What is G Suite Sync for Microsoft Outlook ®?
G Suite Sync for Microsoft Outlook is a program available for PC users with enterprise Google Apps accounts to sync their Google Mail, Contacts, and Calendars with a compatible version of Microsoft Outlook (compatible versions are Microsoft Office 2003 or higher). G Suite Sync uses the MAPI protocol to sync data between Google and a Microsoft Outlook data file (.pst)
How can I get G Suite Sync?
G Suite Sync is available through the following link.
...
We advise users to look through the "What is GASMOGSSMO" article and the "Getting Started with G Suite Sync" article before installing.