Allow and employee to select which notifications go to a personal vs. work email address

Currently there is only one email listed for employees. I would like to see them able to include both a personal and a work email address, and filter which notifications go to which email. For example, someone with a manager role may want to have notifications to review PTO requests go just to their work email, but schedule reminders go to their personal email. Often people are not in their personal email during the work day, and not in their work email when they are home. This would allow them to access notifications in a more timely and practical manner.