Microsoft introduced a new theme for its New Outlook that resembles Outlook Classic, responding to user preferences for a familiar interface. In August 2026, an optional setting was rolled out for New Outlook on Windows 11 and Windows 10, allowing users to enable a “classic Outlook style” through Settings > General > Appearance. This feature alters the interface to echo Outlook Classic while functioning as a web app. Key redesigns include a dark background title bar, updated navigation bar, and a new Calendar view. The mail folder list has been made more compact, and the ribbon has been updated with familiar design elements. Despite these changes, users still express a desire for a native Outlook app, as the current version operates as a resource-intensive Edge instance.