Disappearing messages will appear in WhatsApp, How they will work
WhatsApp is working on a long-awaited feature disappearing messages will appear in the messenger. Detailed information about the future function has appeared on the new FAQ page.
New messages sent after the feature becomes active will be deleted in seven days. Disappearing messages will work for both individual and group chats, but only group administrators can enable or disable this feature.
WhatsApp also indicates that the message will be deleted in seven days, even if the user does not open WhatsApp during this time. However, the preview of messages in the message window will remain, even if they are already deleted from the chat.
If users send missing messages to a group/chat where this feature is disabled, they will not disappear.