Extract and Organize Colombian Invoices with Gmail, GPT-4o & Google Workspace โ€” n8n Workflow

High complexityโšก Trigger22 nodes๐Ÿท๏ธ Invoice Processing๐Ÿ‘ 2,536 viewsby Juan Sanchez

Overview

๐Ÿงพ Personal Invoice Processor

This N8N workflow automates the extraction and organization of personal invoices in Colombia received via Gmail. It includes the following key steps:

๐Ÿ” Flow Summary

Email Trigger Polls Gmail every 30 minutes for emails with .zip attachments (assumed to contain invoices). Expects ZIP file following DIAN standards.

ZIP File Handling Extracts all files. Filters only PDF and XML files for processing.

Data Extraction & Processing Uses LangChain Agent +

Nodes used

Google SheetsGoogle DriveCompressionCodeAI AgentOpenAI Chat ModelStructured Output ParserCalculator

Workflow Preview

๐Ÿงพ Colombian electronic invoices processing
This N8N workflow automates the extraction and organiza
toolmodelparser
L
Loop Over Items
OpenAI Chat Model
Calculator
Structured Output Parser
โšก
O
On Email receipt
Get Filename and mimeType
F
Filter ZIP files only
Unzip Invoice
J
Just for style
Get filename and mimeTypโ€ฆ
S
Split XML and PDF
E
Extract PDF Data
E
Extract XML Data
C
Convert to JSON
A
Append both Docs
A
Aggregate all Data into โ€ฆ
Extract Data from PDF anโ€ฆ
Create initial PDF
M
Merge both flows
Update PDF with actual nโ€ฆ
Get Current Date
Create or update row
22 nodes24 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 22 nodes, connecting agent, aggregate, code.

  3. 3

    Output

    The workflow completes its automation and delivers the result to the configured destination.

Node Details (22)

GO

Google Sheets

googleSheets

#1
GO

Google Drive

googleDrive

#2
CO

Compression

compression

#3
CO

Code

code

#4
AI

AI Agent

n8n-nodes-langchain.agent

#5
OP

OpenAI Chat Model

n8n-nodes-langchain.lmChatOpenAi

#6
ST

Structured Output Parser

n8n-nodes-langchain.outputParserStructured

#7
CA

Calculator

n8n-nodes-langchain.toolCalculator

#8

How to Import This Workflow

  1. 1Click Download JSON button on the right to save the workflow file.
  2. 2Open your n8n instance. Go to Workflows โ†’ New โ†’ Import from file.
  3. 3Select the downloaded extract-and-organize-colombian-invoices-with-gmail-gpt-4o-google-workspace file and click Import.
  4. 4Set up credentials for each service node (API keys, OAuth, etc.).
  5. 5Click Test Workflow to verify everything works, then activate it.

Or paste directly in n8n โ†’ Import from JSON:

{ "name": "Extract and Organize Colombian Invoices with Gmail, GPT-4o & Google Workspace", "nodes": [...], ...}

Integrations

agentaggregatecodecompressionextractfromfilefiltergmailtriggergoogledrivegooglesheetslmchatopenaimergeoutputparserstructuredsplitinbatchesswitchtoolcalculatorxml

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes22
Complexityhigh
Triggertrigger
Views2,536

Created by

Juan Sanchez

Juan Sanchez

@juansave

Tags

agentaggregatecodecompressionextractfromfilefiltergmailtriggergoogledrivegooglesheetslmchatopenai
โšก

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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 touchpointโ€”the billโ€”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.

๐Ÿ”— Webhookยท12 nodes