How will WhatsApp's 'disappearing messages' feature work?
WhatsApp's soon-to-be-launched 'disappearing messages' feature will make new messages sent in individual or group chats disappear after seven days. Either user can turn disappearing messages on or off in individual chat, however, only admins can do so in groups. The option won't be enabled by default and users will have to opt for it by tapping on the contact's name.