As of now, you can turn on disappearing messages for individual chats and messages will be deleted in 7 days.
But soon, you’ll be able to have your messages disappear by default when starting a new chat thanks to the latest WhatsApp update.
You’ll also be to choose after how long they disappear: 24 hours, seven days, or 90 days.
The pro guide to becoming a WhatsApp ghost
To switch on disappearing messages by default, follow these steps:
>Go to WhatsApp Settings
> Tap Account
> Default message timer and select a duration.
It’s not yet clear when the update will arrive, but given WhatsApp’s announcement, it will likely be with us very soon.