I also found a way to set up outlook.com aliases in a way that you can send emails using aliases directly via Microsoft Outlook desktop. This article discusses email settings for Outlook.com that ...

If you are using the classic Outlook client, you can add a shared mailbox to it by following these steps: If the Add option is grayed out, you probably have multiple Exchange accounts set up in ...

When prompted, enter your password again. Close the Mail settings window and open Outlook. If the shared mailbox is linked to your primary email account (such as through an Exchange or Office 365 ...