Reminders of Tasks to be sent on Whatsapp directly

It could be powerful if there was a way to combine your scheduler to the reminder. Say, I have set up a task for myself, which is to follow up with a client for payment, that client is not a team member in Periskope. So while I am setting the task for myself, if I have an option to send a reminder to a chat and me on Whatsapp, that can turn out to be very efficient. Same can be used to create shared to-dos with team, powered by reminders on Whatsapp.