Hylki is a fast, GNOME-native email client built in Rust with GTK 4 and libadwaita, offering a three-pane layout, unified inbox, and first-class OAuth support with privacy as a core design principle.
- The app contains no generative AI features and never sends mail to such services, though the majority of its Rust code was written with Claude Code
- Hylki is the successor to two earlier projects (Veem and Vireo) and can install alongside Vireo, automatically migrating accounts, settings, and cached mail on first launch
- The Flatpak is the only recommended install method, as Arch, Debian/Ubuntu, and Snap packages were discontinued after version 1.7.0