Extract, validate, and log email invoices from Gmail to Google Sheets with GPT-4 — n8n 工作流

中 复杂度⚡ 触发器12 个节点🏷️ Invoice Processing作者：Pratyush Kumar Jha

概览

Inbox2Ledger is an end-to-end n8n template that turns a noisy finance inbox into a clean, structured ledger. It fetches emails, uses AI guardrails to keep only finance-relevant messages, extracts invoice/receipt fields via an OCR-style agent, validates and auto-categorizes each expense, generates a unique case ID, and appends the result to a Google Sheet for accounting or downstream automations.

Key Features

Trigger*: Form submission or scheduled fetch (sample *On form submission node included

使用的节点

Google SheetsGmailCodeAI AgentOpenAI Chat ModelGuardrails

工作流预览

Get all emails
Connect Gmail and fetch incoming messages or selected f
Inbox2Ledger is an end-to-end n8n template th
Filter finance emails
Apply AI guardrails and keyword filters to isolate invo
Extract details and log
Use LLM/OCR agent to extract vendor, date, invoice_id,
modelmodel
Get Email Content
Guardrail: Is Finance?
I
IF (Guardrail Passed)
F
Filter Finance Keywords
AI Agent (Email OCR)
Validate Extraction
C
Check for Errors
Apply Finance Rules
Log to Invoices Sheet
gpt 4o mini
OpenAI Chat Model
⚡
E
Enter Date till which yo…
12 nodes11 edges

工作原理

  1. 1

    触发器

    工作流由 触发器 触发器启动。

  2. 2

    处理

    数据流经 12 个节点, connecting agent, code, filter。

  3. 3

    输出

    工作流完成自动化并将结果发送到配置的目标。

节点详情 (12)

GO

Google Sheets

googleSheets

#1
GM

Gmail

gmail

#2
CO

Code

code

#3
AI

AI Agent

n8n-nodes-langchain.agent

#4
OP

OpenAI Chat Model

n8n-nodes-langchain.lmChatOpenAi

#5
GU

Guardrails

n8n-nodes-langchain.guardrails

#6

如何导入此工作流

  1. 1点击右侧 下载 JSON 按钮保存工作流文件。
  2. 2打开你的 n8n 实例，依次点击 工作流 → 新建 → 从文件导入。
  3. 3选择下载的 extract-validate-and-log-email-invoices-from-gmail-to-google-sheets-with-gpt-4 文件并点击导入。
  4. 4为每个服务节点配置 凭证（API 密钥、OAuth 等）。
  5. 5点击 测试工作流 验证一切正常，然后激活它。

或直接在 n8n → 从 JSON 导入 中粘贴：

{ "name": "Extract, validate, and log email invoices from Gmail to Google Sheets with GPT-4", "nodes": [...], ...}

集成

agentcodefilterformtriggergmailgooglesheetsguardrailsiflmchatopenai

获取此工作流

一键下载并导入

下载 JSON在 n8n.io 上查看
节点12
复杂度medium
触发器trigger
分类Invoice Processing

创建者

Pratyush Kumar Jha

Pratyush Kumar Jha

@pratyush

标签

agentcodefilterformtriggergmailgooglesheetsguardrailsiflmchatopenai
⚡

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Automate Custom QuickBooks Invoice PDFs & Email with n8n

Standard accounting templates often fail to reflect a premium brand identity. This sophisticated n8n workflow bridges the gap between financial record-keeping and professional client presentation. By moving beyond the native limitations of QuickBooks Online, this automation enables businesses to generate high-end, multi-page PDF invoices that align perfectly with their corporate styling. The process begins the moment a new invoice is generated in QuickBooks, triggering a webhook that captures real-time billing data. The workflow then utilizes advanced HTML-to-File conversion and custom Code nodes to structure data into a polished, branded layout. It handles complex logic such as line-item merging and multi-page formatting automatically. Once the document is rendered, the system bypasses generic 'no-reply' senders by routing the finalized PDF through your preferred email provider. This ensures a seamless, white-labeled experience for your clients while eliminating the manual overhead of exporting, styling, and attaching files. Ideal for agencies and service providers, this flow guarantees that your most frequent touchpoint—the bill—is as professional as your work. **Common Use Cases:** - High-end creative agencies requiring bespoke, white-labeled billing documents for premium clients. - Automated recurring subscription billing where custom tax disclosures or localized branding are required. - Service-based businesses needing to attach dynamic project reports or terms of service directly to QuickBooks invoices.

🔗 Webhook·12 nodes