Download the desktop app

Before you download

• The desktop app needs a Pro or Advanced account. Trial and Free accounts can't sign in to it — the web app is always available to everyone.
• On Linux, pick the package your distribution uses — .deb for Debian, Ubuntu and Mint, .rpm for Fedora, RHEL and openSUSE. The AppImage runs anywhere else without installing. Most machines are 64-bit (x86_64); choose ARM only if you know yours is, such as a Raspberry Pi or an ARM virtual machine. uname -m tells you.
• On Windows, the installer is signed by Confidesk Limited — Windows verifies the publisher when it runs. Most machines are 64-bit; pick ARM only if you know yours is, such as a Surface Pro X or a Copilot+ PC.
• On a Mac, this build runs on Apple Silicon only. If your Mac has an Intel processor it won't run — use Confidesk in your browser instead. Not sure? Apple menu → About This Mac: if it says Apple M1 (or M2, M3, M4), you're on Apple Silicon.

Installing

macOS — open the downloaded .dmg and drag Confidesk to your Applications folder.

Debian, Ubuntu, Mint — sudo apt install ./Confidesk-R2026090918-amd64.deb (or double-click the file). Installs as confidesk and appears in your applications menu.

Fedora, RHEL, openSUSE — sudo dnf install ./Confidesk-R2026090918-x86_64.rpm.

Windows — run the downloaded .exe.

AppImage — no installation: chmod +x the file and run it. On Ubuntu 22.04 and later you may need sudo apt install libfuse2 first, which AppImages rely on.

All Linux downloads

All Windows downloads

SHA-256 — x64 a90b8125688b02c411e28e572bdb42bbc84128573822f91a2185e97998146520, ARM64 a915ced7f2dc9ff380f0c24c969cd7a60bc69992919a997c8baf31efe50abfe8. Both are signed by Confidesk Limited.

What the desktop app adds

• Search your mail — full text, across everything stored on your device. This can't exist in the browser: the index would have to be written to disk, leaving a decrypted copy of your mailbox behind on the machine.
• Works offline — read and write with no connection; it syncs when you're back.
• Your other mailboxes — connect any IMAP or POP account alongside your Confidesk mail.