Process Invoices & Engineering Emails with Gmail, AI Analysis & Telegram Alerts β€” n8n Workflow

High complexity⚑ Trigger23 nodes🏷️ Invoice Processingby Limbraj More

Overview

Automate admin tasks for manufacturing companies by processing emails, extracting key data from invoices & purchase orders, and delivering instant alerts via Gmail and Telegram.

πŸ“ Description This workflow automatically:

Fetches incoming emails from Gmail

Classifies emails (invoices, purchase orders, payment follow-up, etc.) using AI

Sends tailored auto-replies based on content and attachment presence

Extracts structured data from attached invoices/POs (PDFs etc.)

Delivers alerts and docum

Nodes used

TelegramGmailCodeAI AgentStructured Output ParserInformation ExtractorOpenRouter Chat Model

Workflow Preview

MULTIPLE DOCUMENTS EXTRACTOR
Telegram - Invoice and details to Engineering
modelmodelparser
⚑
G
Gmail Trigger
Get a message
AI Agent
Debugged code to find at…
Structured Output Parser1
OpenRouter Chat Model1
Information Extractor
S
Split Out
E
Extract from File
E
Edit Fields1
E
Edit Fields2
S
Split Out1
M
Merge
F
Filter
M
Merge1
F
Filter1
E
Extracting File Details
Convert Names to downloa…
R
Remove Duplicates
Gemini
Reply to same thread
Send important details
Send a document (e.g. dw…
23 nodes24 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 23 nodes, connecting agent, code, extractfromfile.

  3. 3

    Output

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

Node Details (23)

TE

Telegram

telegram

#1
GM

Gmail

gmail

#2
CO

Code

code

#3
AI

AI Agent

n8n-nodes-langchain.agent

#4
ST

Structured Output Parser

n8n-nodes-langchain.outputParserStructured

#5
IN

Information Extractor

n8n-nodes-langchain.informationExtractor

#6
OP

OpenRouter Chat Model

n8n-nodes-langchain.lmChatOpenRouter

#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 β†’ New β†’ Import from file.
  3. 3Select the downloaded process-invoices-engineering-emails-with-gmail-ai-analysis-telegram-alerts 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 β†’ Import from JSON:

{ "name": "Process Invoices & Engineering Emails with Gmail, AI Analysis & Telegram Alerts", "nodes": [...], ...}

Integrations

agentcodeextractfromfilefiltergmailgmailtriggerinformationextractorlmchatopenroutermergeoutputparserstructuredremoveduplicatessetsplitouttelegram

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes23
Complexityhigh
Triggertrigger

Created by

Limbraj More

Limbraj More

@limbrajmore

Tags

agentcodeextractfromfilefiltergmailgmailtriggerinformationextractorlmchatopenroutermergeoutputparserstructured
⚑

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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 touchpointβ€”the billβ€”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.

πŸ”— WebhookΒ·12 nodes