# Process e-commerce orders with Gmail and Slack: n8n workflow

> Started by another system calling it, and works across Gmail and Slack. 26 steps, 3 branches: large, and worth reading before you trust it with anything live.

Source: https://millionrounds.com/workflow/process-e-commerce-orders-with-gmail-and-slack (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 e-commerce orders with Gmail and Slack

Started by another system calling it, and works across Gmail and Slack. 26 steps, 3 branches: large, and worth reading before you trust it with anything live.

Large

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fprocess-e-commerce-orders-with-gmail-and-slack)

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

**3** Branches: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 6 Logic 11 Service 9

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

- 1 **Webhook - New Order** Webhook *Starts it*
- 2 **Error Trigger** Error trigger *Starts it*
- 3 **Validate Order** Code *Logic*
- 4 **Format Error** Code *Logic*
- 5 **IF - Valid Order** If *Logic*
- 6 **Slack - Error Alert** Slack *Service*
- 7 **API - Verify Payment** Http Request *Service*
- 8 **Format Validation Error** Code *Logic*
- 9 **IF - Payment OK** If *Logic*
- 10 **Respond - Validation Error** Respond To Webhook *Starts it*
- 11 **API - Check Stock** Http Request *Service*
- 12 **Format Payment Failed** Code *Logic*
- 13 **IF - In Stock** If *Logic*
- 14 **Respond - Payment Failed** Respond To Webhook *Starts it*
- 15 **API - Reserve Inventory** Http Request *Service*
- 16 **Format Out of Stock** Code *Logic*
- 17 **API - Create Order** Http Request *Service*
- 18 **Respond - Out of Stock** Respond To Webhook *Starts it*
- 19 **API - Generate Shipping** Http Request *Service*
- 20 **Format Email** Code *Logic*
- 21 **Send Confirmation Email** Gmail *Service*
- 22 **Slack - Notify Team** Slack *Service*
- 23 **Prepare Audit Entry** Code *Logic*
- 24 **API - Log Audit** Http Request *Service*
- 25 **Format Success** Code *Logic*
- 26 **Respond - Success** Respond To Webhook *Starts it*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 26, with 3 branches
- **Size:** Large: read it before trusting it with anything live
- **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 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?

Take your time. At 26 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 26 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-e-commerce-orders-with-gmail-and-slack)
- **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.

- [**Turn agency timesheets into invoices and alerts with Odoo** 26 steps · Gmail, Slack](https://millionrounds.com/workflow/turn-agency-timesheets-into-invoices-and-alerts-with-odoo)
- [**Generate service quotes with OpenAI and Telegram** 26 steps · calls a model · Gmail, Telegram](https://millionrounds.com/workflow/generate-service-quotes-with-openai-and-telegram)
- [**Send donor thank-you receipts and weekly digests** 26 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/send-donor-thank-you-receipts-and-weekly-digests)
- [**Generate and track invoices with HubSpot and Gmail** 25 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/generate-and-track-invoices-with-hubspot-and-gmail)
- [**Automated template delivery system with Stripe and Gmail** 25 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automated-template-delivery-system-with-stripe-and-gmail)
- [**Create AI proposals from Fireflies transcripts with OpenAI** 25 steps · calls a model · Gmail, Google Docs](https://millionrounds.com/workflow/create-ai-proposals-from-fireflies-transcripts-with-openai)