Reminder notifications

Is it on the roadmap, or maybe I’m not seeing it, where reminder notifications can be sent out to users if they have a task assigned to them they have not yet looked at? We have some issues where they are assigned, and even reminder comments are added by staff manually, and users are not always checking in on their assigned tasks. It may be that they have not subscribed to notifications, however we would like the ability to push reminder emails periodically.