I just read that everyone in the world can ready my mails (if intercepted in traffic by eavesdropping?). Also, it reads that current versions (book's from 2004 so I assume that new versions adopt encryption policies) of Outlook and Eudora have built-in crypto. Is it sufficient or should I use PGP on every mail I send? How about my favorite gmail? Does it include end-to-end encryption? If so, is it sufficient?
Sorry for being a newbie.