Aerion is an open source email client designed for Linux, macOS, and Windows. Built with Wails and Svelte, it offers a lightweight, efficient, and privacy-focused experience, connecting directly to IMAP/SMTP providers without relying on Electron or system services.
Aerion sits in PulseGate's Email clients category. It focuses on providing a fast, privacy-focused, and resource-efficient email client for desktop users across platforms. Aerion is an open-source project aimed at desktop email users seeking open source alternatives. The project is open source (Apache-2.0). The product ships for the web, Linux, macOS, and Windows.
Aerion first shipped in 2026. The project is developed in the open on GitHub with 725 stars and 31 commits in the last 90 days. Across PulseGate's embedding index, Aerion has few near neighbours, marking it as relatively distinct. Among its 6 catalogued features are lightweight client, IMAP/SMTP support, and privacy focused.
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