Automation library · Customer support

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.

MediumCalls a model: Gemini

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16 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 1Model 7Logic 4Service 4

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

  1. 1On New Email ReceivedGmail triggerStarts it
  2. 2Structured Output ParserOutput Parser StructuredModel
  3. 3Gemini Flash Lite LatestLm Chat Google GeminiModel
  4. 4Gemini Flash LatestLm Chat Google GeminiModel
  5. 5Gemini Flash Latest (1)Lm Chat Google GeminiModel
  6. 6Is it a Support Request?Text ClassifierModel
  7. 7AI: Create Reusable Q&AChain LlmModel
  8. 8Find Answer with AIChain LlmModel
  9. 9Get Knowledge BaseGoogle SheetsService
  10. 10Add to Knowledge BaseGoogle SheetsService
  11. 11Parsed AI ResponseSetLogic
  12. 12Combine into Knowledge ContextAggregateLogic
  13. 13Start Again (with Saved Answer)No OpLogic
  14. 14Support Answer FoundIfLogic
  15. 15 Send AI AnswerGmailService
  16. 16Ask Human for HelpGmailService

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.