Voltage Security claims to have created a software program that <A HREF="http://news.com.com/2100-1009_3-1023457.html">makes encrypting email easier</A>. News.com reports the so-called public key is derived from the sender's email address, eliminating one step in the process. The encryption program will support Microsoft Outlook, Microsoft Outlook Express, Microsoft Outlook Web Access, Lotus Notes, Eudora, BlackBerry, Hotmail, and Yahoo! Mail.