Automation library · Money admin

Capture, classify, and log Gmail PDF invoices with Gemini

Started by an arriving email, and works across Gmail, Google Drive and Google Sheets. It hands the judgement calls to Gemini. 12 steps, 2 branches, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: Gemini

12 stepsMedium: a working afternoon
2Branches: places the flow splits
1Loop or waits
3Services it connects to

The flow

Starts it 1Model 1Logic 7Service 3

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

  1. 1Gmail TriggerGmail triggerStarts it
  2. 2Has PDF Attachment?IfLogic
  3. 3Split OutSplit OutLogic
  4. 4Loop Over ItemsSplit In BatchesLogic
  5. 5Analyze documentGoogle GeminiModel
  6. 6Merge Corporate File + MetadataMergeLogic
  7. 7Merge Personal File + MetadataMergeLogic
  8. 8Edit FieldsSetLogic
  9. 9Upload to Corporate DriveGoogle DriveService
  10. 10Upload to Personal DriveGoogle DriveService
  11. 11Is Corporate Invoice?IfLogic
  12. 12Append row in sheetGoogle SheetsService

How it's built

Starts on
An arriving email
Steps
12, with 2 branches, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Gmail, Google Drive, Google Sheets
Model
Gemini

Questions

What does it need to run?

An n8n account, plus your own Gmail, Google Drive and Google Sheets accounts, and a key for Gemini. 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 Gemini. Model calls are billed by the provider, not by n8n.

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.