eM Client for Linux

eM Client can be run on Linux using Wine. This project provides a Lutris installer that handles prefix configuration, font setup, and Wine registry tweaks automatically. A manual Bottles install guide is also included below.

eM Client does not officially support Linux. You can vote for official support at emclient.sleekplan.app.

Lutris Installation

Requirements

• Lutris
• A working Wine runner (see Troubleshooting below if the install fails)

Install

Run the following command to launch the installer:

lutris -i https://raw.githubusercontent.com/BenJamesAndo/Linux-eMClient/refs/heads/main/em-client-lutris-installer.yaml

If Lutris is installed as a Flatpak:

flatpak run net.lutris.Lutris -i https://raw.githubusercontent.com/BenJamesAndo/Linux-eMClient/refs/heads/main/em-client-lutris-installer.yaml

What the installer does

• Optionally downloads the UMU-Proton-9.0-4e runner into your Lutris runners directory
• Creates a 64-bit Wine prefix configured for Windows 8.1
• Installs core fonts and the full Segoe UI font family
• Configures file associations so email attachments open natively on Linux
• Downloads and runs the latest eM Client installer

After installation

Set the Wine runner to UMU-Proton-9.0-4e for best compatibility:

1. Right-click eM Client in Lutris and select Configure
2. Go to Runner options
3. Set Wine version to UMU-Proton-9.0-4e
4. Click Save

Troubleshooting

The installer fails with a GE-Proton traceback mentioning protonfixes

To work around this:

1. Open Lutris and go to Preferences > Runners > Wine
2. Set the default Wine version to System Wine
3. Re-run the installer

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Bottles Installation

Requirements

• Bottles
• UMU-Proton-9.0-4e runner
• Segoe UI fonts for Linux
• ProtonPlus (optional, useful for locating the runners directory)

Steps

1. Place the UMU-Proton runner in the Bottles runners directory, for example: ~/.local/share/bottles/runners/UMU-Proton-9.0-4e

2. Create a new Bottle and select UMU-Proton-9.0-4e as the runner.

3. Under Settings, set Windows Version to Windows 8.1.

4. Open the Registry Editor and import regedit-import.reg. Place the file in your Documents folder to find it easily when browsing for it.

5. Copy the Segoe UI fonts into the prefix font directory, for example: ~/.local/share/bottles/bottles/eMClient/drive_c/windows/Fonts

6. Under Dependencies, install allfonts.

7. Download the eM Client installer from https://www.emclient.com/dist/latest/setup.msi and install it inside the bottle.

Runners Compatibility

Runner	Notification Text	License Activation	Notes
UMU-Proton	✅	✅	Unstable on Win Version 10/11; stable on Win 8.1 and below
Other Proton Runners	❌	✅	License works, but no notification text
Wine-GE-Proton8-26	✅	❌	Notifications work, but license activation fails
WINE 11.3	❌	❌	Neither license nor notification text displays
CrossOver	❌	❌	Neither license nor notification text displays

Screenshot