Methods, articles, signals, and systems are provided for protecting email message contents. A self-removing message is designated as such by the message's originator, and a self-removal enhancement such as self-removal code or self-removal indicators are added to conventional message content before the...http://www.google.fr/patents/US6711608?utm_source=gb-gplus-shareBrevet US6711608 - Method for including a self-removing code in a self-removing message
Method for including a self-removing code in a self-removing message