Shippo does not allow you to fully delete orders in order to preserve historical information however it is possible to hide orders.
On the Orders page, click the drop-down arrow next to the green “Create Label” button and select “Hide order.”
You can also hide multiple orders at once by selecting all of the orders you'd like to hide and choosing "Hide selected orders” from the drop-down menu that appears at the top of the page.
Note: If you hide all orders you will be unable to access them until a new orders imports. For this reason we recommend leaving one order on your orders tab at all times.
To unhide an order you need to filter the orders on your orders tab by "Hidden" by clicking on the "Add Filters" button and checking the "show only hidden" box.
You will then walk through the same process of hiding the order in the steps mentioned above. Currently there is not a link in Shippo to "Unhide order", so you will need to select the "Hide order" link again to unhide that order and have it placed back on your main orders tab.