Email Classification
工作流概述
这是一个包含15个节点的复杂工作流,主要用于自动化处理各种任务。
工作流源代码
{
"id": "m8gr0YZgCx5Qrsia",
"meta": {
"instanceId": "b795c85ef5703ecdc784a39956949c45a099b0c52b9adbeeed744965b5aed696",
"templateCredsSetupCompleted": true
},
"name": "(G) - Email Classification",
"tags": [],
"nodes": [
{
"id": "0226578d-4741-42f2-8a7b-c750f75be78d",
"name": "Gmail Trigger",
"type": "n8n-nodes-base.gmailTrigger",
"position": [
0,
0
],
"parameters": {
"simple": false,
"filters": {},
"options": {},
"pollTimes": {
"item": [
{
"mode": "everyMinute"
}
]
}
},
"credentials": {
"gmailOAuth2": {
"id": "YNdPYS7HyXbJjy7l",
"name": "Gmail account (jkp@kajonkietsuksa.ac.th)"
}
},
"typeVersion": 1.2
},
{
"id": "48d0ee27-d4d6-4db4-843c-d9c18b934945",
"name": "Google Gemini Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
"position": [
220,
320
],
"parameters": {
"options": {},
"modelName": "models/gemini-2.0-flash-001"
},
"credentials": {
"googlePalmApi": {
"id": "ZK3aD9k31PG9XVBd",
"name": "Guitar's Gemini (babystoreroom@gmail.com)"
}
},
"typeVersion": 1
},
{
"id": "d7e8bed4-cadc-41e3-b793-cc8affb177cc",
"name": "AI Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"disabled": true,
"position": [
1420,
60
],
"parameters": {
"text": "=Here's the email context: {{ $('Classification Agent').item.json.text }}",
"options": {
"systemMessage": "You are my personal assistant for Kajonkietsuksa School.
Your role is to help me with any work-related tasks.
One of your main responsibilities is to write professional and polite reply emails whenever I receive an email in my inbox. Act as me, don't include something like \"here's a potential reply email or other\"
When writing a reply email:
Start by acknowledging the sender's message.
Answer their questions or address their requests clearly and directly.
Maintain a polite, professional, and helpful tone.
Keep the language simple and easy to understand.
If additional action is required from me, mention that I will get back to them soon.
Always end the email with a courteous closing line, such as \"Thank you\" or \"Best regards.\"
Keep your writing style consistent with a warm yet formal communication style that reflects the reputation of Kajonkietsuksa School.
"
},
"promptType": "define"
},
"typeVersion": 1.8
},
{
"id": "3b5cabb7-346f-4b69-b3f4-c61e78e2d8c7",
"name": "Groq Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatGroq",
"disabled": true,
"position": [
1440,
180
],
"parameters": {
"model": "meta-llama/llama-4-scout-17b-16e-instruct",
"options": {}
},
"credentials": {
"groqApi": {
"id": "ssFnosV0K9CllUnY",
"name": "(G) Groq account (jkp@kajonkietsuksa.ac.th)"
}
},
"typeVersion": 1
},
{
"id": "43984fb2-7a26-4e13-95ee-c29f0d9f2f24",
"name": "Gmail3",
"type": "n8n-nodes-base.gmail",
"disabled": true,
"position": [
1780,
60
],
"webhookId": "64df877a-5475-447d-860b-b62d4418d841",
"parameters": {
"message": "={{ $json.output }}",
"options": {},
"subject": "=Re: {{ $('Gmail Trigger').item.json.headers.subject }}",
"resource": "draft"
},
"credentials": {
"gmailOAuth2": {
"id": "YNdPYS7HyXbJjy7l",
"name": "Gmail account (jkp@kajonkietsuksa.ac.th)"
}
},
"typeVersion": 2.1
},
{
"id": "c269ec5e-f882-4458-ab52-46b719731309",
"name": "Classification Agent",
"type": "@n8n/n8n-nodes-langchain.textClassifier",
"position": [
240,
0
],
"parameters": {
"options": {
"systemPromptTemplate": "Please classify the text provided by the user into one of the following categories: {categories}, and use the provided formatting instructions below. Don't explain, and only output the json."
