Automation library · Lead generation

Classify and route cold email replies with Claude

Started by another system calling it, and works across Gmail, Google Sheets and Slack. It hands the judgement calls to Claude. 15 steps, 1 branch, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: Claude

15 stepsMedium: a working afternoon
1Branch: places the flow splits
1Loop or waits
3Services it connects to

The flow

Starts it 1Model 2Logic 3Service 9

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

  1. 1Receive Instantly ReplyWebhookStarts it
  2. 2Claude HaikuLm Chat AnthropicModel
  3. 3Extract Reply DataSetLogic
  4. 4Classify Reply IntentChain LlmModel
  5. 5Route by IntentSwitchLogic
  6. 6Notify Slack - Hot LeadSlackService
  7. 7Log to Sheets - Not NowGoogle SheetsService
  8. 8Remove from Instantly SequencesHttp RequestService
  9. 9Send Referral ReplyGmailService
  10. 10Send Calendar LinkGmailService
  11. 11Wait 30 DaysWaitLogic
  12. 12Log to Sheets - UnsubscribedGoogle SheetsService
  13. 13Log to Sheets - ReferralGoogle SheetsService
  14. 14Log to Sheets - InterestedGoogle SheetsService
  15. 15Re-add to Instantly SequenceHttp RequestService

How it's built

Starts on
Another system calling it
Steps
15, with 1 branch, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Gmail, Google Sheets, Slack
Model
Claude

Questions

What does it need to run?

An n8n account, plus your own Gmail, Google Sheets and Slack accounts, and a key for Claude. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

Does it use AI?

Yes. It calls Claude. 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.