# Send tiered payment reminders for overdue Odoo invoices: n8n workflow

> Started by a clock, and works across Gmail and Slack. 18 steps, 1 branch: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/send-tiered-payment-reminders-for-overdue-odoo-invoices (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 tiered payment reminders for overdue Odoo invoices

Started by a clock, and works across Gmail and Slack. 18 steps, 1 branch: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fsend-tiered-payment-reminders-for-overdue-odoo-invoices)

**18 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Logic 7 Service 10

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

- 1 **Weekly Schedule (Mon 9am)** Schedule trigger *Starts it*
- 2 **Odoo: Search Overdue Invoices** Odoo *Service*
- 3 **Compute Days Overdue** Set *Logic*
- 4 **Alert Ops - Odoo Fetch Failed** Gmail *Service*
- 5 **Aggregate All Overdue Invoices** Aggregate *Logic*
- 6 **Route by Escalation Tier** Switch *Logic*
- 7 **Build HTML Digest** Set *Logic*
- 8 **Odoo: Get Contact (Tier 1)** Odoo *Service*
- 9 **Odoo: Get Contact (Tier 2)** Odoo *Service*
- 10 **Alert Account Manager (30+ Days)** Slack *Service*
- 11 **Odoo: Log Escalation Activity** Odoo *Service*
- 12 **Under 7 Days - No Escalation** No Op *Logic*
- 13 **Send Weekly Digest Email** Gmail *Service*
- 14 **Post Digest to Finance Channel** Slack *Service*
- 15 **Send Reminder - 7+ Days** Gmail *Service*
- 16 **Log Odoo Lookup/Write Failures** No Op *Logic*
- 17 **Send Firm Reminder - 14+ Days** Gmail *Service*
- 18 **Log Notification Send Failures** No Op *Logic*

## How it's built

- **Starts on:** A clock
- **Steps:** 18, with 1 branch
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail, Slack
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

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

What starts it?

It starts on a clock.

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?

Plan an afternoon. 18 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 18 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-tiered-payment-reminders-for-overdue-odoo-invoices)
- **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)[Slack](https://millionrounds.com/workflows?service=Slack#library)

## Workflows like it

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

- [**Create human-reviewed personalized PDFs from Stripe payments** 18 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/create-human-reviewed-personalized-pdfs-from-stripe-payments)
- [**Process vendor invoices with UploadToURL and AWS Textract** 18 steps · Google Sheets, Slack](https://millionrounds.com/workflow/process-vendor-invoices-with-uploadtourl-and-aws-textract)
- [**Send proposal follow-ups and update deals with HubSpot** 18 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/send-proposal-follow-ups-and-update-deals-with-hubspot)
- [**Submit and approve employee expenses with Odoo and Slack** 18 steps · Gmail, Slack](https://millionrounds.com/workflow/submit-and-approve-employee-expenses-with-odoo-and-slack)
- [**Approve employee expenses with OpenAI and Google Sheets** 18 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/approve-employee-expenses-with-openai-and-google-sheets)
- [**Audit expense reports with OpenAI and Slack** 18 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/audit-expense-reports-with-openai-and-slack)