Automation library · AI assistants

Smart Gmail auto-labeler with Gemini

Started by an arriving email, and works across Gmail. It hands the judgement calls to Gemini. 16 steps, 2 branches, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: Gemini

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16 stepsMedium: a working afternoon
2Branches: places the flow splits
1Loop or waits
1Service it connects to

The flow

Starts it 2Model 3Logic 5Service 6

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

  1. 1Gmail TriggerGmail triggerStarts it
  2. 2Google Gemini Chat ModelLm Chat Google GeminiModel
  3. 3Get Emails By Sender EmailGmail ToolService
  4. 4Get Emails By LabelGmail ToolService
  5. 5Structured Output ParserOutput Parser StructuredModel
  6. 6When clicking ‘Execute workflow’Manual triggerStarts it
  7. 7Get Labels InfoGmailService
  8. 8Loop Over ItemsSplit In BatchesLogic
  9. 9Email Classifier AgentAgentModel
  10. 10Get many messagesGmailService
  11. 11Check Label ExistenceCodeLogic
  12. 12If not NoneIfLogic
  13. 13If Not AssignedIfLogic
  14. 14Convert Label to Label IDCodeLogic
  15. 15Add label to threadGmailService
  16. 16Remove Inbox label from threadGmailService

How it's built

Starts on
An arriving email
Steps
16, with 2 branches, 1 loop or waits
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. 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.