Microsoft’s new Outlook for Windows is now generally available, and it will replace the existing inbox Mail & Calendar app on Windows 11, version 23H2. But before it does so, the company wants to ensure necessary features of the Mail and Calendar app, like support for iCloud and other third-party accounts, are included in the new Outlook. Besides, the company is actively developing new features like a new RSVP option from scratch to help you better manage meeting commitments.