Invoice Processing: Email to PostgreSQL Database with GPT-4o & Discord Alerts — n8n 工作流

高 复杂度▶️ 手动23 个节点🏷️ Invoice Processing作者：Halfbit 🚀

概览

AI-Powered Invoice Processing: from Email to Database & Chat Notifications

Automatically process PDF invoices directly from your email inbox. This workflow uses AI to extract key data, saves it to a PostgreSQL database, and instantly notifies you about the new document in your preferred chat application.

The workflow listens for new emails, fetches PDF attachments, and then passes their content to a Large Language Model (LLM) for intelligent recognition and data extraction. Finally, the inform

使用的节点

PostgresDiscordCodeBasic LLM ChainOpenAI Chat ModelStructured Output Parser

工作流预览

📥 Email Trigger (IMAP)
This node listens for new emails in your inbox and fetc
Setup Instructions:
- Go to Credentials and create new IMAP credentials
- Fill in: IM
🤖 AI Data Extraction (Basic LLM Chain)
This node sends the text from the PDF to an AI model (e
Setup Instructions:
- Provide a clear prompt des
🔑 OpenAI API (LLM Provider)
This node connects to OpenAI (or another AI provider) a
Setup Instructions:
- Log in to [OpenAI](https://platform.openai
📤 Chat Notification (Discord Webhook)
This node sends a summary of the extracted invoice to y
Setup Instructions:
- In Discord:
Go to Server Settings → Integrations →
❗ Don't forget to set your PostgreSQL credent
In every PostgreSQL-related node, you must manually sel
Instructions:
- Click on the node
- Go
🔀 Merge Node
This node merges metadata from the email (e.g., subject
Setup Instructions:
- Input 1 → AI output
- Input 2 → Email data
- Se
🗃️ PostgreSQL Insert
This node writes the extracted data into the `company`
Setup Instructions:
- Ensure your database has the correct schem
modelparser
E
Email Trigger (IMAP)
Discord
Basic LLM Chain
OpenAI Chat Model
Structured Output Parser
Code
E
Extract from File1
I
If
M
Merge
I
If1
I
If2
P
Prepare Company Data
Check Company
I
IF Company Does Not Exist
Add Company
S
Set Existing Company ID
S
Set New Company ID
M
Merge Company ID
Check Invoice
I
IF Invoice Does Not Exist
Add Invoice
I
Invoice Exists
M
Merge End
23 nodes25 edges

工作原理

  1. 1

    触发器

    工作流由 手动 触发器启动。

  2. 2

    处理

    数据流经 23 个节点, connecting chainllm, code, discord。

  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 (23)

PO

Postgres

postgres

#1
DI

Discord

discord

#2
CO

Code

code

#3
BA

Basic LLM Chain

n8n-nodes-langchain.chainLlm

#4
OP

OpenAI Chat Model

n8n-nodes-langchain.lmChatOpenAi

#5
ST

Structured Output Parser

n8n-nodes-langchain.outputParserStructured

#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 invoice-processing-email-to-postgresql-database-with-gpt-4o-discord-alerts 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": "Invoice Processing: Email to PostgreSQL Database with GPT-4o & Discord Alerts", "nodes": [...], ...}

集成

chainllmcodediscordemailreadimapextractfromfileiflmchatopenaimergeoutputparserstructuredpostgresset

获取此工作流

一键下载并导入

下载 JSON在 n8n.io 上查看
节点23
复杂度high
触发器manual
分类Invoice Processing

创建者

Halfbit 🚀

Halfbit 🚀

@halfbit

标签

chainllmcodediscordemailreadimapextractfromfileiflmchatopenaimergeoutputparserstructuredpostgres
⚡

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