AI-Powered Auto-Labeling for Incoming Gmail Messages

This n8n workflow triggers on new Gmail messages, downloads their content, and uses an OpenAI-powered AI chain to classify emails based on predefined criteria. It then retrieves existing Gmail labels, matches them to AI outputs, and applies the appropriate ones automatically. Labels are customizable, with defaults for partnership opportunities, service inquiries, and non-actionable notifications.

The workflow polls Gmail every minute (configurable) for efficiency without constant API calls. AI prompts and JSON schemas ensure precise classification, making it adaptable to various industries. It handles aggregation of label IDs seamlessly, applying multiple labels if needed.

Benefits include massive time savings on email triage, reduced manual sorting, and improved response prioritization—ideal for busy professionals in travel, hospitality, or review management. Use cases: Auto-categorize customer reviews, partnership pitches, or alerts; integrate into CRM pipelines; scale for high-volume inboxes.

Setup is straightforward: Connect Gmail and OpenAI credentials, create matching labels in Gmail, tweak AI prompts and schemas, and adjust polling as needed. Perfect for achieving inbox zero with intelligent automation.