Invoice Processing: Email to PostgreSQL Database with GPT-4o & Discord Alerts — n8n ワークフロー

高 複雑度▶️ 手動23個のノード🏷️ Invoice Processing作成者：Halfbit 🚀

概要

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

使用ノード

PostgresDiscordCodeBasic LLM ChainOpenAI Chat ModelStructured Output Parser

ワークフロープレビュー

📥 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

仕組み

  1. 1

    トリガー

    このワークフローは 手動 トリガーで開始します。

  2. 2

    処理

    データは 23 個のノードを流れます, connecting chainllm, code, discord。

  3. 3

    出力

    ワークフローは自動化を完了し、設定された宛先に結果を配信します。

ノード詳細 (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

このワークフローのインポート方法

  1. 1右側の JSONをダウンロード ボタンをクリックしてワークフローファイルを保存します。
  2. 2n8nインスタンスを開き、ワークフロー → 新規 → ファイルからインポート に進みます。
  3. 3ダウンロードした invoice-processing-email-to-postgresql-database-with-gpt-4o-discord-alerts ファイルを選択し、インポートをクリックします。
  4. 4各サービスノードの 認証情報（APIキー、OAuthなど）を設定します。
  5. 5ワークフローをテスト をクリックして動作確認し、有効化します。

またはn8nの JSONからインポート に直接貼り付け：

{ "name": "Invoice Processing: Email to PostgreSQL Database with GPT-4o & Discord Alerts", "nodes": [...], ...}

インテグレーション

chainllmcodediscordemailreadimapextractfromfileiflmchatopenaimergeoutputparserstructuredpostgresset

このワークフローを取得

ワンクリックでダウンロード＆インポート

JSONをダウンロードn8n.ioで見る
ノード23
複雑度high
トリガーmanual
カテゴリInvoice Processing

作成者

Halfbit 🚀

Halfbit 🚀

@halfbit

タグ

chainllmcodediscordemailreadimapextractfromfileiflmchatopenaimergeoutputparserstructuredpostgres
⚡

n8n初めてですか？

n8nは無料のオープンソースワークフロー自動化ツールです。セルフホストまたはクラウド版をご利用いただけます。

n8nを無料で始める →

Related Invoice Processing Workflows

COCOEMEX+5
medium

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