How to use Custom User to send emails from Azure Communication Services?

Question

I have successfully created resources in Azure for Azure Communication Services to send emails. My domain has been fully authenticated for over 12 hours, and I have connected the domain to send emails. The setup is successful, and I can send emails using the default customer user (donotreply@). However, I am unable to add any new users. I need to send emails from my custom email address (e.g., myemail@domain.com). How can I add users to enable sending emails from my custom email address?

Answer 1

Hi @Polamreddy Lakshmi Narayana ,
Welcome to the Microsoft Q&A Platform!
To send emails from a custom email address using Azure Communication Services (ACS).
Verify the Domain

Ensure your domain (e.g., domain.com) is verified in ACS.

Go to Azure Portal > Azure Communication Services > Email > Senders.

Click + Add sender and enter your custom email (e.g., myemail@domain.com).

Verify the custom email by confirming the verification email sent to it.

Ensure your custom email (myemail@domain.com) exists and is verified in Azure Active Directory (Azure AD).

Use ACS Identity SDK or SAS token to authenticate the custom user for sending emails.

Use the ACS SDK (e.g., .NET) to send an email from the custom address

var client = new EmailClient("<your-connection-string>");
var senderAddress = "myemail@domain.com";  // Custom sender email
var emailMessage = new EmailMessage(senderAddress, "recipient@domain.com", "Subject", "Body");
await client.SendAsync(emailMessage);

Ensure domain is verified and custom sender is added correctly.

Check authentication using SAS token or Azure AD credentials.
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