If you want to set up two-factor authentication for Gmail using the desktop version of Outlook, it is similar to adding a regular account.

Set Up Gmail in Apple Mail To add a new account in Apple Mail: Head to Mail > Preferences in the menu bar and go to the Accounts tab. Hit the plus sign in the bottom left corner to add a new account.

Windows 10 includes new versions of the basic and free Mail and Calendar apps. Here's a walkthrough of how you set them up.