Automate Gmail Labeling with OpenAI GPT for Team Efficiency

Automate Gmail labeling for your communication team using the Gmail API and OpenAI GPT. This workflow intelligently categorizes incoming emails, ensuring your team focuses on high-priority messages and improves response times. Features real-time email processing, AI-powered categorization, and batch splitting for efficient handling of large volumes. Perfect for communication teams managing hundreds of emails daily, ensuring no important messages go unnoticed. Requires 2 accounts: Gmail OAuth and OpenAI API. Save up to 5 hours weekly by automating email organization, allowing your team to concentrate on critical tasks.

1 Trigger
34,450 views18 nodesMay 2025Charlotte Hayes

Categories

Ticket ManagementAI Summarization

APIs

Gmail API

AI Features

AI AgentOpenAI GPTAI Chat

Credentials

2 required

Quick Actions

Copy or download to import into your n8n instance

Workflow JSON
{
  "id": "MKPGGcZ4kNS2VaAd",
  "meta": {
    "instanceId": "c62c01f3e843893075a10f252ec7d6d69e5ab593af019f50055d506cb3081b99",
    "templateCredsSetupCompleted": true
  },
  "name": "Auto Gmail Labeling (Powered by OpenAI)",
  "tags": [
    {
      "id": "XCHEQnjQX9v45lVi",
      "name": "labeling",
      "createdAt": "2025-05-10T13:05:07.928Z",
      "updatedAt": "2025-05-10T13:05:07.928Z"
    },
    {
      "id": "rEeMluSnJ541dfuv",
      "name": "label",
      "createdAt": "2025-05-10T13:05:07.947Z",
      "updatedAt": "2025-05-10T13:05:07.947Z"
    },
    {
      "id": "wTkM9jCbEJKOQGvU",
      "name": "email",
      "createdAt": "2025-05-10T13:05:07.923Z",
      "updatedAt": "2025-05-10T13:05:07.923Z"
    },
    {
      "id": "bteUZZnDWPlLufzn",
      "name": "prod",
      "createdAt": "2025-04-18T15:09:08.645Z",
      "updatedAt": "2025-04-18T15:09:08.645Z"
    }
  ],
  "nodes": [
    {
      "id": "61d0e78d-34ea-4266-9d0d-16b917e2e934",
      "name": "Loop Over Items",
      "type": "n8n-nodes-base.splitInBatches",
      "position": [
        -1580,
        -560
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 3
    },
    {
      "id": "ceeb33f9-5edd-4760-ae69-de3f8f7c7fe4",
      "name": "Replace Me",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1000,
        -600
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "d9ddec50-7a7c-476b-af88-94d06fc3d2ce",
      "name": "If",
      "type": "n8n-nodes-base.if",
      "position": [
        -1140,
        -600
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 2,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "2f466934-e257-4315-8a7f-5e3dde987430",
              "operator": {
                "name": "filter.operator.equals",
                "type": "string",
                "operation": "equals"
              },
              "leftValue": "={{ $json.labelIds[2] }}",
              "rightValue": "={{ $json.labelIds[2] }}"
            }
          ]
        }
      },
      "typeVersion": 2.2
    },
    {
      "id": "6fdbf75a-182d-4793-b4c7-2a3c29127a4c",
      "name": "Merge",
      "type": "n8n-nodes-base.merge",
      "position": [
        -920,
        -700
      ],
      "parameters": {},
      "typeVersion": 3.1
    },
    {
      "id": "65925cff-ae6d-4d01-b04f-09081dda5f6f",
      "name": "Gmail - Get All Messages",
      "type": "n8n-nodes-base.gmail",
      "position": [
        -2120,
        -580
      ],
      "webhookId": "a501a86b-b2df-45ec-b0d9-178765859a0f",
      "parameters": {
        "limit": 20,
        "simple": false,
        "filters": {
          "readStatus": "both"
        },
        "options": {},
        "operation": "getAll"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "T6a7nzYASeRq8gwp",
          "name": "Gmail account [abc@mail.com]"
        }
      },
      "typeVersion": 2.1
    },
    {
      "id": "7c9da3f9-ab0c-4244-a086-04e36a22e5f2",
      "name": "Gmail - Single Message",
      "type": "n8n-nodes-base.gmail",
      "position": [
        -1340,
        -640
      ],
      "webhookId": "ebc7d7c4-aece-4cd4-a46f-dff18891931e",
      "parameters": {
        "simple": false,
        "options": {},
        "messageId": "={{ $json.id }}",
        "operation": "get"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "T6a7nzYASeRq8gwp",
          "name": "Gmail account [abc@mail.com]"
        }
      },
      "typeVersion": 2.1
    },
    {
      "id": "47aabef5-1f4e-4fa3-9fd9-f4ab724fc6d9",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -2440,
