Extract & Organize Email Invoices with Gmail, Drive & OpenAI GPT — n8n Workflow

High complexity⚡ Trigger20 nodes🏷️ Invoice Processingby Feras Dabour

Overview

Who’s it for

This template is for founders, finance teams, and solo operators who receive lots of invoices by email and want them captured automatically in a single, searchable source of truth. If you’re tired of hunting through your inbox for invoice PDFs or “that one receipt from three months ago,” this is for you.

What it does / How it works

The workflow polls your Gmail inbox on a schedule and fetches new messages including their attachments. A JavaScript Code node restructures all attach

Nodes used

Google SheetsGoogle DriveGmailCodeAI AgentOpenAI Chat ModelStructured Output Parser

Workflow Preview

Gmail Trigger based on user customized interv
then get the gmail parameter inclusive text and attachm
Extract the text from the pdf attachment if e
otherwise ignore and further process
Analyse the context of the mail and the attac
otherwise ignore and stop the process
Extract the relevant invoice parameters
date_email, date_invoice, invoice_nr, description, prov
Was the invoice in attachments or in the mail
Document the paramters in sheet, uoload the i
Document the paramters in sheet, generate a l
Who’s it for
This template is for founders, finance teams, and solo
modelmodelmodelparserparser
OpenAI Chat Model
Structured Output Parser
N
No Operation, do nothing
OpenAI Chat Model1
Structured Output Parser1
⚡
G
Gmail Trigger
Upload file
Invoice Recognition Agent
Invoice Data extractor
E
Extract from File
C
Check wether it is an in…
C
Check wether it was a fi…
Document the invoice par…
Update Invoice parameters
Update text Invoice para…
Mark a message as read
Code in JavaScript
M
Merge
Get a message
OpenAI Chat Model2
20 nodes21 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 20 nodes, connecting agent, code, extractfromfile.

  3. 3

    Output

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

Node Details (20)

GO

Google Sheets

googleSheets

#1
GO

Google Drive

googleDrive

#2
GM

Gmail

gmail

#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

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 → New → Import from file.
  3. 3Select the downloaded extract-organize-email-invoices-with-gmail-drive-openai-gpt 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 → Import from JSON:

{ "name": "Extract & Organize Email Invoices with Gmail, Drive & OpenAI GPT", "nodes": [...], ...}

Integrations

agentcodeextractfromfilegmailgmailtriggergoogledrivegooglesheetsiflmchatopenaimergeoutputparserstructured

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes20
Complexityhigh
Triggertrigger
CategoryInvoice Processing

Created by

Feras Dabour

Feras Dabour

@ferasdabour

Tags

agentcodeextractfromfilegmailgmailtriggergoogledrivegooglesheetsiflmchatopenaimerge
⚡

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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