Built to deliver your messages in the minimum bytes possible, WhatsTel is the most reliable messaging system ever made. It works even on the weakest mobile connections.
WhatsTel is free and will always be free.
WhatsTel offers Secret Chats.
Secret Chat messages can be programmed to self-destruct automatically from both participating devices.
This way you can send all types of disappearing content messages, photos, videos and even files.
Secret Chats use end-to-end encryption to ensure that a message can only be read by its intended recipient.