# Generate branded invoice PDFs from webhook orders with PolyDoc: n8n workflow

> Started by another system calling it, and works across Email. 7 steps, 1 branch: small enough to read in one sitting and change without fear.

Source: https://millionrounds.com/workflow/generate-branded-invoice-pdfs-from-webhook-orders-with-polyd (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)

# Generate branded invoice PDFs from webhook orders with PolyDoc

Started by another system calling it, and works across Email. 7 steps, 1 branch: small enough to read in one sitting and change without fear.

Small

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fgenerate-branded-invoice-pdfs-from-webhook-orders-with-polyd)

**7 steps** Small: readable in one sitting

**1** Branch: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 3 Logic 2 Service 2

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

- 1 **Receive order** Webhook *Starts it*
- 2 **Valid order?** If *Logic*
- 3 **Build invoice** Code *Logic*
- 4 **Reject (422)** Respond To Webhook *Starts it*
- 5 **Render invoice PDF** Poly Doc *Service*
- 6 **Email invoice** Email Send *Service*
- 7 **Return PDF** Respond To Webhook *Starts it*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 7, with 1 branch
- **Size:** Small: readable in one sitting
- **Connects to:** Email
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Email account. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Not long. At 7 steps it can be read in one sitting and changed without fear.

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 7 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%2Fgenerate-branded-invoice-pdfs-from-webhook-orders-with-polyd)
- **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.

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

## Workflows like it

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

- [**Automated PDF invoice generator with Google Sheets TemplatesOn** 7 steps · Email, Google Drive](https://millionrounds.com/workflow/automated-pdf-invoice-generator-with-google-sheets-templates)
- [**Automated Unpaid Invoice Remainder with Airtable** 7 steps · Airtable, Email](https://millionrounds.com/workflow/automated-unpaid-invoice-remainder-with-airtable)
- [**Generate ZUGFeRD/Factur-X e-invoices from webhook orders** 7 steps · Email](https://millionrounds.com/workflow/generate-zugferd-factur-x-e-invoices-from-webhook-orders)
- [**Send digital products after Stripe payments with Google Drive** 7 steps · Email, Google Drive](https://millionrounds.com/workflow/send-digital-products-after-stripe-payments-with-google-driv)
- [**Automated request-to-quote with OpenAI and Google Sheets** 7 steps · calls a model · Email, Google Sheets](https://millionrounds.com/workflow/automated-request-to-quote-with-openai-and-google-sheets)
- [**Enterprise expense & invoice fraud detection with OpenAI** 7 steps · calls a model · Email, Google Sheets](https://millionrounds.com/workflow/enterprise-expense-and-invoice-fraud-detection-with-openai)