# Validate bills of lading, send Gmail replies, and post JSON: n8n workflow

> Started by an arriving email, and works across Gmail. It hands the judgement calls to Gemini. 12 steps: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/validate-bills-of-lading-send-gmail-replies-and-post-json (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Content](https://millionrounds.com/workflows?category=Content#library)

# Validate bills of lading, send Gmail replies, and post JSON

Started by an arriving email, and works across Gmail. It hands the judgement calls to Gemini. 12 steps: a working afternoon to understand properly.

Medium Calls a model: Gemini

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fvalidate-bills-of-lading-send-gmail-replies-and-post-json)

**12 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 1 Model 8 Logic 1 Service 2

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

- 1 **When Email Received** Gmail trigger *Starts it*
- 2 **Send Gmail Message** Gmail Tool *Service*
- 3 **Gemini Main Analysis 1** Lm Chat Google Gemini *Model*
- 4 **Gemini Fallback Analysis 1** Lm Chat Google Gemini *Model*
- 5 **Gemini Main Analysis 2** Lm Chat Google Gemini *Model*
- 6 **Gemini Fallback Analysis 2** Lm Chat Google Gemini *Model*
- 7 **Parse Structured Output** Output Parser Structured *Model*
- 8 **Analyze Document with Gemini** Google Gemini *Model*
- 9 **AI Validation Agent** Agent *Model*
- 10 **AI Document Analyzer Agent** Agent *Model*
- 11 **Validate Data with Code** Code *Logic*
- 12 **Post to Webhook API** Http Request *Service*

## How it's built

- **Starts on:** An arriving email
- **Steps:** 12
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail
- **Model:** Gemini

## Questions

What does it need to run?

An n8n account, plus your own Gmail account, 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.

## 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%2Fvalidate-bills-of-lading-send-gmail-replies-and-post-json)
- **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.

[Gmail](https://millionrounds.com/workflows?service=Gmail#library)

## Workflows like it

Also content, with the same services where possible, closest in size first.

- [**AI guest post generator with OpenAI and Google Sheets** 12 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/ai-guest-post-generator-with-openai-and-google-sheets)
- [**Auto-publish latest news on X with Bright Data** 12 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/auto-publish-latest-news-on-x-with-bright-data)
- [**Automate blog content creation with OpenAI and Google Sheets** 12 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automate-blog-content-creation-with-openai-and-google-sheets)
- [**Automate content publishing with OpenAI and Google Sheets** 12 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automate-content-publishing-with-openai-and-google-sheets)
- [**Automate longform video clipping with Vizard and Google Sheets** 12 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automate-longform-video-clipping-with-vizard-and-google-shee)
- [**Create multi-angle LinkedIn and Instagram carousels from RSS** 12 steps · calls a model · Gmail, RSS](https://millionrounds.com/workflow/create-multi-angle-linkedin-and-instagram-carousels-from-rss)