使用 Azure GPT-4.1 和人工验证自动处理 Gmail 中的发票
高级
这是一个Invoice Processing, AI Summarization领域的自动化工作流,包含 17 个节点。主要使用 If, Gmail, Merge, GmailTrigger, StopAndError 等节点。 通过 Azure GPT-4.1 和人工验证实现 Gmail 发票处理的自动化
前置要求
- •Google 账号和 Gmail API 凭证
- •OpenAI API Key
使用的节点 (17)
工作流预览
可视化展示节点连接关系,支持缩放和平移
导出工作流
复制以下 JSON 配置到 n8n 导入,即可使用此工作流
{
"id": "zZWPMtZ0TNebe1fI",
"meta": {
"instanceId": "9d85a8cf5ffde86dc8ca46087fd639ee7966eec2fa01c3b00004cfc2bd9c91b0"
},
"name": "Automate Invoice Processing from Gmail with Azure GPT-4.1 and Human Verification",
"tags": [],
"nodes": [
{
"id": "a6fd1034-16ac-48ce-a20e-5d00f9709d76",
"name": "Gmail Trigger",
"type": "n8n-nodes-base.gmailTrigger",
"position": [
40,
220
],
"parameters": {
"simple": false,
"filters": {
"sender": "youremail@gmail.com"
},
"options": {
"downloadAttachments": true
},
"pollTimes": {
"item": [
{
"mode": "everyMinute"
}
]
}
},
"credentials": {
"gmailOAuth2": {
"id": "T2T44GgzbxyaFB0y",
"name": "Gmail account"
}
},
"typeVersion": 1
},
{
"id": "b4829627-2c3e-477c-8ff0-9754f0010826",
"name": "IF: AI Says Yes",
"type": "n8n-nodes-base.if",
"position": [
1020,
260
],
"parameters": {
"conditions": {
"string": [
{
"value1": "={{ $json.output[0].insights[0].body }}",
"value2": "Yes",
"operation": "contains"
}
]
}
},
"typeVersion": 1
},
{
"id": "14933a59-1cd2-4572-aa92-8968ffa03b8a",
"name": "Save PDF Locally",
"type": "n8n-nodes-base.writeBinaryFile",
"position": [
1640,
220
],
"parameters": {
"options": {},
"fileName": "=C:/Test/Invoices/invoice_{{ $now.toFormat('yyyyLLdd_HHmmss') }}.pdf",
"dataPropertyName": "attachment_0"
},
"typeVersion": 1
},
{
"id": "0a17eed9-be81-4576-b218-ad12b3ffac28",
"name": "Merge",
"type": "n8n-nodes-base.merge",
"position": [
1480,
220
],
"parameters": {
"mode": "chooseBranch"
},
"retryOnFail": false,
"typeVersion": 3.2
},
{
"id": "e577ce73-0505-45f0-80cb-aa6d241f1add",
"name": "Information Extractor",
"type": "@n8n/n8n-nodes-langchain.informationExtractor",
"onError": "continueErrorOutput",
"position": [
660,
280
],
"parameters": {
"text": "={{ $json.text }}",
"options": {
"systemPromptTemplate": "You are an expert reviewing invoices. Analyze the texts and say if it is an invoice. Just answer 'Yes' or 'No'"
},
"schemaType": "manual",
"inputSchema": "{\n \"type\": \"array\",\n \"items\": {\n \"type\": \"object\",\n \"properties\": {\n \"topic\": { \"type\": \"string\" },\n \"insights\": {\n \"type\": \"array\",\n \"items\": {\n \"type\": \"object\",\n \"properties\": {\n \"title\": { \"type\": \"string\" },\n \"body\": { \"type\": \"string\" }\n }\n }\n }\n }\n }\n}"
},
"typeVersion": 1.2,
"alwaysOutputData": true
},
{
"id": "861f5008-bd46-4091-b040-b7b2fe1e6f45",
"name": "Is this PDF?",
"type": "n8n-nodes-base.if",
"position": [
260,
220
],
"parameters": {
"conditions": {
"string": [
{
"value1": "={{ $json.subject }}",
"value2": "Invoice",
"operation": "contains"
},
{
"value1": "={{ $binary.attachment_0 }}",
"operation": "isNotEmpty"
}
]
}
},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "e23bf999-1718-4489-a308-e244b22e14ad",
"name": "Send a message",
"type": "n8n-nodes-base.gmail",
"position": [
1020,
480
],
"webhookId": "aaafea40-4fcd-4775-82bf-5302914a681b",
"parameters": {
"sendTo": "receiver@gmail.com",
"message": "I had trouble parsing the recent invoice. Can you please confirm that it is an invoice?",
"options": {
"appendAttribution": false
},
"subject": "Approval Required!",
"operation": "sendAndWait",
"approvalOptions": {
"values": {
"approvalType": "double"
}
}
},
"credentials": {
"gmailOAuth2": {
