Auto-label incoming Gmail messages with AI nodes
Workflow JSON
{"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": "", "name": "[Your gmailOAuth2]"}}, "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": "", "name": "[Your gmailOAuth2]"}}, "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": "", "name": "[Your gmailOAuth2]"}}, "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": "", "name": "[Your gmailOAuth2]"}}, "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": "", "name": "[Your openAiApi]"}}, "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 Import This Workflow
- 1Copy the workflow JSON above using the Copy Workflow JSON button.
- 2Open your n8n instance and go to Workflows.
- 3Click Import from JSON and paste the copied workflow.
Don't have an n8n instance? Start your free trial at n8nautomation.cloud
Related Templates
Automate Blog Creation in Brand Voice with AI
Generate blog posts in your brand's unique voice and style directly within WordPress using this powerful AI-driven workflow. It begins by fetching existing articles from your blog via an HTTP request, then intelligently extracts their content and structure using an HTML node and an AI chain LLM to understand your established writing patterns. Concurrently, an AI information extractor analyzes these articles to pinpoint and define your brand's distinct voice characteristics. This extracted style and voice, along with the structural insights, are then fed into an AI content generation agent which crafts new blog post drafts. Finally, these AI-generated articles are automatically saved as drafts in your WordPress instance, ready for review and publication. This workflow is ideal for marketing teams, content creators, and agencies looking to scale their content production while maintaining consistent brand messaging and reducing the manual effort involved in drafting new posts, ultimately saving significant time and resources.
Auto-Tag Blog Posts in WordPress with AI
Automatically tag your WordPress blog posts with relevant keywords using the power of AI. This n8n workflow connects your WordPress site with OpenAI's advanced language models to intelligently analyze new or existing articles and assign appropriate tags, streamlining your content management process. It starts by either triggering manually or by an RSS Feed Trigger monitoring your blog for new content, then sends the article text to an OpenAI Chat Model for tag generation. The workflow then checks your existing WordPress tags via an HTTP Request to avoid duplicates, creates any new tags needed with another HTTP Request, and finally updates the WordPress post with the newly generated and existing tags. This automation is perfect for content managers, marketing teams, and bloggers who want to improve SEO, enhance content discoverability, and reduce the manual effort of categorizing a large volume of articles, ultimately saving significant time and ensuring consistent tagging across your entire blog.
Extract spend details (template)
Automate the extraction and tracking of spend details directly from your email inbox into Google Sheets. This workflow connects Gmail to automatically retrieve invoice and payment emails, then uses AI models like Google Gemini Chat Model and Groq Chat Model to intelligently parse and extract key financial data. The extracted information, including vendor, amount, date, and itemized details, is then seamlessly organized and sent to Google Sheets for centralized record-keeping. This powerful automation is ideal for marketing teams, small businesses, and freelancers who need to efficiently monitor expenses, reconcile accounts, and gain better financial visibility without manual data entry, saving significant time and reducing errors in financial tracking.