For users who prefer third-party clients like Microsoft Outlook, Mozilla Thunderbird, or Apple Mail, the Bridge app (available for paid plans) enables IMAP/SMTP encryption locally. Comparison of Free vs. Paid Plans
A dedicated desktop experience is available for Windows, macOS, and Linux. Windows: Download for Windows (Beta). macOS: Download for macOS. protonmail download
To ensure security, always download the latest version of Proton Mail from the official download page or authorized app stores. For users who prefer third-party clients like Microsoft