Prototype available at https://www.figma.com/proto/yC9HWDufCJoUlbRQ7sJxrH/Messenger?page-id=0%3A1&node-id=3%3A198&viewport=4771%2C45%2C0.25&scaling=scale-down&starting-point-node-id=3%3A3&show-proto-sidebar=1
