: By default, all one-on-one calls and private/group chats are protected, meaning only the participants can read or hear them.
: Set timers for messages to self-destruct after they've been read for maximum privacy. Beyond Standard Messaging Viber Messenger: Chats & Calls
: In a busy group chat, type "@" followed by a name to ensure that person gets a specific notification. : By default, all one-on-one calls and private/group