI chain."
},
"typeVersion": 1
},
{
"id": "48630cbd-8336-4577-928e-37341f09ef9b",
"name": "Sticky Note8",
"type": "n8n-nodes-base.stickyNote",
"position": [
-140,
400
],
"parameters": {
"width": 378.57661273793565,
"height": 348.5873725349161,
"content": "### Assign labels\nLet the AI decide which labels suit the best content of the message.\n\n\u26a0\ufe0f **Remember to edit system prompt** - modify label names and instructions according to your needs."
},
"typeVersion": 1
},
{
"id": "60a9d75e-1564-4b1d-b3f2-acc2e3bf2411",
"name": "JSON Parser",
"type": "@n8n\/n8n-nodes-langchain.outputParserStructured",
"position": [
140,
800
],
"parameters": {
"jsonSchema": "{\n \"type\": \"object\",\n \"properties\": {\n \"labels\": {\n \"type\": \"array\",\n \"items\": {\n \"type\": \"string\",\n \"enum\": [\"Inquiry\", \"Partnership\", \"Notification\"]\n }\n }\n },\n \"required\": [\"labels\"]\n}\n"
},
"typeVersion": 1
},
{
"id": "2bdf3fed-8a7f-411a-bad4-266bfea5cede",
"name": "OpenAI Chat",
"type": "@n8n\/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-120,
800
],
"parameters": {
"model": "gpt-4-turbo-preview",
"options": {
"temperature": 0,
"responseFormat": "json_object"
}
},
"credentials": {
"openAiApi": {
"id": "jazew1WAaSRrjcHp",
"name": "OpenAI (workfloows@gmail.com)"
}
},
"typeVersion": 1
}
],
"active": false,
"pinData": [],
"settings": {
"executionOrder": "v1"
},
"connections": {
"JSON Parser": {
"ai_outputParser": [
[
{
"node": "Assign labels for message",
"type": "ai_outputParser",
"index": 0
}
]
]
},
"OpenAI Chat": {
"ai_languageModel": [
[
{
"node": "Assign labels for message",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Gmail trigger": {
"main": [
[
{
"node": "Get message content",
"type": "main",
"index": 0
}
]
]
},
"Get all labels": {
"main": [
[
{
"node": "Merge corresponding labels",
"type": "main",
"index": 0
}
]
]
},
"Set label values": {
"main": [
[
{
"node": "Get all labels",
"type": "main",
"index": 0
},
{
"node": "Split out assigned labels",
"type": "main",
"index": 0
}
]
]
},
"Aggregate label IDs": {
"main": [
[
{
"node": "Add labels to message",
"type": "main",
"index": 0
}
]
]
},
"Get message content": {
"main": [
[
{
"node": "Assign labels for message",
"type": "main",
"index": 0
}
]
]
},
"Assign labels for message": {
"main": [
[
{
"node": "Set label values",
"type": "main",
"index": 0
}
]
]
},
"Split out assigned labels": {
"main": [
[
{
"node": "Merge corresponding labels",
"type": "main",
"index": 1
}
]
]
},
"Merge corresponding labels": {
"main": [
[
{
"node": "Aggregate label IDs",
"type": "main",
"index": 0
}
]
]
}
}
}How to Use an n8n Template
1
Create a New Workflow
Click "New Workflow" in your n8n dashboard to get started.
2
Copy & Paste Template
First, copy this template:
Click here to copy the JSON
.
Then, in n8n, click the three dots (···) → "Import from file" and paste the JSON code.
3
Customize the Nodes
Go through each node in the workflow to update inputs like spreadsheet IDs, email addresses, or message content. Adjust field mappings to match your data.
4
Grant Access
For nodes that connect to external apps (like Google Sheets or Slack), you'll need to grant access. Connect your accounts using OAuth or an API key and save the credentials in the node.
5
Test It
Run the workflow by clicking "Execute Node" for each step or "Run Once" for the whole thing. Check the right sidebar to inspect data and debug any errors (they'll show up in red).
6
Activate Workflow
Once everything works as expected, click the "Activate" toggle to turn your workflow on. You're all set!