WhatsApp: Update will delete images after recipient has seen them once

'Expiring Media', discovered by independent WhatsApp experts WABetaInfo, means media can be deleted after the recipient has seen it and exited the chat. https://www.dailymail.co.uk/sciencetech/article-8785345/WhatsApp-New-update-allow-users-delete-image-sending-it.html?ns_mchannel=rss&ns_campaign=1490&ito=1490