Gmail Automation: Draft Replies for Important Emails w/ Groq

Draft smart replies in Gmail—automatically

This n8n workflow watches your Gmail every minute, summarizes key details from important emails, and uses Groq (via a LangChain email assistant) to draft a suggested response—saved directly as a Gmail draft.

What this workflow does

Designed for n8n users who want faster email handling without sacrificing control, the workflow:

• Polls Gmail every minute for new messages.
• Extracts structured fields from each email, including the subject, sender, and snippet text.
• Passes those details to a LangChain email assistant that decides whether to ignore automation-related messages or to draft a reply for important emails (for example, YouTube collaborations or project inquiries).
• Uses Groq to generate the proposed reply content (including an AI-generated subject and message).
• Creates a Gmail draft with the AI-generated response so you can review and approve before sending.

Use cases

• Drafting responses to collaboration requests (e.g., creators and YouTube partners).
• Handling project-related emails faster by generating a clear first reply draft.
• Reducing manual triage by automatically ignoring low-signal or automation-related messages.
• Keeping message context by using the sender, subject, and snippet to generate a relevant draft.

Technical details

• Gmail Trigger: checks for new emails on an every-minute schedule.
• Data preparation: uses nodes like set (and a Sticky Note for workflow clarity).
• LangChain Email Assistant: via n8nn8n-nodes-langchainagent to decide whether to draft.
• Groq LLM: via n8nn8n-nodes-langchainlm chat groq to generate the reply text.
• Gmail draft action: saves the AI response as a Gmail draft (optionally switch to sending emails).

Setup requirements

• Groq API Key
• Google Account with Gmail OAuth2 for both the trigger and draft action
• Internet access