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Draft Gmail replies with OpenAI and OpenRouter for an inbox-zero workflow

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Created by: Zac Nielsen || itszacnielsen

Zac Nielsen

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Last update 3 days ago

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Automatically draft email replies using AI. This workflow monitors your Gmail inbox, filters out automated emails (newsletters, receipts, notifications), and uses AI to create draft responses only for emails that genuinely need your attention.

Who is this for?
Freelancers, consultants, and business owners who want to reduce email response time while maintaining quality responses.

How it works

  1. Gmail Trigger polls your inbox for new emails
  2. AI Classification (OpenRouter) determines if the email needs a human response - automatically filters out newsletters, receipts, system notifications, and marketing emails
  3. Email Draft Agent (OpenAI) generates a contextual draft reply matching your writing style
  4. Gmail saves the draft to your drafts folder
  5. Telegram sends you a notification when drafts are created

Prerequisites

  • Gmail account with OAuth2 access
  • OpenAI API key
  • OpenRouter API key
  • Telegram bot token and chat ID
  • (Optional) Supabase account for vector store

Setup steps

  1. Import the workflow and connect your Gmail OAuth2 credentials
  2. Add your OpenAI and OpenRouter API keys
  3. Create a Telegram bot via BotFather and add your chat ID to the notification nodes
  4. Customise the Email Draft Agent system prompt with your business context and example emails
  5. Test with a few emails before activating