        -960
      ],
      "parameters": {
        "width": 3820,
        "height": 740,
        "content": "## Auto Gmail Labeling (Powered by OpenAI)"
      },
      "typeVersion": 1
    },
    {
      "id": "4635a3bf-7da7-45b7-9767-539831407a1e",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        -2340,
        -580
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "minutes",
              "minutesInterval": 2
            }
          ]
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "92f4c2be-42e7-49fe-a43a-66060495af30",
      "name": "Extract Email Data",
      "type": "n8n-nodes-base.set",
      "position": [
        -700,
        -700
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "2e246278-eccb-4cd5-8c93-7daa824066e3",
              "name": "id",
              "type": "string",
              "value": "={{ $json.id }}"
            },
            {
              "id": "06e5dde5-dfce-4d4d-859d-b364301cb5aa",
              "name": "from",
              "type": "string",
              "value": "={{ $json.headers.from }}"
            },
            {
              "id": "e10231b9-fbb1-447a-a3fc-3ba8e5a9d314",
              "name": "headers.subject",
              "type": "string",
              "value": "={{ $json.headers.subject }}"
            },
            {
              "id": "6a472d41-0f6e-4803-8d94-4b4f8272e66c",
              "name": "text",
              "type": "string",
              "value": "={{ $json.text }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "82ea2062-8dc8-4087-82e7-c45047e14d41",
      "name": "Categorize Email with AI",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        -480,
        -800
      ],
      "parameters": {
        "text": "=Here is the email details:\nFrom: { $('Merge').item.json.headers.from }}\nSubject line: {{ $json.headers.subject }}\nEmail Body: \n{{ $json.text }}",
        "options": {
          "systemMessage": "You are my Personal Email Labeler.  \nWhen I feed you the subject and body of a new email, you must assign exactly one label—no extra text.\n\nAvailable labels:\n- Newsletter  \n- Inquiry  \n- Invoice  \n- Proposal  \n- Action Required  \n- Follow-up Reminder  \n- Task  \n- Personal  \n- Urgent  \n- Bank  \n- Job Update  \n- Spam / Junk  \n- Social / Networking  \n- Receipt  \n- Event Invite  \n- Subscription Renewal  \n- System Notification  \n\nLabel definitions:\n1. Newsletter  \n   • Subscription updates, promotions, digests.  \n   • No reply needed—just file away.  \n2. Inquiry  \n   • Sender asks a question or requests information.  \n   • Prioritize and suggest replying.  \n3. Invoice  \n   • Billing, receipts, payment requests.  \n   • Flag if payment is due.  \n4. Proposal  \n   • Business offers, contracts, collaboration pitches.  \n   • Flag for review; consider acknowledging receipt.  \n5. Action Required  \n   • Requests that demand you do something (book, confirm, complete).  \n   • Mark and suggest a reminder.  \n6. Follow-up Reminder  \n   • Emails reminding you of something pending or that you already acted on.  \n   • Suggest checking status or pinging again.  \n7. Task  \n   • Contains to-do items or project steps.  \n   • Extract tasks, prioritize by deadline.  \n8. Personal  \n   • From friends or family; non-work.  \n   • Keep accessible but low urgency unless marked urgent.  \n9. Urgent  \n   • Critical deadlines, emergencies, time-sensitive.  \n   • Bump to top of your inbox; reply ASAP.  \n10. Bank  \n    • Statements, alerts, transaction notices, fraud warnings from your bank.  \n    • Flag if action is needed (e.g., verify, transfer, dispute).  \n11. Job Update  \n    • Direct messages from recruiters/HR or alerts from job portals (LinkedIn, Naukri, etc.).  \n    • Flag as relevant opportunity; suggest acknowledging or bookmarking.  \n12. Spam / Junk  \n    • Unwanted bulk mail, phishing attempts, obvious ads.  \n    • Auto-archive or delete.  \n13. Social / Networking  \n    • Notifications from social sites (GitHub, Twitter, forums) not job-related.  \n    • File separately from Job Update.  \n14. Receipt  \n    • E-commerce order confirmations, tickets, one-off purchase receipts.  \n    • Archive after processing.  \n15. Event Invite  \n    • Calendar invitations or RSVPs (Google Meet, Zoom, Outlook).  \n    • Accept/decline or add to calendar.  \n16. Subscription Renewal  \n    • Reminders for software licenses, memberships, domain renewals.  \n    • Flag for manual renewal.  \n17. System Notification  \n    • Alerts from monitoring tools, CI/CD, cloud services, security scanners.  \n    • Triage or forward to team channel.\n\nRules:\n- Read subject + body.  \n- Choose the single best label.  \n- Output **only** that label."
