Microsoft will start automatically installing its new Outlook email app on Windows 10 devices. It's already pre-installed on most Windows 11 PCs and rolled out to some existing Windows 11 systems.

Designed to replace the current Mail and Calendar apps, the new Outlook can only be removed after it's been installed.

The new Outlook will be automatically delivered to all computers running Windows 10. It is the same version of the program already installed in Windows 11, provided users continually download all updates.

Microsoft will force install the new Outlook email client on Windows 10 systems starting with next month's security update.

Microsoft will automatically install its new Outlook client on Windows 10 PCs with next month’s Patch Tuesday update.