Technical Requirements for empower® Mails Online

Required Permissions: IT Admin 

To use empower® Mails Online, your device and software setup needs to fulfill certain requirements.

Infrastructural Requirements

For empower® Mails Online, only the New Outlook Client for Windows is supported.

In addition, WebView2 needs to be installed. For Windows 11, WebView2 is installed by default.

To use empower® Mails Online, your setup should fulfill the following requirements:

  • Windows 11 + Office Version: Microsoft 365 Version >= 16.0.13530.20424

  • Perpetual versions of Office on Windows

    • Windows 11 + Office 2021* + Retail & Volume-Licensed

  • A default browser of one of the supported browsers

    • Google Chrome

    • Microsoft Edge

    • Safari

  • New Outlook Client

Important

*End of life as of October 2026.

As of October 2026, empower does no longer support this Office version. Please ensure that you switch to a supported version in time.

For further information from Microsoft, see End of support for Office 2021.

Note

For macOS devices, only the browser requirements are relevant.

In general, empower® always supports the newest macOS version and the respective previous macOS version.

Note

If you also have empower® Users who access empower® via a Windows access on a Mac, inform your Onboarding Specialist or Customer Success Manager.

Compatibility of Office Online & Office Desktop Applications

The following table provides an overview of the compatibility of the Office Online applications and empower® Mails Online:

Device Type 

Platform 

Device 

Operating System Version 

Browser 

Desktop

Windows

-

Windows (latest)

Edge

Desktop

Windows

-

Windows (latest)

Chrome

Desktop

macOS

-

macOS (latest)

Safari

Tablet

iPadOS

iPad

iPadOS (latest)

Safari

Mobile Phone

iOS

iPhone

iOS (latest)

(System Browser)

Mobile Phone

Android

Google Pixel

Android (latest)

(System Browser)

Note

If you are unsure if the Windows channel you use to install Windows on your users' devices is compatible with empower® Mails Online, contact empower® Support.

The following table provides an overview of the compatibility of the Office desktop applications and empower® Mails Online:

Device Type 

Platform 

Operating System Version 

Office Version 

Desktop

Windows

Windows (latest)

Microsoft 365 >= 16.0.13628

(WebView2 required)

Desktop

Windows

Windows (latest)

Office 2021 (Perpetual, Retail & Volume-Licensed)

(WebView2 required)

Desktop

macOS

macOS (latest)

Microsoft 365 (any version)

(Safari with WKWebView)

Compatibility of Browsers & Outlook Clients

The following browsers are supported for empower® Mails Online:

  • macOS: Safari

  • Windows: Google Chrome and Microsoft Edge

Important

Always use the latest version of your browser and install updates regularly.

The following Outlook clients are supported for empower® Mails Online (for using Mails in desktop app):

  • macOS: New Outlook Client from Version 16.38.506

  • Windows: New Outlook Client (Classic Client not supported)

Note

To ensure smooth parallel operation between empower® for Outlook and empower® Mails Online, empower® for Outlook should not be used with the New Outlook Client.

If you have both the Classic Outlook Client and the New Outlook Client installed on your company's devices, ensure to adjust your company setting before deploying empower® Mails Online in your company.

Requirements for Your empower® Environment

For empower® Mails Online to work in your empower® Environment the setup must fulfill the following requirements:

  • empower® Backend version 9.4 or higher

  • empower® Client version 9.3 or higher

  • empower® Web Add-ins already implemented

  • Usage of fixed fonts and font colors in signature templates instead of theme fonts and theme colors

Important

If you are not on the required backend and client versions yet and/or have not yet implemented the empower® Web Add-ins, contact your Onboarding Specialist or Customer Success Manager to plan an update of your empower® Environment.

For further information regarding the empower® Web Add-ins, refer to our empower® Web Components manual.

Requirements for empower® Users

For empower® Mails Online to work for all empower® Users, the setup must fulfill the following requirements:

  • There is at least one existing signature template in the empower® Library.

  • Users have read permissions to at least one company which contains at least one location.

In addition, empower® Administrators who are responsible for the signature template management and company management need access to an installation of empower® for Outlook in the desktop application.

Note

For further information regarding the installation of empower® as a desktop application, see Installer Guide – empower® Suite >= 9.7.

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