The new Outlook app will be packaged in an optional download for Windows 10 starting January 28th, but after the February 11th security update, it will be be a forced inclusion. T

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.

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

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