You can now try Google Calendar with Outlook for Mac
Microsoft is letting anyone try Google Calendar and Contacts support for the Mac version of Outlook 2016 today. A preview of the upcoming feature is now available for download, and macOS users can simply install the app to gain access to Google Calendar and Contacts support. You’ll be able to add, delete, and edit events in a Google Calendar through Outlook for Mac. Gmail users will also be able to make use of the Focused Inbox feature in Outlook, and travel booking / package delivery tracking.
Regular Office 365 users will need to wait until later this year to obtain the Google Calendar and Contacts support, but everyone else can download it directly from Microsoft’s preview site.