"id": "T2T44GgzbxyaFB0y",
"name": "Gmail account"
}
},
"typeVersion": 2.1
},
{
"id": "bc2a8732-2e5f-421b-8df1-37a6ec2f7a2e",
"name": "Invoice Saved Message",
"type": "n8n-nodes-base.gmail",
"position": [
1800,
220
],
"webhookId": "aaafea40-4fcd-4775-82bf-5302914a681b",
"parameters": {
"sendTo": "receiver@gmail.com",
"message": "=Hi there,\nInvoice '{{ $json.subject }}' from \"{{ $json.from.value[0].name }}\" has been saved successfully in your Local Folder!\n\n",
"options": {
"appendAttribution": false
},
"subject": "=Invoice Downloaded"
},
"credentials": {
"gmailOAuth2": {
"id": "T2T44GgzbxyaFB0y",
"name": "Gmail account"
}
},
"typeVersion": 2.1
},
{
"id": "c9155103-6c04-438a-8e90-edb63b9ffd1a",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
0,
120
],
"parameters": {
"color": 7,
"width": 200,
"height": 300,
"content": "Triggers Gmail when new email from specific email account is received.\n"
},
"typeVersion": 1
},
{
"id": "a7a4385d-f00e-493c-9757-fbd660a64354",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
220,
120
],
"parameters": {
"color": 7,
"width": 180,
"height": 300,
"content": "Checks if there is any pdf attachments in email, and Invoice is included in subject\n"
},
"typeVersion": 1
},
{
"id": "da0c4d5e-9c24-4f3d-a17a-ca92d3299729",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
420,
0
],
"parameters": {
"color": 7,
"width": 180,
"height": 600,
"content": "If both are true, it extracts the information from the pdf.\n\nIf not, it gives an error saying that there is no invoice file included."
},
"typeVersion": 1
},
{
"id": "2196f52f-9e5b-4acd-b173-86ff7e986b71",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
620,
0
],
"parameters": {
"color": 7,
"width": 780,
"height": 660,
"content": "This checks the extracted information from the pdf and analyze if it is invoice.\n\nBased on the information, if it is invoice, it gives output of \"Yes\", otherwise \"No\".\n\nIf \"Yes\", it merges response to another node.\nIf \"No\", it sends an email to person and says that the file does not seem like an invoice and double check the file for review. When human responds that it is an invoice, it corrects its answer as \"Yes\".\n\nIf there is an error parsing the extracted texts, it sends an email to user to check the file and asks for approval."
},
"typeVersion": 1
},
{
"id": "ba5b7574-a2e1-401e-aab0-c7ca6b7856d8",
"name": "Azure OpenAI Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatAzureOpenAi",
"position": [
660,
440
],
"parameters": {
"model": "gpt-4.1",
"options": {}
},
"credentials": {
"azureOpenAiApi": {
"id": "QvYBe8DtpxGloSPZ",
"name": "Azure Open AI account"
}
},
"typeVersion": 1
},
{
"id": "42973f72-4ce9-4fff-90e5-9a09cc68f39b",
"name": "Manual Verification",
"type": "n8n-nodes-base.gmail",
"position": [
1200,
340
],
"webhookId": "69f41f8b-bad8-4fe6-83db-b46e64f10e7f",
"parameters": {
"sendTo": "receiveremail@gmail.com",
"message": "The latest invoice does not seem to be legit. Please verify it manually.",
"options": {
"appendAttribution": false
},
"subject": "Manual Verification Required"
},
"credentials": {
"gmailOAuth2": {
"id": "T2T44GgzbxyaFB0y",
"name": "Gmail account"
}
},
"typeVersion": 2.1
},
{
"id": "f1d15106-d677-4484-8602-7091c87be5c7",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
1420,
120
],
"parameters": {
"color": 7,
"width": 560,
"height": 300,
"content": "After verifying that the file is an invoice, it saves the file in the local directory. When the workflow is completed, it sends a success email to user."
