# Screen and triage invoice emails for approval with MailMint: n8n workflow

> Started by another system calling it. It calls services over plain HTTP rather than through connectors.

Source: https://millionrounds.com/workflow/screen-and-triage-invoice-emails-for-approval-with-mailmint (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)

# Screen and triage invoice emails for approval with MailMint

Started by another system calling it. It calls services over plain HTTP rather than through connectors. 12 steps, 3 branches: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fscreen-and-triage-invoice-emails-for-approval-with-mailmint)

**12 steps** Medium: a working afternoon

**3** Branches: places the flow splits

**0** Loops or waits

**0** Services by connector: it calls them over plain HTTP

## The flow

Starts it 4 Logic 7 Service 1

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

- 1 **Receive the invoice email** Webhook *Starts it*
- 2 **Set your approval policy** Set *Logic*
- 3 **Is there an email to read?** If *Logic*
- 4 **Read the invoice fields** Mail Mint *Service*
- 5 **Explain what went wrong** Set *Logic*
- 6 **Did MailMint answer?** If *Logic*
- 7 **Say why a human is needed** Set *Logic*
- 8 **Return the error as JSON** Respond To Webhook *Starts it*
- 9 **Score it against your policy** Code *Logic*
- 10 **Return it for human review** Respond To Webhook *Starts it*
- 11 **Inside your policy?** If *Logic*
- 12 **Return it as approved** Respond To Webhook *Starts it*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 12, with 3 branches
- **Size:** Medium: a working afternoon
- **Connects to:** Nothing by connector; it calls services over plain HTTP
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n 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?

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%2Fscreen-and-triage-invoice-emails-for-approval-with-mailmint)
- **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.

## Workflows like it

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

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- [**Automated tour payment reminders with WhatsApp** 12 steps · Email, Excel](https://millionrounds.com/workflow/automated-tour-payment-reminders-with-whatsapp)
- [**Classify documents and extract invoice data** 12 steps · Google Sheets](https://millionrounds.com/workflow/classify-documents-and-extract-invoice-data)
- [**Count Xero invoices, bills, and credit notes** 12 steps](https://millionrounds.com/workflow/count-xero-invoices-bills-and-credit-notes)
- [**Create PDF invoices from Google Sheets with Docs and Gmail** 12 steps · Gmail, Google Docs](https://millionrounds.com/workflow/create-pdf-invoices-from-google-sheets-with-docs-and-gmail)
- [**Custom branded QuickBooks invoices to PDF & email** 12 steps · Email](https://millionrounds.com/workflow/custom-branded-quickbooks-invoices-to-pdf-and-email)