Delivered/seen label in chat to shown if a message has been read y the recipient

We have been using the Ryver in our group for a while. It has a good chat capability, in fact, we use it as our main chat app in the group, but we face a problem because we cannot say if a message has been seen/read by the recipient or not. It would be great if we can have an icon indicating the condition of a message like what we see in common chat apps such as Whatsapp.