This feature is not enabled by default and does require set up from within Pinch and QuickBooks.
Essentially, the solution is a simple URL to paste into the template. The URL does not look very clean; it is a text link, but it does function as intended.
You can find this Pay Now URL in your Account Settings under the "Getting Paid" tab.
Here is a step-by-step guide on how to add this link to your QuickBooks invoice email template.
1. Navigate to the Cog icon
2. Account and Settings
3. Sales
4. Messages - Edit
5. Paste the link into the "Email Message" section.
Once this is complete, when a customer receives their invoice-issued email, there will be a URL for them to click that will link them to the Pinch Pay-Now page that is associated with the correct invoice.