Process invoices and send weekly AI reports with OpenAI and Gmail — Workflow n8n

Élevé complexité⚡ Déclencheur19 nœuds🏷️ Invoice Processingpar ResilNext

Aperçu

Overview This workflow automates invoice handling from upload to reporting using AI.

Users submit invoices through a simple form. The workflow extracts key details, validates the data, stores valid invoices, and sends email notifications. It also generates a weekly summary report automatically.

This helps reduce manual data entry and ensures consistent invoice processing.

How It Works

Form Submission Users upload an invoice (PDF or image) along with their email.

Initial Storage The ra

Nœuds utilisés

GmailCodeAI AgentOpenAI Chat ModelStructured Output Parser

Aperçu du workflow

How it works
This workflow helps you automatically process invoices
A user uploads an invoice file (PDF or image) through a
Form Input
Collects user email and invoice file via form trigger.
Configuration and Submission Storage
Defines report email and valid currencies used in valid
Stores raw form data for tracking and auditing purposes
File Extraction
Extracts text content from uploaded invoice files.
AI Processing
AI converts extracted text into structured invoice data
Validation
Checks date format, currency, and total amount accuracy
Success Path
Stores valid invoices and sends confirmation email.
Error Path
Sends email with validation errors for correction.
Weekly Trigger
Runs weekly to process stored invoices for reporting.
Report Generation
AI generates a formatted weekly invoice summary report.
Report Email
Sends weekly report to configured recipient.
modelparsermodel
⚡
I
Invoice Upload Form
W
Workflow Configuration
S
Store Raw Form Submission
E
Extract Invoice Content
Extract Invoice Data wit…
Invoice Data Schema Parser
Validate Invoice Data
C
Check Validation Result
P
Prepare Success Email Data
S
Store Validated Invoice
Send Success Email
P
Prepare Error Email Data
Send Error Email
⚡
W
Weekly Report Schedule
F
Fetch Weekly Invoices
Generate Weekly Report
Send Weekly Report Email
OpenAI GPT-5-mini Model
OpenAI GPT-5-mini Model …
19 nodes17 edges

Comment ça fonctionne

  1. 1

    Déclencheur

    Le workflow démarre avec un déclencheur déclencheur.

  2. 2

    Traitement

    Les données transitent par 19 nœuds, connecting agent, code, datatable.

  3. 3

    Sortie

    Le workflow termine son automatisation et livre le résultat à la destination configurée.

Détails des nœuds (19)

GM

Gmail

gmail

#1
CO

Code

code

#2
AI

AI Agent

n8n-nodes-langchain.agent

#3
OP

OpenAI Chat Model

n8n-nodes-langchain.lmChatOpenAi

#4
ST

Structured Output Parser

n8n-nodes-langchain.outputParserStructured

#5

Comment importer ce workflow

  1. 1Cliquez sur le bouton Télécharger JSON à droite pour enregistrer le fichier du workflow.
  2. 2Ouvrez votre instance n8n. Accédez à Workflows → Nouveau → Importer depuis un fichier.
  3. 3Sélectionnez le fichier process-invoices-and-send-weekly-ai-reports-with-openai-and-gmail téléchargé et cliquez sur Importer.
  4. 4Configurez les identifiants pour chaque nœud de service (clés API, OAuth, etc.).
  5. 5Cliquez sur Tester le workflow pour vérifier que tout fonctionne, puis activez-le.

Ou collez directement dans n8n → Importer depuis JSON :

{ "name": "Process invoices and send weekly AI reports with OpenAI and Gmail", "nodes": [...], ...}

Intégrations

agentcodedatatableextractfromfileformtriggergmailiflmchatopenaioutputparserstructuredscheduletriggerset

Obtenir ce workflow

Téléchargez et importez en un clic

Télécharger JSONVoir sur n8n.io
Nœuds19
Complexitéhigh
Déclencheurtrigger
CatégorieInvoice Processing

Créé par

ResilNext

ResilNext

@rnair1996

Tags

agentcodedatatableextractfromfileformtriggergmailiflmchatopenaioutputparserstructuredscheduletrigger
⚡

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🔗 Webhook·12 nodes