Do you encounter the error, This alias cannot be added to your account, Choose a different alias? You are not alone. Many other users are taking to forums and complaining about the issue. And it ...

Microsoft is adding support for sending emails via alias email addresses (also known as aliases or proxy addresses) from the Outlook for Windows email client. "Send email from a proxy email address or ...

How to use aliases in Exchange Online so customers don’t know your real email address Your email has been sent It seems odd that Outlook and Exchange used to make it hard to work with more than one ...