AI-Powered Auto-Replies to Outlook Emails with OpenAI

This n8n workflow enables Microsoft Outlook users to set up an AI agent that automatically reads incoming emails from selected senders, reasons about the content using OpenAI (e.g., GPT-4o-mini), and generates tailored replies. It filters emails by sender, processes them through a customizable prompt with system instructions and example replies wrapped in <example> tags, then sends a reply or reply-all while preserving the email thread.

Key benefits include massive time savings on repetitive email handling, consistent communication style for shared inboxes or teams, and scalability for high-volume inboxes like sales, HR, or support. By emulating your writing persona, it reduces response times from hours to seconds, minimizes errors, and allows focus on high-value tasks.

Ideal use cases: HR teams replying to employee queries, operations managers handling vendor emails, sales reps auto-responding to leads, or any professional managing repeatable correspondence. Requires Outlook and OpenAI credentials; setup involves filtering senders, configuring the AI prompt with samples, and testing with real emails.

Once active, it monitors your inbox continuously, drafts replies in your Sent or Drafts folder for review if needed, ensuring seamless integration into daily workflows.