An automated lead management and CRM follow-up system built with n8n that detects lead responses and routes each lead into the correct follow-up path.

Engaged leads are synchronized with GoHighLevel, while non-responsive leads automatically generate ClickUp follow-up tasks. A state-based locking mechanism ensures each lead is processed exactly once.

The lead management process relied on manual coordination between Google Sheets, GoHighLevel, and ClickUp.

This created several problems:

Lead replies could be missed or delayed

CRM updates required manual work

Follow-up tasks had to be created repeatedly

Duplicate workflow executions could process the same lead multiple times

There was no reliable central view of each lead's processing state

I designed an event-driven n8n workflow with conditional routing and idempotent processing.

The system determines whether a lead has replied and automatically performs the appropriate action without requiring manual intervention.

Google Sheets detects a new lead or status change.

n8n checks whether the lead has replied and whether it has already been processed.

Replied leads are routed to GoHighLevel for CRM status updates.

Non-responsive leads generate a ClickUp follow-up task with lead details and due date.

The final processing state is written back to Google Sheets.

The workflow uses a simple but reliable decision structure:

The CRM record is updated so the sales team can immediately identify leads who have responded.

A follow-up task is automatically created with the relevant lead information and due date.

A key part of this automation is state-based locking.

Each lead contains a processed state that the workflow checks before performing downstream actions.

This prevents:

Duplicate ClickUp tasks

Repeated CRM updates

Multiple actions from repeated triggers

Unnecessary follow-up activity

The design ensures each lead is processed once even when multiple trigger events occur.

External API failures are handled through retry logic.

GoHighLevel and ClickUp actions can retry up to three times, while processing errors are recorded in the workflow data for troubleshooting.

This keeps the lead-management pipeline more resilient than a simple trigger-and-action automation.

Duplicate follow-up tasks prevented

Automated CRM status updates

Faster lead response handling

Real-time lead lifecycle visibility

Designed to process approximately 100–500 leads per day

n8n — workflow orchestration and routing

Google Sheets — lead source and processing state

GoHighLevel — CRM updates

ClickUp — automated follow-up tasks

Webhooks — event-driven triggers

JavaScript — workflow logic and data processing

Build Type: Self-initiated demonstration build Role: Workflow Automation Engineer Platform: n8n Industry: Lead Management / CRM Automation