Automatically Label Gmail Emails with GPT Classification

This n8n workflow automates email management by polling your Gmail inbox at set intervals (default: every minute) for new messages. It extracts email content and sends it to OpenAI's GPT model with a custom prompt to classify each email into one of four categories: High Priority (urgent executive/client emails), Promotion (marketing/sales), Finance/Billing (invoices/payments), or Customer Support (help requests). Based on the classification, it applies the corresponding pre-created Gmail label.

Benefits include significant time savings by eliminating manual sorting, improved prioritization of critical communications, enhanced searchability with labels, and reduced inbox overwhelm. It's scalable for high-volume inboxes and customizable for additional categories or refined prompts.

Ideal use cases: Busy professionals, executives, university admins handling student inquiries/promotions, sales teams filtering leads, or finance teams tracking billing. Perfect for education sectors managing faculty emails, event invites, or support tickets.

Setup is straightforward: Create Gmail labels, add OAuth2/OpenAI credentials in n8n, update label IDs in nodes, tweak classification prompts, and activate. Requires minimal coding knowledge.