It is common practice now to add an upsell app post purchase. Shopify
supports updating orders after the order is created - with apps like One
Click Upsell from Zipify and Carthook. This was a popular requested
feature on the previous Shipstation com...
Exciting updates! Is it already on the roadmap to enable using apps like
OCU for post purchase upsells that require a delay before orders are
sent from shopify to shipstation? more info here:
And here is a bit more context from the folks at Carthook: "For some
additional context on fulfillment, Shopify released a fulfillment hold
feature this Spring that affects any order that involves a post-purchase
offer - this affects all post-purchas...
Here are two previous posts on the old discussion board for reference: 1