Extract invoice data from Gmail to Airtable with Mistral OCR and GPT-4.1-mini — n8n Workflow

High complexity⚡ Trigger16 nodes🏷️ Invoice Processingby Safa Khan

Overview

This n8n template demonstrates how to automatically process invoice attachments from email using OCR and AI. When an invoice is received in Gmail, the workflow extracts structured invoice data and stores it in Airtable while preventing duplicates.

This automation is useful for freelancers, agencies, and finance teams who receive invoices by email and want to maintain a structured invoice database without manual data entry.

Who’s it for

This workflow is designed for:

Freelancers managing clie

Nodes used

AirtableHTTP RequestGmailAI AgentOpenAI Chat ModelStructured Output ParserMistral AI

Workflow Preview

🛠️ Setup Guide
Author: [Safa Khan]()
Follow the steps below to get this workflow up and runn
✅ Step 1: Choose Your Trigger
Determine what will kick off this workflow. In this exa
Trigger
Filter Logic
Image hosting
Duplicate Protection
OCR Extraction
AI Data Structuring
Store Invoice
Error Handling
modelparser
OpenAI Chat Model
Structured Output Parser
⚡
G
Gmail Trigger
I
If
N
No Operation, do nothing
host image
Extract text
Download Invoice
Analyze Invoices
Search Existing Invoices
C
Check for Duplicates
V
Validate Data
I
Invalid Data Handler
Send Error Email
N
No Operation, do nothing1
upload invoice & details
16 nodes15 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 16 nodes, connecting agent, airtable, gmail.

  3. 3

    Output

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

Node Details (16)

AI

Airtable

airtable

#1
HT

HTTP Request

httpRequest

#2
GM

Gmail

gmail

#3
AI

AI Agent

n8n-nodes-langchain.agent

#4
OP

OpenAI Chat Model

n8n-nodes-langchain.lmChatOpenAi

#5
ST

Structured Output Parser

n8n-nodes-langchain.outputParserStructured

#6
MI

Mistral AI

mistralAi

#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-invoice-data-from-gmail-to-airtable-with-mistral-ocr-and-gpt-41-mini 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 invoice data from Gmail to Airtable with Mistral OCR and GPT-4.1-mini", "nodes": [...], ...}

Integrations

agentairtablegmailgmailtriggerhttprequestiflmchatopenaimistralaioutputparserstructuredsetswitch

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes16
Complexityhigh
Triggertrigger
CategoryInvoice Processing

Created by

Safa Khan

Safa Khan

@safa-khan

Tags

agentairtablegmailgmailtriggerhttprequestiflmchatopenaimistralaioutputparserstructuredset
⚡

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🔗 Webhook·12 nodes