To ensure your staff ships an order on time, you can add a Ship By Date to your orders in ShipStation. This information will then display in the Order Details and in the Ship By Date column, which you can use to view and sort orders by in the Orders grid.
Most stores do not include a Ship By date as part of the order information sent to ShipStation (with the notable exception of Amazon).
To add Ship By Date on a Single Order:
To add a Ship By Date in bulk:
Set the Ship By Date With Automation Rules
You can automate this process using Automation Rules so the Ship By Date is set as orders import. Review the Automation Rules article for details.