Description of the feature request
Allow users to have multiple email addresses which can be set to receive notifications per group. Similar to github.
Use case / for what or how I would use it
Users can be in multiple orgs which they would usually want to keep those orgs notifications seperated from other orgs email addresses. For example I would want to receive notifications for CI related this for org XYZ to name@XYZ.com and emails related to org ABC to firstname.lastname@example.org. The user can specify in their settings which email addresses to assign notifications to for each org.