Automation library · Money admin

Generate invoices, save to Drive and send email to customer

Started by another system calling it, and works across Email, Google Drive and Google Sheets. 11 steps, 1 branch: a working afternoon to understand properly.

Medium

11 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
3Services it connects to

The flow

Starts it 1Logic 4Service 6

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

  1. 1Webhook SimulatorWebhookStarts it
  2. 2Generate Invoice IDCodeLogic
  3. 3Check if ID Already ExistsGoogle SheetsService
  4. 4If Does not ExistIfLogic
  5. 5Set FieldsSetLogic
  6. 6Create Invoice HTMLCodeLogic
  7. 7HTML to PDFHttp RequestService
  8. 8Download PDF from APIHttp RequestService
  9. 9Upload PDF to GDriveGoogle DriveService
  10. 10Email Invoice to CustomerEmail SendService
  11. 11Append Details to Invoices SheetGoogle SheetsService

How it's built

Starts on
Another system calling it
Steps
11, with 1 branch
Size
Medium: a working afternoon
Connects to
Email, Google Drive, Google Sheets
Model
None. This is plumbing, not judgement

Questions

What does it need to run?

An n8n account, plus your own Email, Google Drive and Google Sheets 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?

Plan an afternoon. 11 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 11 steps before you point it at anything that matters.