# Analyze incoming letters with Google Drive and OpenAI: n8n workflow

> Started by an event in a connected app, and works across Google Drive and Google Sheets. It hands the judgement calls to OpenAI.

Source: https://millionrounds.com/workflow/analysiere-eingehende-briefe-mit-google-drive-openai (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Research and reporting](https://millionrounds.com/workflows?category=Research+and+reporting#library)

# Analyze incoming letters with Google Drive and OpenAI

Started by an event in a connected app, and works across Google Drive and Google Sheets. It hands the judgement calls to OpenAI. 16 steps, 2 loops or waits: a working afternoon to understand properly.

Medium Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fanalysiere-eingehende-briefe-mit-google-drive-openai)

**16 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**2** Loops or waits

**2** Services it connects to

## The flow

Starts it 2 Model 1 Logic 6 Service 7

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

- 1 **Manuell starten (Bestand)** Manual trigger *Starts it*
- 2 **Google Drive Trigger** Google Drive trigger *Starts it*
- 3 **Dateien im Eingang auflisten** Google Drive *Service*
- 4 **Datei-Schleife** Split In Batches *Logic*
- 5 **Alle Dateien verarbeitet** No Op *Logic*
- 6 **Vorhandene Zeilen lesen** Google Sheets *Service*
- 7 **Vorhandene Zeilen aggregieren** Code *Logic*
- 8 **Datei herunterladen** Google Drive *Service*
- 9 **Dokument analysieren (KI)** Open Ai *Model*
- 10 **Zeile aufbauen** Code *Logic*
- 11 **Fehlerzeile aufbauen** Code *Logic*
- 12 **In Google Sheet eintragen** Google Sheets *Service*
- 13 **Fehler ins Sheet** Google Sheets *Service*
- 14 **Pause (Rate-Limit)** Wait *Logic*
- 15 **In Fehler-Ordner verschieben** Google Drive *Service*
- 16 **Ins Archiv verschieben** Google Drive *Service*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 16, 2 loops or waits
- **Size:** Medium: a working afternoon
- **Connects to:** Google Drive, Google Sheets
- **Model:** OpenAI

## Questions

What does it need to run?

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

What starts it?

It starts on an event in a connected app.

Does it use AI?

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

How long does it take to set up?

Plan an afternoon. 16 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 16 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%2Fanalysiere-eingehende-briefe-mit-google-drive-openai)
- **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.

[Google Drive](https://millionrounds.com/workflows?service=Google+Drive#library)[Google Sheets](https://millionrounds.com/workflows?service=Google+Sheets#library)

## Workflows like it

Also research and reporting, with the same services where possible, closest in size first.

- [**Amazon price drop analysis with Decodo and OpenAI** 16 steps · calls a model · Google Sheets](https://millionrounds.com/workflow/amazon-price-drop-analysis-with-decodo-and-openai)
- [**Analyze customer feedback with Azure GPT-4 and Jira** 16 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/analyze-customer-feedback-with-azure-gpt-4-and-jira)
- [**Audience problem keyword research workflow with OpenAI** 16 steps · calls a model · Google Sheets](https://millionrounds.com/workflow/audience-problem-keyword-research-workflow-with-openai)
- [**Audit Website Security Headers with Google Sheets Reporting** 16 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/audit-website-security-headers-with-google-sheets-reporting)
- [**Automated finance tracker with Gmail and Google Sheets** 16 steps · calls a model · Email, Gmail](https://millionrounds.com/workflow/automated-finance-tracker-with-gmail-and-google-sheets)
- [**Daily AI news summary workflow with Groq and OpenAI** 16 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/daily-ai-news-summary-workflow-with-groq-and-openai)