Is it possible to have 1 Subscriber (a single Subscriber Key) with 2 different Email Addresses? For example, the Subscriber has one address (firstname.lastname@example.org) for a newsletter and a second address (email@example.com) for account information.
Our thought was if a newsletter gets send to firstname.lastname@example.org the subscriber email address in All Subs is email@example.com. Then an account notification gets sent to firstname.lastname@example.org and the email address for All Subs is now email@example.com. I thought this could be handled through the Use as Root setting on a Sendable DE, but it looks like that was deprecated.
The use case is to allow a Subscriber to be communicated to different addresses for different purposes but still be tracked as a single Contact.