Skim is a free, open-source email client for Windows built with a native Rust core and WebView2 UI. It offers a minimalist interface focused only on essential email functions, local SQLite storage for offline use, instant search, and a built-in AI copilot that uses your own API key. The ~5MB installer requires no admin rights and avoids the complexity and subscriptions of mainstream email applications.
Skim is a Productivity & Work product. It focuses on managing email without the bloat, distractions, and subscriptions of traditional clients. It is built as a consumer product for windows users seeking a lightweight email client. Skim is open source under the MIT license. Skim is available on the web and Windows.
Behind Skim is Skim, and the product first shipped in 2026. Development happens publicly on GitHub with 18 stars and 167 commits in the last 90 days. Key capabilities include AI Copilot, offline-first, and Instant Search.
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Show HN: Skim – a minimalist open-source email client for Windows (MIT) verified by the PulseGate indexer
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