Can a non-admin user from my domain add the Google Apps plan for my domain?

No. Only users that are Administrators on your Google Apps domain can add the Backupify/Datto SaaS Protection App to your domain. If a non-admin user on your domain tries to sign up for the Google Apps plan, they will not be able to add the app via the Google Apps Marketplace as only administrators can access and authorize app installs from the marketplace.

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To contact Backupify/Datto SaaS Protection support, click here to submit a Support Request, or click here for more contact options.