Automation library · Lead generation

Sales lead routing with Gemini and Model Evaluation Framework

Started by an arriving email, and works across Gmail. It hands the judgement calls to Gemini. 15 steps, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: Gemini

15 stepsMedium: a working afternoon
0Branches: places the flow splits
1Loop or waits
1Service it connects to

The flow

Starts it 2Model 4Logic 1Service 8

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

  1. 1Gmail TriggerGmail triggerStarts it
  2. 2When fetching a dataset rowEvaluation triggerStarts it
  3. 3Google Gemini 3 PROLm Chat Google GeminiModel
  4. 4Google Gemini 2.5 Flash LiteLm Chat Google GeminiModel
  5. 5Google Gemini 2.5 FlashLm Chat Google GeminiModel
  6. 6Sentiment AnalysisSentiment AnalysisModel
  7. 7Loop Over ItemsSplit In BatchesLogic
  8. 8Check PositiveEvaluationService
  9. 9Check NeutralEvaluationService
  10. 10Check NegativeEvaluationService
  11. 11Save OutputEvaluationService
  12. 12Send Hot Lead EmailGmailService
  13. 13Send Follow-up NotificationGmailService
  14. 14Send Marketing Insights EmailGmailService
  15. 15Set MetricsEvaluationService

How it's built

Starts on
An arriving email
Steps
15, 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. 15 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 15 steps before you point it at anything that matters.