},
"inputText": "={{ $json.text || $json.html }}",
"categories": {
"categories": [
{
"category": "High Priority",
"description": "Emails requiring immediate attention or action, typically from key stakeholders, clients, or decision-makers. These emails often contain time-sensitive requests, deadlines, or escalated issues. Keywords: urgent, ASAP, immediate, deadline, action required, high priority"
},
{
"category": "KS Work Related",
"description": "Anything related to my school or education. Keyword: Kajonkietsuksa School, Kajonkietsuksa, School"
},
{
"category": "Promotion",
"description": "Anything related to updating on promotions. Keywords: newsletter, promotion, offer, sale, campaign, marketing, launch"
},
{
"category": "Other",
"description": "If you don't know what category is this email."
}
]
}
},
"typeVersion": 1
},
{
"id": "17be38df-c225-4d19-81ec-e205ff4b9f3c",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
60,
260
],
"parameters": {
"color": 4,
"width": 300,
"height": 80,
"content": "### 2) Change to your desire LLMs"
},
"typeVersion": 1
},
{
"id": "3e8ac267-c2ac-49cb-ad53-536510faa1a4",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-80,
-60
],
"parameters": {
"color": 4,
"content": "### 1) Change to your gmail's credential"
},
"typeVersion": 1
},
{
"id": "f5e2c92d-3335-4ed0-915e-f7edeb0b5a92",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
220,
-380
],
"parameters": {
"color": 4,
"width": 340,
"content": "### 3) Login to your gmail inbox
* Create a label with \"+\" icon
* Change the color of your choice"
},
"typeVersion": 1
},
{
"id": "4a8a7424-f9dd-42b1-b803-5d0dbe076956",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
220,
-160
],
"parameters": {
"color": 4,
"width": 320,
"content": "### 4) Agent instruction
* Input the category name that you just created in gmail.
* Description = Tell agent about how should it classify your email. Keywords can be useful to let your agent classify the email context."
},
"typeVersion": 1
},
{
"id": "24c7ef4e-7a68-4240-980b-02b994300084",
"name": "Add Label Promotion",
"type": "n8n-nodes-base.gmail",
"position": [
700,
200
],
"webhookId": "4e089f5f-58ea-4c8d-8870-3d155a81f0b7",
"parameters": {
"labelIds": [
"Label_4917715854276709190"
],
"messageId": "={{ $json.id }}",
"operation": "addLabels"
},
"credentials": {
"gmailOAuth2": {
"id": "YNdPYS7HyXbJjy7l",
"name": "Gmail account (jkp@kajonkietsuksa.ac.th)"
}
},
"typeVersion": 2.1
},
{
"id": "759f8cbe-4674-49e5-a52b-2acf208ffb22",
"name": "Add Label (KS Work Related)",
"type": "n8n-nodes-base.gmail",
"position": [
700,
0
],
"webhookId": "4e089f5f-58ea-4c8d-8870-3d155a81f0b7",
"parameters": {
"labelIds": [
"Label_4956837555783205638"
],
"messageId": "={{ $json.id }}",
"operation": "addLabels"
},
"credentials": {
"gmailOAuth2": {
"id": "YNdPYS7HyXbJjy7l",
"name": "Gmail account (jkp@kajonkietsuksa.ac.th)"
}
},
"typeVersion": 2.1
},
{
"id": "d07fe962-16c0-401a-b194-5ce7e6ad9746",
"name": "Add Label (High Priority)",
"type": "n8n-nodes-base.gmail",
"position": [
700,
-200
],
"webhookId": "4e089f5f-58ea-4c8d-8870-3d155a81f0b7",
"parameters": {
"labelIds": [
"Label_3750994713301985229"
],
"messageId": "={{ $json.id }}",
"operation": "addLabels"
},
"credentials": {
"gmailOAuth2": {
"id": "YNdPYS7HyXbJjy7l",
"name": "Gmail account (jkp@kajonkietsuksa.ac.th)"
}
},
"typeVersion": 2.1
},
{
"id": "7d0c9bd5-6150-4afa-9344-8bb3c1a6b01c",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
660,
-320
],
"parameters": {
"color": 4,
"width": 320,
"content": "### 5) Add Label Nodes
* In this option \"Label Names or IDs\" -> Select the category to match with the Classification Agent Node."
