There is no OOTB feature to do so. Couple of approaches I can think off to acheive this
Simply add an utility shape in front of the assignment to execute CorrNew activity to send out an email to nominated email address.
Pros: Easy to implement
Cons: If the email needs to include link to Assignment, we cannot do it. However we can include link to Work Object which opens review harness. If this is not an issue, you can think off implementing this solution.
Extend Assign-AddAssign activity to additionally execute CorrNew activity to send out email conditionally based on WorkBasket Name.
Pros: Can include link to assignmenty, upon clicking Work Object would be opened in Perform mode.
Cons: Extending OOTB activities comes with risk of maintainence while upgrading the Pega versions.
May be we should raise an Enhancement Request for this :)
In the Workbasket tab, you can set the Contacts. The first contact is notified when you use the Work-.NotifyAssignee standard notify activity. The Work-NotifyAllAssignees activity will notify all the email contacts.
I stand corrected. You are right NotifyAssginee works. I got confused by looking to Assign- getContact activity. However there is a overriden version of it in Assign-Workbasket class, which I missed out.