We can already test the new Outlook application for Windows

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Project Monarch, also known as One Outlook, has taken two years to see the light. Since Zac Bowden first reported its existence, Microsoft has been quietly working on this project and now it can finally reap the rewards of its labor.

One Outlook refers to Microsoft’s strategy to unify your email experience across all platforms thanks to the web. In this way, One Outlook could lead to various web applications for each operating system.

During this time, Microsoft has been focusing its efforts on modernizing Outlook Web and improving its performance so that these applications are competent. From today we can already test with personal accounts «Outlook for Windows»

Outlook for Windows is far from being able to replace the native Mail application

As you can see, the application shows an interface that is practically identical to the Outlook web page, except for the ribbon at the top and some other small details.

This app will one day replace the native Windows 10 and Windows 11 Mail application, but it is still a long way from being able to do so. Among its main shortcomings we can highlight:

  • No notifications when closed.
  • It does not have offline support.
  • There is no automatic theme based on the Windows theme.
  • It does not have multi-account support.

As a positive note we can highlight, first of all and surprisingly, the performance of the application. I expected that, being a web app, the launch speed and performance within the app itself would feel very slow compared to the native (UWP) Windows app. It is not the case.

Both the opening of the app and the actions within it work surprisingly well. Here you can see the great work that Microsoft has been doing during all this type rewriting the client.

Outlook for Windows resource consumption is correct. As we can see in the screenshot, the app’s RAM consumption with an email open exceeds 350MB, an acceptable figure for a web application, although far from the 60-70MB of the Windows and Windows 11 UWP application.

Outlook for Windows resource consumption
Image: Microsofters


In short, we believe that this first approach to what aspires to be the native Windows Mail application in the not too distant future has its lights and shadows. Although its performance is acceptable and aesthetically complies (without being beautiful), the application still lacks essential functions for a top-of-the-line email client.

We recommend installing it if you are curious and want to follow its development, but you will have to be patient with it. And you, what do you think of all this? Do you think Microsoft is right betting on a web application for this service?