<A HREF="http://www.searchdomino.com/searchDomino_Original_Content_Item/0,1410,291910,00.html">SearchDomino</A> has an article on ZixMail.com, a company hoping to provide email security and digital signature solutions through outsourcing. According to the article, ZixMail provides users with a way to send time-stamped, tamper-free messages that can only be read by the intended recipient or recipients. The message is encrypted using a private key or signature phrase.