Automation library · Money admin

Automate invoice processing from Gmail with Azure GPT-4.1

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

MediumCalls a model: Azure OpenAI

11 stepsMedium: a working afternoon
2Branches: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 1Model 2Logic 4Service 4

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

  1. 1Gmail TriggerGmail triggerStarts it
  2. 2Azure OpenAI Chat ModelLm Chat Azure Open AiModel
  3. 3Is this PDF?IfLogic
  4. 4Information ExtractorInformation ExtractorModel
  5. 5MergeMergeLogic
  6. 6Error HandlerStop And ErrorLogic
  7. 7IF: AI Says YesIfLogic
  8. 8Send a messageGmailService
  9. 9Save PDF LocallyWrite Binary FileService
  10. 10Manual VerificationGmailService
  11. 11Invoice Saved MessageGmailService

How it's built

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

Questions

What does it need to run?

An n8n account, plus your own Gmail account, and a key for Azure OpenAI. 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 Azure OpenAI. 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.