Hello, currently using Shipstation, it is possible to update nearly every property related to an order via the API. With the recent addition of being able to set a 'deliver by' date via the Shipstation UI, it would be very beneficial to also be update this value using the API. I emailed the API team and they confirmed that this is currently not supported by the API.
We would be using this to pull deliver by information from third party channels, and updating our shipstation order with it. It would be fantastic to see this implemented.
