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Intermediate2 Hours
Build an AI Customer Support Agent with n8n and GPT-4
Business Value:Automate tier-1 customer support by routing incoming emails to GPT-4, generating context-aware replies based on your company documentation, and logging the interactions automatically.
Workflow Flowchart
[Incoming Email] -> [n8n Webhook] -> [GPT-4 Prompt] -> [Generate Draft Reply] -> [Save to Google Sheets]
Step-by-Step Implementation
1
Set up n8n and Gmail Trigger
Create a new workflow in n8n and add the Gmail trigger node. Configure it to watch for incoming emails with the label 'Support'.
2
Extract and Clean Data
Use the HTML Extractor node to strip out messy HTML from the email body so GPT-4 only reads clean text.
3
Connect OpenAI GPT-4 Node
Add the OpenAI node. Write a system prompt giving the AI the persona of a helpful support agent. Pass the cleaned email body as the user message.
4
Send Draft Reply via Gmail
Add a Gmail node to create a draft email using the GPT-4 output, allowing human review before sending.
Common Pitfalls
- Not providing enough business context in the System Prompt.
- Allowing the AI to send emails automatically without human review in the beginning.
Cost Estimate
n8n (Free self-hosted) + OpenAI API (~$0.02 per email)