If you’re already in Windows 11 using a Microsoft account, you can switch to a local account at any point. Go to Settings and then Accounts. Select the setting for Your Info.

To create an alias in Outlook using your email, sign into your account. Then click on the gear icon to open Settings . Next, select View all Outlook settings > Choose Mail > Sync email .

Next, you'll need to create what Microsoft calls a Work Or School Account (with your custom Microsoft 365 domain) rather than using a free Microsoft account.

So if you create a Microsoft account make sure to uninstall OneDrive bloatware. cafejose - 2 months ago @jipjip, maybe one could simply not use OneDrive, and instead use a different cloud storage ...