使用Gemini 2.5 Pro AI分类自动标记Gmail邮件

• •Google 账号和 Gmail API 凭证

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  "nodes": [
    {
      "id": "f5583750-3712-45ab-b80d-e6ef59e1e6dd",
      "name": "Gmail 触发器",
      "type": "n8n-nodes-base.gmailTrigger",
      "position": [
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      ],
      "parameters": {
        "filters": {
          "readStatus": "unread"
        },
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        }
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "DMM81jCjgMwmkeIf",
          "name": "N8N Automations Google Credential"
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      "name": "向模型发送消息",
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      "parameters": {
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          "__rl": true,
          "mode": "list",
          "value": "models/gemini-2.5-pro",
          "cachedResultName": "models/gemini-2.5-pro"
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        "options": {
          "systemMessage": "=You are an email classifier assistant.\nOnly respond with the most suitable existing Gmail label for this email from the following list: {{ $json.labelList }}.\nNever invent a label—not in the list. Respond with multiple matching label names which are seperated with single comma's make sure every labels are seperated using a comma, and nothing else."
        },
        "messages": {
          "values": [
            {
              "content": "=Below is a new email.\nSubject: {{ $('Gmail Trigger').item.json.Subject }}\nBody: {{ $('Gmail Trigger').item.json.snippet }}\nWhich Gmail label does this email belong to?"
            }
          ]
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        "googlePalmApi": {
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    },
    {
      "id": "4a2fcba6-5e5e-4fea-8a87-94f774a18e54",
      "name": "为邮件添加标签",
      "type": "n8n-nodes-base.gmail",
      "position": [
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      ],
      "webhookId": "fe713b17-a055-40d5-9e3d-1ef22940d963",
      "parameters": {
        "labelIds": "={{ $json.labelIds }}",
        "messageId": "={{ $('Gmail Trigger').item.json.id }}",
        "operation": "addLabels"
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      "credentials": {
        "gmailOAuth2": {
          "id": "DMM81jCjgMwmkeIf",
          "name": "N8N Automations Google Credential"
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      "typeVersion": 2.1
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      "name": "获取多个标签",
      "type": "n8n-nodes-base.gmail",
      "position": [
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        -80
      ],
      "webhookId": "4d911551-faee-4329-a67a-9a2ee147088a",
      "parameters": {
        "resource": "label",
        "returnAll": true
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      "credentials": {
        "gmailOAuth2": {
          "id": "DMM81jCjgMwmkeIf",
          "name": "N8N Automations Google Credential"
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              "name": "labelList",
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              "value": "={{ $json.labels.map(item => item.name).join(', ') }}"
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        "aggregate": "aggregateAllItemData",
        "destinationFieldName": "labels"
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        "jsCode": "// Get all input items (your AI output should be in items[0], and label map in items[0].json.labels)\nconst items = $input.all();\n\n// 1. Parse comma-separated label names returned by the AI node\nlet resultLabels = items[0].json.content.parts[0].text\n  .split(\",\")\n  .map((label) => label.trim())\n  .filter((label) => label.length > 0);\n\n// 2. Get the label mapping array from aggregate node (should be in items[0].json.labels)\nconst labelObjects = $('Aggregate').first().json.labels || [];\nconsole.log(\"LABEL\", labelObjects);\n\n// 3. Map label names to IDs using the mapping array\nconst labelIds = resultLabels\n  .map((lName) => {\n    const match = labelObjects.find((obj) => obj.name === lName);\n    return match ? match.id : null;\n  })\n  .filter(Boolean); // remove nulls\n\n// 4. Output as n8n expects\nreturn [\n  {\n    json: {\n      labelIds,\n    },\n  },\n];\n"
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      "position": [
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      ],
      "parameters": {
        "width": 496,
        "height": 480,
        "content": "## 📨 AI Gmail 自动标签器：工作原理"
      },
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    },
    {
      "id": "0409c111-441c-4ff5-99e6-39098ca775a8",
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      "type": "n8n-nodes-base.stickyNote",
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      "parameters": {
        "width": 464,
        "height": 336,
        "content": "## 🛠️ 使用方法"
      },
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    }
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    "Code": {
      "main": [
        [
          {
            "node": "Add label to message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Aggregate": {
      "main": [
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            "node": "Edit Fields",
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    "Edit Fields": {
      "main": [
        [
          {
            "node": "Message a model",
            "type": "main",
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    "Gmail Trigger": {
      "main": [
        [
          {
            "node": "Get many labels",
            "type": "main",
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    "Get many labels": {
      "main": [
        [
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            "node": "Aggregate",
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    "Message a model": {
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            "node": "Code",
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