AI Gmail Auto-Responder
Never let a high-value email sit unanswered again. This AI-powered Gmail assistant reads every incoming message, instantly decides which ones truly need a reply, and drafts a polished, professional response in the sender's language — saved as a draft in your thread, ready for you to review and send in one click. You stay in control; the AI does the heavy lifting.
COMPLEXITY
Beginner
SETUP TIME
5 minutes
TECHNOLOGIES USED
REQUIREMENTS
- An n8n instance (self-hosted or cloud)
- A Gmail account with OAuth access
- An OpenAI API key
Workflow Preview

How It Works
Inbox Watch
The Gmail trigger polls your inbox every minute for new messages (excluding your own sent mail)
Smart Triage
GPT-4o reads the subject and body, then decides in JSON whether the message needs a reply — marketing and noise are skipped automatically
Reply Routing
Only emails flagged as needing a response move forward; the rest are ignored to save you time and API cost
Draft Generation
GPT-4 Turbo writes a clear, professional reply in the sender's language, with placeholders for anything only you can answer
Draft in Thread
The reply is saved as a draft in the original conversation — review it, hit send when you're ready
Frequently Asked Questions
Does this send emails automatically?
No — it only creates drafts in your Gmail thread. You review each draft and hit send yourself, so you always stay in control of what goes out.
Which AI models does it use?
GPT-4o handles the triage decision (with zero temperature for consistent JSON output) and GPT-4 Turbo writes the reply drafts. Both can be swapped for cheaper models like GPT-4o-mini in the node settings.
Will it reply to marketing emails?
No. The triage prompt explicitly instructs the model that marketing emails don't require a response, so your inbox noise is filtered before it reaches the drafting stage.
What do I need to set up?
Just two credentials in n8n: a Gmail OAuth2 connection and an OpenAI API key. The whole setup takes about 5 minutes.
What is the refund policy?
Due to the digital nature of our products, we cannot offer refunds once purchased. We provide 7 days of implementation support to ensure your success through email. If you encounter any issues, please reach out to us at team@autorithm.net.
One-time payment
Beginner • 5 minutes
What's Included
- Complete n8n workflow (import-ready JSON)
- 5-minute setup guide with screenshots
- Customization notes (tone, language, model choice)
- Draft-only safety design — nothing sends automatically
Instant Access
Secure Payment
7d Support