Telegram announced today that they have added a feature that allows users to delete any message in a one-on-one chat and have it be removed from both the sender and recipient’s devices. To further protect user’s privacy, Telegram is also introducing anonymous sending, which strips the link back to the original account profile of a forwarded message. Other features announced today include a settings and emoji search field and the VoiceOver on iOS and TalkBack on Android accessibility features. The messages will disappear for both you and the other person in any private chat.
Source: https://www.bleepingcomputer.com/news/security/telegram-now-lets-you-delete-a-received-message-from-senders-device/

