We can enable the feature by setting the SendFromAliasEnabled to True in the organization config: # Connect to Exchange OnlineĬonnect-ExchangeOnline -UserPrincipalName Make sure you have the latest Exchange Online PowerShell module installed in PowerShell. The send from alias option is turned off by default, so if you want to use this feature you will need to enable it in Exchange Online with PowerShell. The recipient will see only your alias and not your primary email address. When you use an alias to send an email from it will be preserved in the From and Reply to field for the recipient. You can configure and test it, if it doesn’t work, just try it again in a week or two. This means that it might not work yet for your tenant. The roll out of this feature has been shifted to Jun 2021.
But I have tested both and it seems to work in Outlook Online as well. This new feature should become available for Outlook on Windows this month and for Outlook Online later this year according to the roadmap. The feature has not been announced yet, but it’s already documented in the service description and seems to work fine. A long-requested feature to send emails from an alias in Office 365 seems to be finally released.
