Thank you for taking the time to submit your Idea. We appreciate you sharing your idea and encourage you to continue submitting suggestions. As we simplified the VCS experience, we simplified this feature so now it only notifies if the message has not been responded to within a set period of time. There are some usability concerns that it would create additional interruptions as the device could potentially tone twice for every message sent with this flag. Is there a specific use case/scenario this request is attempting to solve?