Automated customer support with GPT-4 knowledge base agent for Gmail
Ready for 3.0Ready 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.
What this workflow does
This AI workflow has 16 nodes and runs on Google Drive events (file created) (plus 1 other trigger). Along the way it connects OpenAI Chat Model, Embeddings OpenAI, Pinecone Vector Store and Gmail and 1 more.
How it runs
Trigger: On Google Drive events (file created) (plus 1 other trigger).
- Download file (Google Drive): download
- Text Classifier: classifies text into categories with AI, with model: OpenAI Chat Model
- Pinecone Vector Store: stores documents in the Pinecone vector store, with embeddings: Embeddings OpenAI; document loader: Default Data Loader
- AI Agent: runs an AI agent, with model: OpenAI Chat Model; 1 tool (knowledgebase)
- Add label to message (Gmail): add labels
- Reply to a message (Gmail): reply
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
- Still check Gmail Trigger below v1.4 runs as v1.4 (drafts skipped, max emails per poll) (Gmail Trigger).
Nodes used (12)
- Text Classifier
@n8n/n8n-nodes-langchain.textClassifier - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - AI Agent
@n8n/n8n-nodes-langchain.agent - Embeddings OpenAI
@n8n/n8n-nodes-langchain.embeddingsOpenAi - Pinecone Vector Store
@n8n/n8n-nodes-langchain.vectorStorePinecone - Gmail
n8n-nodes-base.gmail - No Operation, do nothing
n8n-nodes-base.noOp - Google Drive Trigger
n8n-nodes-base.googleDriveTrigger - Google Drive
n8n-nodes-base.googleDrive - Default Data Loader
@n8n/n8n-nodes-langchain.documentDefaultDataLoader - Recursive Character Text Splitter
@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter - Gmail Trigger
n8n-nodes-base.gmailTrigger
From the author
Customer Support AI Agent for Gmail This n8n template demonstrates how to build an AI-powered customer support workflow that automatically handles incoming Gmail messages, classifies them, finds answers from your knowledge base, and sends a personalized…