Add another email alias for a user

This article is for Microsoft 365 administrators who have business subscriptions. It's not for home users.

A primary email address in Microsoft 365 is usually the email address a user was assigned when their account was created. When the user sends email to someone else, their primary email address is what typically appears in the From field in email apps. They can also have more than one email address associated with their Microsoft 365 for business account. These additional addresses are called aliases.

For example, let's say Jenna has the email address jenna@contosoco.com, but she also wants to receive email at jen@contosoco.com because some people refer to her by that name. You can create aliases for her so that both email addresses go to Jenna's inbox.

You can create up to 400 aliases for a user. No additional fees or licenses are required.

Tip

If you want multiple people to manage email sent to a single email address like info@NodPublishers.com or sales@NodPublishers.com, create a shared mailbox. To learn more, see Create a shared mailbox.

Add email aliases to a user

You must have Global Admin rights to add email aliases to a user.

  1. In the admin center, go to the Users > Active users page.

  2. On the Active Users page, select the user > Manage username and email. You won't see this option if the person doesn't have a license assigned to them.

  3. Select + Add an alias and enter a new alias for the user.

    Important

    If you get the error message "A parameter cannot be found that matches parameter name 'EmailAddresses," it means that it's taking a bit longer to finish setting up your tenant, or your custom domain if you recently added one. The setup process can take up to 4 hours to complete. Wait a while so the set up process has time to finish, and then try again. If the problem persists, call Support and they will do a full sync for you.

    Important

    If you purchased your subscription from GoDaddy or another Partner, to set the new alias as the primary, you must go to the GoDaddy/partner management console.

    Tip

    The email alias must end with a domain from the drop-down list. To add another domain name to the list, see Add a domain to Microsoft 365.

  4. When you're done, choose Save changes.

  5. Wait 24 hours for the new aliases to populate throughout Microsoft 365.

    The user will now have a primary address and an alias. For example, all mail sent to Eliza Hoffman's primary address, Eliza@NodPublishers.com, and her alias, Sales@NodPublishers.com, will go to Eliza's Inbox.

  6. When the user replies, the From address will depend on her Outlook client. Outlook on the web will use the alias at which the email was received (we'll call this the ping-pong principle). Outlook desktop will use her primary email alias. For example, let's say a message is sent to Sales@NodPublishers.com, and it arrives in Eliza's inbox. When Eliza replies to the message using Outlook desktop, her primary email address will appear as Eliza@NodPublishers.com, not Sales@NodPublishers.com.

Did you get "A parameter cannot be found that matches parameter name EmailAddresses"?

If you get the error message "A parameter cannot be found that matches parameter name EmailAddresses" it means that it's taking a bit longer to finish setting up your tenant, or your custom domain if you recently added one. The setup process can take up to 4 hours to complete. Wait a while so the set up process has time to finish, and then try again. If the problem persists, call Support and they will do a full sync for you.

Did you purchase your subscription from GoDaddy or another Partner?

If you purchased your subscription from GoDaddy or another Partner, to set the new alias as the primary, you must go to the GoDaddy/partner management console.

Sending email from the proxy address easily

A new feature is rolling out in July 2021 that allows users to send from their aliases easily when using Outlook on the web. When the feature rolls out to a tenancy where the tenant admin uses the Set-OrganizationConfig -SendFromAliasEnabled $true cmdlet, users within the tenancy will get access to a list of checkboxes where each entry corresponds to an alias in their Outlook settings. Selecting an alias will make it appear in the From dropdown in the Compose form.

Send email from a different address (article)

Change a user name and email address (article)

Configure email forwarding in Microsoft 365 (article)