Using Custom Email Aliases in Azure Communication Services
If you’ve started experimenting with Azure Communication Services (ACS) Email, you’ve probably noticed a small but annoying limitation in the Azure Portal:
by default, you can only send emails from the DoNotReply@yourdomain.com address.
But what if you want to send newsletters from newsletter@yourdomain.com, or customer notifications from support@yourdomain.com?
Unfortunately, the Azure Portal doesn’t (yet) allow you to configure additional sender aliases.
The Hidden CLI Command
Luckily, this is where the Azure CLI comes to the rescue.
You can create new sender usernames (aliases) directly via the CLI using the following command:

