Project Monarch is a unified email experience through Outlook, it will gather the various versions of the services from across platforms into a single app. For example, it will replace the Win32 and UWP apps on Windows 10, Outlook Web Access, and the macOS version. It will also be hosted as Outlook for Web on browsers. With this single version of One Outlook, Microsoft’s Mail and Calendar apps will look and function the same across desktop platforms. From leaked images and information, it is thought One Outlook will heavily borrow its design and functionality from Outlook for the Web.

Coming This Year

Microsoft is then planning a release to the Slow Channel in the summer. It seems the company is positioning Project Monarch for a full launch in the autumn, likely alongside the first major update for Windows 11 (Windows 11 22H2 Sun Valley 2). While the release will coincide with Windows 11 22H2, it will also be available on Windows 10 and other desktop platforms. The report points out Microsoft is unlikely to force users to migrate to the new experience, at least not this year. That will almost certainly change in the future, but at first users will have the choice between One Outlook and the legacy experience.

Microsoft S One Outlook Heading for Spring Launch - 10

title: “Microsoft S One Outlook Heading For Spring Launch” ShowToc: true date: “2022-12-22” author: “Gary Woodward”


Project Monarch is a unified email experience through Outlook, it will gather the various versions of the services from across platforms into a single app. For example, it will replace the Win32 and UWP apps on Windows 10, Outlook Web Access, and the macOS version. It will also be hosted as Outlook for Web on browsers. With this single version of One Outlook, Microsoft’s Mail and Calendar apps will look and function the same across desktop platforms. From leaked images and information, it is thought One Outlook will heavily borrow its design and functionality from Outlook for the Web.

Coming This Year

Microsoft is then planning a release to the Slow Channel in the summer. It seems the company is positioning Project Monarch for a full launch in the autumn, likely alongside the first major update for Windows 11 (Windows 11 22H2 Sun Valley 2). While the release will coincide with Windows 11 22H2, it will also be available on Windows 10 and other desktop platforms. The report points out Microsoft is unlikely to force users to migrate to the new experience, at least not this year. That will almost certainly change in the future, but at first users will have the choice between One Outlook and the legacy experience.

Microsoft S One Outlook Heading for Spring Launch - 48