Templates / Send GPT-4o follow-up emails to leads and detect replies with Gmail

Send GPT-4o follow-up emails to leads and detect replies with Gmail

Ready for 3.0

by Andrew ✓ · 99 views · created 2026-05-14 · Lead Nurturing, Multimodal AI

Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.

Nodes used (9)

AI AgentOpenAI Chat ModelGmailSlackGoogle Sheets

What it does

Who It's For Sales teams, agencies, and service businesses that follow up with inbound leads via email and want to automate the entire sequence without losing the personal touch. How It Works 1. Webhook receives the new lead form submission 2. Configure Variables node sets your sender name, email, company name, reply detection email, and wait time in one place 3. OpenAI writes a personalized first follow-up email based on the lead's inquiry details 4. Gmail sends the first email 5. Wait node holds the workflow for 48 hours 6. Gmail searches the inbox for any reply from the lead 7. If the lead replied: Slack notifies your team and Google Sheets logs the reply status, name, email, and timestamp 8. If no reply: OpenAI writes a second follow-up from a different angle and Gmail sends it Set Up Steps 1. Update the Configure Variables node with your sender name, email, company name, and reply detection email 2. Connect your Gmail, OpenAI, Slack, and Google Sheets credentials to each node 3. Create a Google Sheet with columns: Lead Name, Email, Reply Status, Date 4. Activate the workflow and test with a webhook POST request Requirements - Gmail account with OAuth credential - OpenAI API key - Slack workspace with a notifications channel - Google Sheet set up for reply logging

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