# Process invoices & engineering emails with Gmail and Telegram: n8n workflow

> Started by an arriving email, and works across Gmail and Telegram. It hands the judgement calls to OpenRouter.

Source: https://millionrounds.com/workflow/process-invoices-and-engineering-emails-with-gmail-and-teleg (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Money admin](https://millionrounds.com/workflows?category=Money+admin#library)

# Process invoices & engineering emails with Gmail and Telegram

Started by an arriving email, and works across Gmail and Telegram. It hands the judgement calls to OpenRouter. 23 steps: large, and worth reading before you trust it with anything live.

Large Calls a model: OpenRouter

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fprocess-invoices-and-engineering-emails-with-gmail-and-teleg)

**23 steps** Large: read it before trusting it with anything live

**0** Branches: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Model 5 Logic 12 Service 5

The steps in the order they run, from what starts it.

- 1 **Gmail Trigger** Gmail trigger *Starts it*
- 2 **Structured Output Parser1** Output Parser Structured *Model*
- 3 **OpenRouter Chat Model1** Lm Chat Open Router *Model*
- 4 **Gemini** Lm Chat Open Router *Model*
- 5 **Filter1** Filter *Logic*
- 6 **AI Agent** Agent *Model*
- 7 **Information Extractor** Information Extractor *Model*
- 8 **Get a message** Gmail *Service*
- 9 **Reply to same thread** Gmail *Service*
- 10 **Extracting File Details** Set *Logic*
- 11 **Edit Fields1** Set *Logic*
- 12 **Edit Fields2** Set *Logic*
- 13 **Merge1** Merge *Logic*
- 14 **Debugged code to find attachment** Code *Logic*
- 15 **Send important details** Telegram *Service*
- 16 **Split Out** Split Out *Logic*
- 17 **Split Out1** Split Out *Logic*
- 18 **Extract from File** Extract From File *Service*
- 19 **Convert Names to download files** Code *Logic*
- 20 **Merge** Merge *Logic*
- 21 **Remove Duplicates** Remove Duplicates *Logic*
- 22 **Filter** Filter *Logic*
- 23 **Send a document (e.g. dwg files)** Telegram *Service*

## How it's built

- **Starts on:** An arriving email
- **Steps:** 23
- **Size:** Large: read it before trusting it with anything live
- **Connects to:** Gmail, Telegram
- **Model:** OpenRouter

## Questions

What does it need to run?

An n8n account, plus your own Gmail and Telegram accounts, and a key for OpenRouter. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an arriving email.

Does it use AI?

Yes. It calls OpenRouter. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Take your time. At 23 steps it is large: read it before trusting it with anything live.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 23 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fprocess-invoices-and-engineering-emails-with-gmail-and-teleg)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Gmail](https://millionrounds.com/workflows?service=Gmail#library)[Telegram](https://millionrounds.com/workflows?service=Telegram#library)

## Workflows like it

Also money admin, with the same services where possible, closest in size first.

- [**Automated expense tracking from emails & Telegram with Gemini** 23 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automated-expense-tracking-from-emails-and-telegram-with-gem)
- [**Extract invoice data to Excel with Gemini and OCR** 23 steps · calls a model · Excel, Telegram](https://millionrounds.com/workflow/extract-invoice-data-to-excel-with-gemini-and-ocr)
- [**Process receipts with Google Vision OCR and Telegram** 23 steps · calls a model · Google Sheets, Telegram](https://millionrounds.com/workflow/process-receipts-with-google-vision-ocr-and-telegram)
- [**Reconcile Stripe, bank, and e-commerce data with OpenAI** 23 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/reconcile-stripe-bank-and-e-commerce-data-with-openai)
- [**Extract and organize Colombian invoices with Gmail and OpenAI** 22 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/extract-and-organize-colombian-invoices-with-gmail-and-opena)
- [**Extract invoice data from Gmail PDFs** 22 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/extract-invoice-data-from-gmail-pdfs)