Automation library · Money admin

Extract invoice data from Gmail PDF invoices into a Google

Started by an arriving email, and works across Gmail and Google Sheets. It hands the judgement calls to OpenRouter. 11 steps, 2 branches: a working afternoon to understand properly.

MediumCalls a model: OpenRouter

11 stepsMedium: a working afternoon
2Branches: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 1Model 3Logic 4Service 3

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

  1. 1New Invoice EmailGmail triggerStarts it
  2. 2OpenRouter ModelLm Chat Open RouterModel
  3. 3Invoice Fields ParserOutput Parser StructuredModel
  4. 4Split AttachmentsCodeLogic
  5. 5Extract Invoice DataAgentModel
  6. 6Has PDF Attachment?IfLogic
  7. 7Add MetadataSetLogic
  8. 8Extract PDF TextExtract From FileService
  9. 9Flag for Manual ReviewGoogle SheetsService
  10. 10Add to Invoice CRMGoogle SheetsService
  11. 11Text Extracted?IfLogic

How it's built

Starts on
An arriving email
Steps
11, with 2 branches
Size
Medium: a working afternoon
Connects to
Gmail, Google Sheets
Model
OpenRouter

Questions

What does it need to run?

An n8n account, plus your own Gmail and Google Sheets accounts, and a key for OpenRouter. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an arriving email.

Does it use AI?

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

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.