WhatsApp Tests Read-Triggered Disappearing Messages
WhatsApp is getting a new setting for disappearing messages that causes them to vanish based on a countdown that starts only after they've been read. Spotted by WaBetaInfo in the latest WhatsApp TestFlight beta, the new option starts a countdown after the recipient reads the message, rather than starting the countdown when the message is sent.
20 May 10:57 · MacRumors