Automate Email Triage with GPT-4.1-mini Classification and Gmail Auto-Replies

How it works:

• Detects new unread Gmail messages
• Extracts sender name for personalized replies
• Classifies the email into one of four categories
• Applies the correct Gmail label and either sends an auto-reply, creates a draft, or logs the contact in Google Sheets

Setup steps:

• Takes about 5–10 minutes to connect accounts and set labels
• Connect Gmail, OpenAI, and optional Google Sheets in n8n
• Add label IDs, Google Sheet ID, sheet name, and phone number in Set – Config
• Create four Gmail labels for the categories
• Keep full setup instructions in the sticky notes inside the workflow