# Self Improving Email AI Support with Human-in-the-Loop: n8n workflow

> Started by an arriving email, and works across Gmail and Google Sheets. It hands the judgement calls to Gemini.

Source: https://millionrounds.com/workflow/self-improving-email-ai-support-with-human-in-the-loop (Millionrounds; every figure on the page links to its filing or article)

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

# Self Improving Email AI Support with Human-in-the-Loop

Started by an arriving email, and works across Gmail and Google Sheets. It hands the judgement calls to Gemini. 16 steps, 1 branch: a working afternoon to understand properly.

Medium Calls a model: Gemini

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fself-improving-email-ai-support-with-human-in-the-loop)

**16 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Model 7 Logic 4 Service 4

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

- 1 **On New Email Received** Gmail trigger *Starts it*
- 2 **Structured Output Parser** Output Parser Structured *Model*
- 3 **Gemini Flash Lite Latest** Lm Chat Google Gemini *Model*
- 4 **Gemini Flash Latest** Lm Chat Google Gemini *Model*
- 5 **Gemini Flash Latest (1)** Lm Chat Google Gemini *Model*
- 6 **Is it a Support Request?** Text Classifier *Model*
- 7 **AI: Create Reusable Q&A** Chain Llm *Model*
- 8 **Find Answer with AI** Chain Llm *Model*
- 9 **Get Knowledge Base** Google Sheets *Service*
- 10 **Add to Knowledge Base** Google Sheets *Service*
- 11 **Parsed AI Response** Set *Logic*
- 12 **Combine into Knowledge Context** Aggregate *Logic*
- 13 **Start Again (with Saved Answer)** No Op *Logic*
- 14 **Support Answer Found** If *Logic*
- 15 **Send AI Answer** Gmail *Service*
- 16 **Ask Human for Help** Gmail *Service*

## How it's built

- **Starts on:** An arriving email
- **Steps:** 16, with 1 branch
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail, Google Sheets
- **Model:** Gemini

## Questions

What does it need to run?

An n8n account, plus your own Gmail 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. 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%2Fself-improving-email-ai-support-with-human-in-the-loop)
- **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)[Google Sheets](https://millionrounds.com/workflows?service=Google+Sheets#library)

## Workflows like it

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

- [**Answer customer questions and book jobs with OpenAI RAG** 16 steps · calls a model · Gmail, Google Calendar](https://millionrounds.com/workflow/answer-customer-questions-and-book-jobs-with-openai-rag)
- [**Answer customer questions and book jobs with OpenAI RAG** 16 steps · calls a model · Gmail, Google Calendar](https://millionrounds.com/workflow/answer-customer-questions-and-book-jobs-with-openai-rag-2)
- [**Answer support FAQs with Gemini and Supabase** 16 steps · calls a model · Google Sheets, Supabase vectors](https://millionrounds.com/workflow/answer-support-faqs-with-gemini-and-supabase)
- [**Automate IT support: Convert emails to Jira tickets** 16 steps · calls a model · Gmail, Jira](https://millionrounds.com/workflow/automate-it-support-convert-emails-to-jira-tickets)
- [**Automate WhatsApp customer support with FAQ** 16 steps · calls a model · Google Calendar, Google Sheets](https://millionrounds.com/workflow/automate-whatsapp-customer-support-with-faq)
- [**Automate product training & customer support with WhatsApp** 16 steps · calls a model · Google Sheets, WhatsApp](https://millionrounds.com/workflow/automate-product-training-and-customer-support-with-whatsapp)