        },
        "promptType": "define",
        "hasOutputParser": true
      },
      "typeVersion": 1.7
    },
    {
      "id": "bd3e558c-1e2a-4962-bf65-c92edfaad559",
      "name": "Store AI Category",
      "type": "n8n-nodes-base.set",
      "position": [
        -100,
        -700
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "2494d69d-3e5e-42ba-88d2-b76ca1962881",
              "name": "output",
              "type": "string",
              "value": "={{ $json.output }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "b7e2e5a9-772b-4f8b-a018-d59924e80fd5",
      "name": "List All Gmail Labels",
      "type": "n8n-nodes-base.gmail",
      "position": [
        120,
        -600
      ],
      "webhookId": "5c3cbc0b-9239-4a17-a8ec-bc8819341e47",
      "parameters": {
        "resource": "label",
        "returnAll": true
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "T6a7nzYASeRq8gwp",
          "name": "Gmail account [abc@mail.com]"
        }
      },
      "typeVersion": 2.1
    },
    {
      "id": "0361804b-a792-4f12-862e-09b6de749128",
      "name": "Check if Label Exists",
      "type": "n8n-nodes-base.compareDatasets",
      "position": [
        340,
        -720
      ],
      "parameters": {
        "options": {
          "multipleMatches": "first"
        },
        "fuzzyCompare": true,
        "mergeByFields": {
          "values": [
            {
              "field1": "output",
              "field2": "name"
            }
          ]
        }
      },
      "typeVersion": 2.3
    },
    {
      "id": "65203535-4a68-4b7e-836b-93aba10b5314",
      "name": "Apply Label to Email",
      "type": "n8n-nodes-base.gmail",
      "position": [
        780,
        -600
      ],
      "webhookId": "4a35699e-da45-48e9-8e12-d22b2dcca62e",
      "parameters": {
        "labelIds": "={{ $json.different.id.inputB }}",
        "messageId": "={{ $('Extract Email Data').item.json.id }}",
        "operation": "addLabels"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "T6a7nzYASeRq8gwp",
          "name": "Gmail account [abc@mail.com]"
        }
      },
      "typeVersion": 2.1
    },
    {
      "id": "c693da56-6238-4c21-bdb6-6e3aceffd4a5",
      "name": "Apply New Label",
      "type": "n8n-nodes-base.gmail",
      "position": [
        560,
        -800
      ],
      "webhookId": "a6722fdc-15cb-4796-b82d-53cc23060640",
      "parameters": {
        "name": "={{ $('Store AI Category').item.json.output }}",
        "options": {},
        "resource": "label",
        "operation": "create"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "T6a7nzYASeRq8gwp",
          "name": "Gmail account [abc@mail.com]"
        }
      },
      "typeVersion": 2.1
    },
    {
      "id": "86a440fa-b761-4b3f-ae7b-b5fb30a11f9d",
      "name": "Create New Label",
      "type": "n8n-nodes-base.gmail",
      "position": [
        780,
        -800
      ],
      "webhookId": "9e401ad8-b89c-4015-a3cf-b1000ac51ae1",
      "parameters": {
        "labelIds": "={{ $json.id }}",
        "messageId": "={{ $('Extract Email Data').item.json.id }}",
        "operation": "addLabels"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "T6a7nzYASeRq8gwp",
          "name": "Gmail account [abc@mail.com]"
        }
      },
      "typeVersion": 2.1
    },
    {
      "id": "59b0ed3f-7a2c-44f3-8e7c-ebb91ead16d2",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        -400,
        -580
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4.1-nano",
          "cachedResultName": "gpt-4.1-nano"
        },
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "PLkPXwnjTc0ag3xa",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "ced7a41e-7df9-4c73-ab00-e24677326652",
      "name": "Filter Emails Without Excluded Labels",
      "type": "n8n-nodes-base.code",
      "position": [
        -1900,
        -580
      ],
      "parameters": {