},
"typeVersion": 1
},
{
"id": "d57ecacb-a479-4bf7-b9b4-b9e14e30dcd7",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
980,
60
],
"parameters": {
"color": 4,
"width": 220,
"content": "### 6) Add-on
* You can add more category of your choice!"
},
"typeVersion": 1
}
],
"active": true,
"pinData": {},
"settings": {
"executionOrder": "v1"
},
"versionId": "c94df4ec-be75-449f-82fa-4e1f8878104a",
"connections": {
"AI Agent": {
"main": [
[
{
"node": "Gmail3",
"type": "main",
"index": 0
}
]
]
},
"Gmail Trigger": {
"main": [
[
{
"node": "Classification Agent",
"type": "main",
"index": 0
}
]
]
},
"Groq Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Classification Agent": {
"main": [
[
{
"node": "Add Label (High Priority)",
"type": "main",
"index": 0
}
],
[
{
"node": "Add Label (KS Work Related)",
"type": "main",
"index": 0
}
],
[
{
"node": "Add Label Promotion",
"type": "main",
"index": 0
}
]
]
},
"Google Gemini Chat Model": {
"ai_languageModel": [
[
{
"node": "Classification Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Add Label (KS Work Related)": {
"main": [
[]
]
}
}
}
功能特点
- 自动检测新邮件
- AI智能内容分析
- 自定义分类规则
- 批量处理能力
- 详细的处理日志
技术分析
节点类型及作用
- Gmailtrigger
- @N8N/N8N Nodes Langchain.Lmchatgooglegemini
- @N8N/N8N Nodes Langchain.Agent
- @N8N/N8N Nodes Langchain.Lmchatgroq
- Gmail
复杂度评估
配置难度:
维护难度:
扩展性:
实施指南
前置条件
- 有效的Gmail账户
- n8n平台访问权限
- Google API凭证
- AI分类服务订阅
配置步骤
- 在n8n中导入工作流JSON文件
- 配置Gmail节点的认证信息
- 设置AI分类器的API密钥
- 自定义分类规则和标签映射
- 测试工作流执行
- 配置定时触发器(可选)
关键参数
| 参数名称 | 默认值 | 说明 |
|---|---|---|
| maxEmails | 50 | 单次处理的最大邮件数量 |
| confidenceThreshold | 0.8 | 分类置信度阈值 |
| autoLabel | true | 是否自动添加标签 |
最佳实践
优化建议
- 定期更新AI分类模型以提高准确性
- 根据邮件量调整处理批次大小
- 设置合理的分类置信度阈值
- 定期清理过期的分类规则
安全注意事项
- 妥善保管API密钥和认证信息
- 限制工作流的访问权限
- 定期审查处理日志
- 启用双因素认证保护Gmail账户
性能优化
- 使用增量处理减少重复工作
- 缓存频繁访问的数据
- 并行处理多个邮件分类任务
- 监控系统资源使用情况
故障排除
常见问题
邮件未被正确分类
检查AI分类器的置信度阈值设置,适当降低阈值或更新训练数据。
Gmail认证失败
确认Google API凭证有效且具有正确的权限范围,重新进行OAuth授权。
调试技巧
- 启用详细日志记录查看每个步骤的执行情况
- 使用测试邮件验证分类逻辑
- 检查网络连接和API服务状态
- 逐步执行工作流定位问题节点
错误处理
工作流包含以下错误处理机制:
- 网络超时自动重试(最多3次)
- API错误记录和告警
- 处理失败邮件的隔离机制
- 异常情况下的回滚操作