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Compatible Web Browsers

For the best user experience, please use a modern and up to date web browser and allow JavaScript and Cookies while visiting Please make sure to regularly update your browser, as this enables you to use the latest encryption methods.

Our recommendations for Linux, Mac, iOS, Windows:

Minimum screen resolution for desktop devices is 1024x768 pixels.

Our recommendation for Android:

Please be advised that the mobile version of the office does not offer all available functionalities. Hence, we recommend the usage of dedicated e-mail clients on Android devices:

As browser for Android-based devices, we recommend:

  • Google Chrome

The German internet security expert Mike Kuketz has more advice, which can be found at this Link: Android Apps: Browsers and E-Mail Client (German). Many of our advanced users follow those recommendations - however, we do not provide support for third-party apps.