ElectronMail

ElectronMail is an unofficial desktop client for ProtonMail built with Electron, TypeScript, and Angular. It runs natively on Linux, macOS, and Windows, offering a desktop‑oriented experience that supplements the official web interface. The project is open source and provides reproducible builds, with installation packages distributed through various package managers and direct releases.

Key capabilities include full‑text search that indexes email bodies, JavaScript‑based filtering of messages without a preset limit, and offline access to email content (attachments remain online). These features aim to give users more control over their mailbox and a richer interaction model than the browser‑only client.

The software targets ProtonMail users who prefer a standalone application and need advanced search or custom filtering while retaining the security model of the service. It is maintained by a community of contributors and is released under an open‑source license.