Geunwoo ParkGeunwoo
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Product2025

SuMail Email Summarization Extension

Chrome extension that summarizes long emails with OpenAI for faster inbox triage.

SuMail is a Chrome extension I helped lead at UW-Madison that summarizes long emails with OpenAI's GPT-4.1-mini. The project emphasized fast in-context summarization, secure browser messaging, and a UI that felt lightweight enough for everyday use.

Role
Project Lead
Team
5-member development team (KCU organization, UW-Madison)
Duration
Sep 2025 - Present
Tools
JavaScriptHTML/CSSManifest V3OpenAI API
Links
GitHub

Product Goal

The extension was designed around a simple use case: take a long email and return a usable summary without forcing the user into a separate app or a heavy workflow.

Engineering Work

I helped lead the build across the full stack of the extension, including OpenAI API integration for summarization, background-to-content script messaging, Manifest V3 constraints, and a lightweight HTML/CSS and JavaScript UI. Because browser products can feel fragile quickly, a lot of the work centered on keeping the system reliable and responsive.

Team Role

I led a five-member development team, which meant balancing feature direction, code review, and implementation details rather than only building isolated pieces. That made the project a useful mix of product thinking and technical execution.