Answer Gmail support emails with OpenAI and a Pinecone knowledge base

by Atharva Ashtekar ✓ · 0 views · created 2026-10-14 · Ticket Management, AI RAG

What this workflow does

This workflow has 43 nodes and runs manually, when you click “Execute workflow” (plus 1 other trigger). Along the way it connects Gmail. It also calls api.openai.com over HTTP.

How it runs

Trigger: Manually, when you click “Execute workflow” (plus 1 other trigger).

1. config (Code): runs custom JavaScript code
2. read the email (Code): runs custom JavaScript code
3. a readable email? (If): checks a condition and branches into true / false
4. OpenAI configured? (If): checks a condition and branches into true / false
5. STOP: unreadable email (Code): runs custom JavaScript code
6. build the classification request (Code): runs custom JavaScript code
7. classify by keywords (Code): runs custom JavaScript code
8. [cred] OpenAI - classify the email (HTTP Request): calls api.openai.com (POST)
9. a support request? (If): checks a condition and branches into true / false
10. apply the AI classification (Code): runs custom JavaScript code

…plus 31 more steps. See the full node list below.

Services it uses

Gmail

HTTP calls to: api.openai.com

Before you upgrade to n8n 3.0

Nodes used (6)

• Gmail Triggern8n-nodes-base.gmailTrigger
• Manual Triggern8n-nodes-base.manualTrigger
• Coden8n-nodes-base.code
• Ifn8n-nodes-base.if
• HTTP Requestn8n-nodes-base.httpRequest
• Gmailn8n-nodes-base.gmail

From the author

Quick overview This workflow monitors a Gmail inbox for new unread messages, classifies them with OpenAI (or keyword rules), searches a Pinecone knowledge base for relevant help content, and either replies in the original Gmail thread or escalates the case to…

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