},
"typeVersion": 1
},
{
"id": "f589f451-3faf-4930-ab12-4796f219d066",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
0,
0
],
"parameters": {
"width": 400,
"height": 100,
"content": "## Use this to automatically save invoice received in an email"
},
"typeVersion": 1
},
{
"id": "3b021445-e52e-4191-a454-654ba26e1bba",
"name": "Error Handler",
"type": "n8n-nodes-base.stopAndError",
"position": [
460,
440
],
"parameters": {
"errorMessage": "There is no pdf file!"
},
"typeVersion": 1
}
],
"active": false,
"pinData": {},
"settings": {
"executionOrder": "v1"
},
"versionId": "a74dc17a-a9fe-448e-a457-4b267ce63830",
"connections": {
"0a17eed9-be81-4576-b218-ad12b3ffac28": {
"main": [
[
{
"node": "14933a59-1cd2-4572-aa92-8968ffa03b8a",
"type": "main",
"index": 0
}
]
]
},
"861f5008-bd46-4091-b040-b7b2fe1e6f45": {
"main": [
[
{
"node": "0a17eed9-be81-4576-b218-ad12b3ffac28",
"type": "main",
"index": 0
},
{
"node": "e577ce73-0505-45f0-80cb-aa6d241f1add",
"type": "main",
"index": 0
}
],
[
{
"node": "3b021445-e52e-4191-a454-654ba26e1bba",
"type": "main",
"index": 0
}
]
]
},
"a6fd1034-16ac-48ce-a20e-5d00f9709d76": {
"main": [
[
{
"node": "861f5008-bd46-4091-b040-b7b2fe1e6f45",
"type": "main",
"index": 0
}
]
]
},
"b4829627-2c3e-477c-8ff0-9754f0010826": {
"main": [
[
{
"node": "0a17eed9-be81-4576-b218-ad12b3ffac28",
"type": "main",
"index": 1
}
],
[
{
"node": "42973f72-4ce9-4fff-90e5-9a09cc68f39b",
"type": "main",
"index": 0
}
]
]
},
"14933a59-1cd2-4572-aa92-8968ffa03b8a": {
"main": [
[
{
"node": "bc2a8732-2e5f-421b-8df1-37a6ec2f7a2e",
"type": "main",
"index": 0
}
]
]
},
"e577ce73-0505-45f0-80cb-aa6d241f1add": {
"main": [
[
{
"node": "b4829627-2c3e-477c-8ff0-9754f0010826",
"type": "main",
"index": 0
}
],
[
{
"node": "e23bf999-1718-4489-a308-e244b22e14ad",
"type": "main",
"index": 0
}
]
]
},
"ba5b7574-a2e1-401e-aab0-c7ca6b7856d8": {
"ai_languageModel": [
[
{
"node": "e577ce73-0505-45f0-80cb-aa6d241f1add",
"type": "ai_languageModel",
"index": 0
}
]
]
}
}
}常见问题
如何使用这个工作流?
复制上方的 JSON 配置代码,在您的 n8n 实例中创建新工作流并选择「从 JSON 导入」,粘贴配置后根据需要修改凭证设置即可。
这个工作流适合什么场景?
高级 - 发票处理, AI 摘要总结
需要付费吗?
本工作流完全免费,您可以直接导入使用。但请注意,工作流中使用的第三方服务(如 OpenAI API)可能需要您自行付费。
相关工作流推荐
发票处理系统用于提交
通过 Gmail、OCR.space、Slack 和 Xero 实现发票处理的自动化
If
Code
Xero
+
If
Code
Xero
24 节点Abi Odedeyi
发票处理
Fireflies会议转录和摘要自动化
使用Gemini和Gmail从Fireflies转录自动化会议摘要
Set
Code
Gmail
+
Set
Code
Gmail
26 节点Davide
文档提取
Gemini LLM、Gmail和Notion职位档案的自动化简历评分
Gemini LLM、Gmail和Notion职位档案的自动化简历评分
Wait
Gmail
Merge
+
Wait
Gmail
Merge
22 节点Agentick AI
人力资源
使用深度提取的LinkedIn爬虫,通过Google Gemini总结并存储到Supabase
使用Bright Data、Google Gemini和Supabase提取和总结LinkedIn个人资料
If
Set
Merge
+
If
Set
Merge
31 节点Ranjan Dailata
AI 摘要总结
AI 自动保存 Gmail 收据
AI自动保存Gmail收据到Google表格和Google云端硬盘
Set
Gmail
Merge
+
Set
Gmail
Merge
14 节点Matt Chong
发票处理
基于AI的MIS代理
基于AI的管理信息系统代理
If
Set
Code
+
If
Set
Code
129 节点Kumar Shivam
客户支持