Change your primary domain

When you sign up for a Google Apps account, you provide an Internet domain name that becomes the primary domain associated with your Google Apps account. You and your users get account names and email addresses at this domain and you can host your website, built in Google Sites if you like, at this domain.

Do I really need a new primary domain? Changing your primary domain isn't always necessary—and it's an involved process that requires some set up. Depending on how you want to use the domain, you might be able to simply add it as a domain or domain alias rather than change your primary domain.

We just want email addresses at the new domain

If you just want your current users to be able to send mail using an address at the new domain, add it as a domain alias and leave your primary domain as is. Users still have to sign in to their services using their account name at the old domain. But they can send and receive mail using an address at the new domain (as well as from the old domain). For details, see Give users an address at another domain.

We also want account names at the new domain

To change your users' account names to the new domain, add the domain as a separate domain. Then move users from their current domain to the new domain. After that, users can sign in to their services using an account name at the new domain. They get an email address at the new domain (and no longer have their old email address). They can otherwise use the new account name just like they did their old one.

Google Play Developer accounts? If a Google Play Developer account is associated with a user account name you want to change to use a new domain, note that the Developer account will be orphaned after making the change. To maintain access to the apps in the previous Google Play Developer account, you need to create a new Google Play Developer account using your new user account name and request an applications transfer for apps in the previous account.

To get started, see Add users from another domain.

We want new web addresses

The easiest way to create web addresses at the new domain, such as mail.newdomain.com, or to host your business website built in Google Sites at the new domain, (such as www.newdomain.com) is to add a secondary domain then Customize a Google Apps service address.

We really want a new primary domain

You can swap the new domain with your primary domain using the Directory API. Before you do, check out the issues you need to consider before you change your primary domain.

Using a mygbiz.com trial domain? If you signed up for a trial domain and want to convert it to a custom domain you own, you can do that without having to create a new account. For details, see Convert a trial domain to a custom domain.

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