Invoice Processing: Email to PostgreSQL Database with GPT-4o & Discord Alerts — Flujo de trabajo n8n

Alta complejidad▶️ Manual23 nodos🏷️ Invoice Processingpor Halfbit 🚀

Descripción general

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

Nodos utilizados

PostgresDiscordCodeBasic LLM ChainOpenAI Chat ModelStructured Output Parser

Vista previa del flujo de trabajo

📥 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

Cómo funciona

  1. 1

    Disparador

    El flujo de trabajo comienza con un disparador manual.

  2. 2

    Procesamiento

    Los datos fluyen a través de 23 nodos, connecting chainllm, code, discord.

  3. 3

    Salida

    El flujo de trabajo completa su automatización y entrega el resultado al destino configurado.

Detalles de nodos (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

Cómo importar este flujo de trabajo

  1. 1Haz clic en el botón Descargar JSON a la derecha para guardar el archivo del flujo de trabajo.
  2. 2Abre tu instancia de n8n. Ve a Flujos de trabajo → Nuevo → Importar desde archivo.
  3. 3Selecciona el archivo invoice-processing-email-to-postgresql-database-with-gpt-4o-discord-alerts descargado y haz clic en Importar.
  4. 4Configura las credenciales para cada nodo de servicio (claves API, OAuth, etc.).
  5. 5Haz clic en Probar flujo de trabajo para verificar que todo funcione, luego actívalo.

O pega directamente en n8n → Importar desde JSON:

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

Integraciones

chainllmcodediscordemailreadimapextractfromfileiflmchatopenaimergeoutputparserstructuredpostgresset

Obtener este flujo de trabajo

Descarga e importa con un solo clic

Descargar JSONVer en n8n.io
Nodos23
Complejidadhigh
Disparadormanual
CategoríaInvoice Processing

Creado por

Halfbit 🚀

Halfbit 🚀

@halfbit

Etiquetas

chainllmcodediscordemailreadimapextractfromfileiflmchatopenaimergeoutputparserstructuredpostgres
⚡

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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