Creation of Multiple Domains in G Suite

A name change, a distinctly branded program or company, or an acquisition could cause the necessity to associate multiple domains with G Suite. Organization-wide access to G Suite's collaborative tools can help in streamlining collaboration both within and across domains.

Fortunately, G Suite gives administrators a minimum of three distinct ways to handle multiple domains: As an alias, as a further domain, or as a completely distinct account. The first two domain options let a G Suite administrator add one or more domains within the context of an existing G Suite setup. The third option—a separate G Suite account for a special domain—may also add up in certain circumstances. See the details below as you choose among these three options.

In every case, you'll need G Suite administrator access to the admin console for your domain. You'll also need administrative access to the domain name system DNS settings for each domain. Often, you configure DNS settings at the same service where you registered your domain. For example, Google Domains allow you to register domains and manage DNS details for those domains.

How to Add a Website alias in G Suite:

When you add a website or subdomain as a website alias in G Suite, you give every account the power to send or receive an email with either the organization's primary domain or the added alias domain. This is most helpful once you want an email sent to people at either address to deliver to an equivalent account. 

To add a domain alias:

1. Sign in as a G Suite administrator.

2. Select Domains, choose to Manage Domains, then select Add a website Or a website Alias (Figure A).

Figure A:

To add a domain you own to G Suite, sign in with an administrator account at https://admin.google.com, choose Domains (left), then Manage Domains (middle), then Add A Domain Or Domain Alias (right).

3. Confirm the Add a website Alias Of [yourdomain] button is chosen.

4. Within the Enter A Domain Alias box, enter the domain or subdomain you would like to enter as an alias, then select the Continue And Verify Domain Ownership button (Figure B).

Figure B:

Choose to Add A Domain Alias when you want to give every G Suite account in your domain access to email not only at your organization's main domain but also the added domain alias.

How to Add a Further or Secondary Domain in G Suite:

When you add a website as a further or secondary domain, you gain the power to feature a replacement G Suite account with an address at either your organization's primary domain or the secondary domain. A secondary domain could also be helpful once you wish to manage accounts with distinct domains, but within an equivalent G Suite administrative setting. 

Note: G Suite settings for your domain apply to all or any accounts, no matter the various domains. If you want to manage the settings for a group of accounts, you can create organizational units.

To add an additional (secondary domain):

1. Sign in as a G Suite administrator.

2. Select Domains, choose to Manage Domains, then select Add a website Or a website Alias (Figure C).

Figure C:

Choose to Add Another Domain once you want to make accounts with a special domain within your organization's G Suite setup.

3. Confirm the Add Another Domain button is chosen.

4. Within the Enter, a website Name box, enter the domain or subdomain you want to enter as an alias, then select the Continue And Verify Domain Ownership button.