Nope. I too treat some conversations as ephemeral. Chats mostly fall in this category. Lengthy letters fall in a different category which is stored and backup.
The examples of the page don't work. Would be nice that they have some working examples right at hand to see how the redirecting or the mirroring work on each case.
Upload an image and allow anyone to add it to their mobile homescreen. Similar to how people have photos of their friends or family in their wallets.