How do I add a domain as an alias to my Google Workspace account?

1. In your Google Admin console
2. Go to Domains > Manage Domains.
3. In Manage domains, click Add a domain alias.
   
   Note: If you have the legacy free edition of G Suite, the "Add a domain" option isn't available.
   
4. Enter the name of the domain.
   If you recently removed the domain from your Google Workspace account, you need to wait up to 24 hours before adding the domain. 
5. Click Continue and verify domain ownership
   Follow the instructions to verify that you own this domain. For help, contact your domain host or support@whogohost.com.
6. After your domain is verified, set up email. Point your mouse cursor near the domain and click Set up Google MX records.
   
7. Update the domain's MX records to set up Gmail for your domain alias.
8. Click I have completed these steps.
   It might take from 48 to 72 hours for your domain to be verified and email set up, depending on your domain host.
   For large organizations: It can take more than 24 hours after verification for all users and groups to receive their alias email addresses.

Click here to learn more