Smart email auto-responder template using AI
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 11 nodes and runs on Gmail events. Along the way it connects Gmail, Google Gemini Chat Model and Brevo.
How it runs
Trigger: On Gmail events.
- Emails from Existing Contracts (If): checks a condition and branches into true / false
- Reply (If): checks a condition and branches into true / false
- Text Classifier: classifies text into categories with AI, with model: Google Gemini Chat Model
- GuestPost Inquiry (Send Email): sends an email over SMTP
- Youtube Video Inquiry (Send Email): sends an email over SMTP
- Send Email: sends an email over SMTP
- Mark as Read (Gmail): mark as read
- Apply Label (Gmail): add labels
- Create Contact in Brevo (Brevo): create or update (contact)
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 (7)
- Gmail Trigger
n8n-nodes-base.gmailTrigger - Text Classifier
@n8n/n8n-nodes-langchain.textClassifier - Google Gemini Chat Model
@n8n/n8n-nodes-langchain.lmChatGoogleGemini - Send Email
n8n-nodes-base.emailSend - Gmail
n8n-nodes-base.gmail - Brevo
n8n-nodes-base.sendInBlue - If
n8n-nodes-base.if
From the author
Smart Email Auto-Responder with AI Classification Automatically Categorize and Reply to Emails using LangChain + Google Gemini + Gmail + SMTP + Brevo This n8n workflow is designed to intelligently manage incoming emails and automatically send personalized…