Switching default shipment notification email

As of Jan 20th, 2022, we are switching Rush Smart Email Notifications default email from to for all Shipments and Order events sent out.

All functionalities will be kept the same, and you are impacted only if you are using Rush Smart Emails. 

As a note, all email replies are always going to your default store customer email set, not to rush.

Change is needed as part of the migration from to domain.