Smart email assistant: automate customer support with AI & Supabase
Needs changesNeeds changes. This template uses 1 thing(s) that n8n 3.0 removes: AI Agent v1 (old agent modes). 1 breaking item(s) found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 20 nodes and runs on Gmail events (plus 2 other triggers). Along the way it connects Gmail, OpenAI, OpenAI Chat Model and Vector Store Question Answer and 4 more.
How it runs
Trigger: On Gmail events (plus 2 other triggers).
- AI Email Classifier (OpenAI): uses OpenAI
- Set File ID (Edit Fields (Set)): sets or maps fields
- Route Email (Switch): routes items into branches
- Delete Old Doc Rows (Supabase): uses Supabase
- AI Response Generator (AI Agent): runs an AI agent, with model: OpenAI Chat Model; 2 tools (Create Draft, Vector Store Tool)
- Download File (Google Drive): uses Google Drive
- Extract Document Text (Extract from File): extracts data from a file
- Insert into Supabase Vectorstore (Supabase Vector Store): uses the Supabase vector store, with embeddings: Embeddings OpenAI; document loader: Default Data Loader
Services it uses
Before you upgrade to n8n 3.0
1 thing in this workflow is removed in n8n 3.0. Fix it before you upgrade:
- AI Agent v1 (old agent modes) in AI Response Generator (v1.7): replace with Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent.
- Also check Gmail Trigger below v1.4 runs as v1.4 (drafts skipped, max emails per poll).
Rather not rewrite it? Many of these flows can be rebuilt in Make (free plan).
| Removed in 3.0 | Replace with |
|---|---|
| AI Agent v1 (old agent modes) AI Response Generator (v1.7) | Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent. |
Nodes used (16)
- Gmail Trigger
n8n-nodes-base.gmailTrigger - OpenAI
@n8n/n8n-nodes-langchain.openAi - Switch
n8n-nodes-base.switch - AI Agent
@n8n/n8n-nodes-langchain.agent - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Vector Store Question Answer Tool
@n8n/n8n-nodes-langchain.toolVectorStore - Embeddings OpenAI
@n8n/n8n-nodes-langchain.embeddingsOpenAi - Supabase Vector Store
@n8n/n8n-nodes-langchain.vectorStoreSupabase - Default Data Loader
@n8n/n8n-nodes-langchain.documentDefaultDataLoader - Google Drive
n8n-nodes-base.googleDrive - Google Drive Trigger
n8n-nodes-base.googleDriveTrigger - Extract from File
n8n-nodes-base.extractFromFile - Recursive Character Text Splitter
@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter - Supabase
n8n-nodes-base.supabase - Edit Fields (Set)
n8n-nodes-base.set - Gmail Tool
n8n-nodes-base.gmailTool
From the author
Intelligent Email Support System with Vector Database Overview This n8n workflow automates email support using AI and vector database technology to provide smart, context-aware responses. It seamlessly integrates email automation and document management,…