Skim is a free, open-source (MIT) email client for Windows. ✂️ Minimal on purpose: no calendar, no rules engine, no bloat. Fewer buttons, less cognitive load. ⚡ Native Rust core (Tauri 2): ~5 MB installer, sub-second cold start, instant full-text search. 🔒 Local-first, offline-ready, zero telemetry. ✦ AI on your terms: bring your own Anthropic or OpenRouter key and Skim drafts replies in your voice and answers questions across your whole mailbox.
I built Skim because I wanted a Windows email client that doesn't suck that hard and couldn't find one. Now I wanna share it with you.
Skim is open source and MIT-licensed, free forever. No subscription, no telemetry. Join as a contributor plz! 🙏 https://github.com/nikserg/skim
Skim is small: a native Rust core (Tauri 2, no Electron), a ~5 MB installer, offline-first IMAP sync into local SQLite, instant full-text search, and a keyboard-first UI with a Ctrl+K palette.
✦ The AI part works on your terms: paste your own Anthropic or OpenRouter key to enable AI features:
✍️ it drafts replies in your voice (and can learn from your sent emails)
📥 summarizes your unread mail
🔍 answers questions across your whole mailbox, with cited sources
Pretty basic, huh? Right. That's all I need, and I believe there are people who need the same. Requests go straight from your machine to the provider: no middleman, no markup, no subscription.
Let me share a bit of the philosophy I try to follow while building Skim:
✂️ Minimalism. It's an email client and that's it. No integrations -> no bloat. Cognitive load matters!
🎯 Contextual actions. Skim tries to be the kind of software that thinks FOR you to save your cognitive resources. Buttons show up only when needed, the app always does the most obvious thing, and the defaults should be the best ones.
⚡ Resource efficiency. Skim is built to run in the background 24/7, so it stays as humble as possible and eats as few resources as it can. That's why the installer is under 5 MB 😄
So, with all that said: please, have fun with Skim! I'd love your feedback, especially from folks tired of heavy clients. What would make you switch? What's missing? How could I trick you into contributing? 🤘
About Skim on Product Hunt
“Free, open-source AI email client for Windows”
Skim launched on Product Hunt on July 21st, 2026 and earned 160 upvotes and 48 comments, placing #9 on the daily leaderboard. Skim is a free, open-source (MIT) email client for Windows. ✂️ Minimal on purpose: no calendar, no rules engine, no bloat. Fewer buttons, less cognitive load. ⚡ Native Rust core (Tauri 2): ~5 MB installer, sub-second cold start, instant full-text search. 🔒 Local-first, offline-ready, zero telemetry. ✦ AI on your terms: bring your own Anthropic or OpenRouter key and Skim drafts replies in your voice and answers questions across your whole mailbox.
On the analytics side, Skim competes within Windows, Email, Open Source and GitHub — topics that collectively have 159.4k followers on Product Hunt. The dashboard above tracks how Skim performed against the three products that launched closest to it on the same day.
Who hunted Skim?
Skim was hunted by Nikita Zarubin. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Skim including community comment highlights and product details, visit the product overview.
Nikita Zarubin