The Quickbooks integration allows you to sync contacts and queue a review request if an invoice is created.
Step 1: Integrating Quickbooks
Navigate to Integrations, and locate the Quickbooks integration.
You'll be redirected to Intuit's login page, where you can log in to Quickbooks.
Once logged in, you'll be asked to "Connect" to allow Quickbooks information to be shared back into the system.
In the system, navigate back to Settings > Integrations, and you should now see Quickbooks is connected!
Step 2: Using Quickbooks
You can check the box under the Quickbooks integration to auto-send from Quickbooks.