How to integrate Order Delivery Date with Fulfillment Platforms?

We are saving our order delivery date on Shopify’s order page by passing the parameter to notes as additional details.
Some third-party order fulfillment services are using ORDER API to get order details.
In order to get ORDER DELIVERY DATE details and send them to the third-party fulfillment integrations, please contact the third-party fulfillment app support team and tell them to pass our parameter to get order delivery details.