Selling Channels Notification Flexibility

[amazon7]

Hello,

We currently have our Selling Channel notification set to: Number of hour(s) elapsed after label creation (24hrs) which works great for Mon to Thurs. However, on Friday the automation will mark it as shipped on Saturday but USPS won't scan it in until Monday due to not being open on the weekend. Amazon is suddenly cracking down on this and is threatening account deactivation which will force us to switch to a system that allows more flexibility. 

We need an option that allows this to be business day or allow you to map out each day of the week individually.

This is business critical for us.

Note: we did try the "The shipment first hits the mail stream" option but it does not work well at all.

Thank you.