Google Integration is a conduit to the Google Apps you're used to working with so you don't have to learn a new interface. If you want Google Contacts in your WebsiteBox interface, you can import them to work with them there. This is more efficient, as you may have thousands of contacts in Google.
Once you’ve integrated with Google Contacts, clicking on the Google Contacts icon takes you to the Google screen you’re used to working in.
The same thing works with the Google Drive App Icon.
It is the same with Calendar.
If you want to check Gmail history or send via Gmail, you can do it.