# Send escalating invoice reminders with Notion and Claude: n8n workflow

> Started by a clock, and works across Gmail, Notion and Telegram. It hands the judgement calls to Claude.

Source: https://millionrounds.com/workflow/send-escalating-invoice-reminders-with-notion-and-claude (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)

# Send escalating invoice reminders with Notion and Claude

Started by a clock, and works across Gmail, Notion and Telegram. It hands the judgement calls to Claude. 12 steps, 1 branch: a working afternoon to understand properly.

Medium Calls a model: Claude

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fsend-escalating-invoice-reminders-with-notion-and-claude)

**12 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**0** Loops or waits

**3** Services it connects to

## The flow

Starts it 1 Model 3 Logic 4 Service 4

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

- 1 **Every Morning at 8 AM** Schedule trigger *Starts it*
- 2 **Anthropic Chat Model** Lm Chat Anthropic *Model*
- 3 **Fetch Invoice Records** Notion *Service*
- 4 **Draft Reminder** Agent *Model*
- 5 **Structured Output Parser** Output Parser Structured *Model*
- 6 **Normalize Notion Records** Code *Logic*
- 7 **Build Output** Code *Logic*
- 8 **Calculate Overdue Status** Code *Logic*
- 9 **Send Reminder Email** Gmail *Service*
- 10 **Update Notion Record** Notion *Service*
- 11 **If At Risk** If *Logic*
- 12 **Alert Freelancer (At Risk)** Telegram *Service*

## How it's built

- **Starts on:** A clock
- **Steps:** 12, with 1 branch
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail, Notion, Telegram
- **Model:** Claude

## Questions

What does it need to run?

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

What starts it?

It starts on a clock.

Does it use AI?

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

How long does it take to set up?

Plan an afternoon. 12 steps is enough that you should read each one before running it.

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 12 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%2Fsend-escalating-invoice-reminders-with-notion-and-claude)
- **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)[Notion](https://millionrounds.com/workflows?service=Notion#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.

- [**AI auto-save Gmail receipts to Google Sheets + Google Drive** 12 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/ai-auto-save-gmail-receipts-to-google-sheets-google-drive)
- [**Automate employee trip expense processing with Jotform** 12 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/automate-employee-trip-expense-processing-with-jotform)
- [**Automate invoice processing & stock management with Gmail** 12 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automate-invoice-processing-and-stock-management-with-gmail)
- [**Automated Invoice Flow Manager with OpenAI and Gmail** 12 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automated-invoice-flow-manager-with-openai-and-gmail)
- [**Capture, classify, and log Gmail PDF invoices with Gemini** 12 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/capture-classify-and-log-gmail-pdf-invoices-with-gemini)
- [**Create invoices from Gmail labels with OpenAI and QuickBooks** 12 steps · calls a model · Gmail](https://millionrounds.com/workflow/create-invoices-from-gmail-labels-with-openai-and-quickbooks)