If you don't want users in your organization to use a particular Google Apps service, disable it for your account. That way, it won't be available to anyone. You can disable all core suite services (Email, Chat, Calendar, Drive, Sites, Contacts, and Mobile) and services which you've acquired from the Google Apps Marketplace.

Alternately, you can enable any service for some users, but turn it off for others. To do that, enable a service at the account level, then turn it off for specific organizational units (see Turn services on/off for certain users).

To disable a service for your Google Apps account (and therefore all its users):

1. Sign in to the Google Admin console. 
2. In the classic Admin console, click the Settings tab and then select the service you want to disable in the left column. In the new Admin console, choose the category of service you want to disable (Google Apps, Marketplace apps, or Other Google services), select the checkbox next to the service you want to disable, and click .


3. Click the link to disable or uninstall the service.

   The link appears near the bottom of the page, and might appear on a separate sub-page for your service. Disabling a service makes it unavailable to users, but you do not lose any existing data.

   Gmail data expires in 30 days. If you disable email service for more than 30 days, users lose all email messages. Re-enabling email after that time results in empty email accounts.