Microsoft's New Outlook Takes 10 Times Longer to Handle Email Notifications

Microsoft is forcing users to migrate from Outlook Classic to a web-based New Outlook that handles notifications 10 times slower, exposing fundamental performance limitations of the company's shift away from native applications. This regression in core functionality directly contradicts Microsoft's push for modernization and threatens the viability of its planned 2027 forced migration deadline. The notification delay represents a broader challenge for WebView2-based apps trying to match native Windows software.