Google is testing a new feature of Gmail’s mail service – letters with a given lifetime. Such messages will disappear after a predetermined period of time. This is written byTechCrunch with reference to its own source. In addition, these rules will be subject to additional rules.
In the screenshot you can see the “privacy mode” icon, when activated, the recipient can not redirect the letter further, copy and paste text from it, print it out or upload it as a file to the computer.
The user can set the lifetime of the letter in one week, month, year and so on. You can also request the recipient to verify the identity by entering the password sent by the text message.
How soon such a function appears in the mail (and will appear) is unknown. In addition, there are compatibility issues with other mail services, as not all use Gmail.