https://www.youtube.com/watch?v=L9dsvQVgUo8
Today we are announcing a new feature that significantly enhances the workflow for fulfilling orders in Cart66. We’ve added the ability to include a tracking number and automatically email the tracking information to your customer when you mark the package as shipped. If you are shipping with USPS, FedEx, or UPS the tracking number will automatically be linked to the shipping carrier to track the package. Here’s how it works.