        "jsCode": "const excludedLabelIds = [\n  \"Label_5\",   // Newsletter\n  \"Label_21\",  // Inquiry\n  \"Label_11\",  // Invoice\n  \"Label_9\",   // Proposal\n  \"Label_52\",  // Action Required\n  \"Label_55\",  // Follow-up Reminder\n  \"Label_53\",  // Task\n  \"Label_44\",  // Personal\n  \"Label_54\",  // Urgent\n  \"Label_12\",  // Bank\n  \"Label_3\",   // Job Update\n  \"Label_42\",  // Spam / Junk\n  \"Label_7\",   // Social / Networking\n  \"Label_8\",   // Receipt\n  \"Label_2\",   // Event Invite\n  \"Label_10\",  // Subscription Renewal\n  \"Label_4\"    // System Notification\n];\n\n\nreturn items.filter(item => {\n  const labels = item.json.labelIds || [];\n  // Exclude if ANY excluded label is present\n  return !labels.some(label => excludedLabelIds.includes(label));\n});\n"
      },
      "typeVersion": 2
    }
  ],
  "active": true,
  "pinData": {},
  "settings": {
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": "9GaFMSfyUS2pdk24",
    "executionOrder": "v1"
  },
  "versionId": "f7da3241-2d4c-4d48-9090-09ba07607d42",
  "connections": {
    "If": {
      "main": [
        [],
        [
          {
            "node": "Merge",
            "type": "main",
            "index": 1
          }
        ]
      ]
    },
    "Merge": {
      "main": [
        [
          {
            "node": "Extract Email Data",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Replace Me": {
      "main": [
        [
          {
            "node": "Loop Over Items",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Apply New Label": {
      "main": [
        [
          {
            "node": "Create New Label",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Loop Over Items": {
      "main": [
        [],
        [
          {
            "node": "Gmail - Single Message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Create New Label": {
      "main": [
        [
          {
            "node": "Replace Me",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Schedule Trigger": {
      "main": [
        [
          {
            "node": "Gmail - Get All Messages",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "Categorize Email with AI",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Store AI Category": {
      "main": [
        [
          {
            "node": "Check if Label Exists",
            "type": "main",
            "index": 0
          },
          {
            "node": "List All Gmail Labels",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Extract Email Data": {
      "main": [
        [
          {
            "node": "Categorize Email with AI",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Apply Label to Email": {
      "main": [
        [
          {
            "node": "Replace Me",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check if Label Exists": {
      "main": [
        [
          {
            "node": "Apply New Label",
            "type": "main",
            "index": 0
          }
        ],
        [],
        [
          {
            "node": "Apply Label to Email",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "List All Gmail Labels": {
      "main": [
        [
          {
            "node": "Check if Label Exists",
            "type": "main",
            "index": 1
          }
        ]
      ]
    },
    "Gmail - Single Message": {
      "main": [
        [
          {
            "node": "If",
            "type": "main",
            "index": 0
          },
          {
            "node": "Merge",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Categorize Email with AI": {
      "main": [
        [
          {
            "node": "Store AI Category",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Gmail - Get All Messages": {
      "main": [
        [
          {
            "node": "Filter Emails Without Excluded Labels",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Filter Emails Without Excluded Labels": {
      "main": [
        [
          {
            "node": "Loop Over Items",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

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How to Use This Workflow

1Import to n8n

  1. Copy the JSON using the button above
  2. Open your n8n instance
  3. Click “Import workflow” or press Ctrl+V
  4. Paste the JSON and click “Import”

2Before Running

Configure credentials and update service-specific settings before executing the workflow. Review required credentials in the Technical Details section above.

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