Gmail Auto-Reply Generator with ChatGPT

This workflow contains community nodes that are only compatible with the self-hosted version of n8n.

Gmail Auto-Reply with AI

Automatically draft smart email replies using ChatGPT. Reclaim your time typing the same responses again and again.

Who is this for?

If you're overwhelmed with emails and constantly repeating yourself in replies, this workflow is for you.

Whether you're a freelancer, business owner, or team lead, it saves you time by handling email triage and drafting replies for you.

What does it solve?

This workflow reads your unread Gmail messages and uses AI to:

• Decide whether the email needs a response
• Automatically draft a short, polite reply when appropriate
• Skip spam, newsletters, or irrelevant emails
• Save the AI-generated reply as a Gmail draft (you can edit it before sending)

It takes email fatigue off your plate and keeps your inbox moving.

How it works

1. Trigger on New Email: Watches your Gmail inbox for unread messages.
2. AI Agent Review: Analyzes the content to decide if a reply is needed.
3. OpenAI ChatGPT: Drafts a short, polite reply (under 120 words).
4. Create Gmail Draft: Saves the response as a draft for you to review.
5. Label It: Applies a custom label like Action so you can easily find AI-handled emails.

How to set up?

1. Connect credentials:

   • Gmail (OAuth2)
   • OpenAI (API key)

2. Create the Gmail label:

   • In your Gmail, create a label named Action (case-sensitive).

How to customize this workflow to your needs

• Change the AI prompt: Add company tone, extra context, or different reply rules.
• Label more intelligently: Add conditions or labels for “Newsletter,” “Meeting,” etc.
• Adjust frequency: Change how often the Gmail Trigger polls your inbox.
• Add manual review: Route drafts to a team member before sending.