5. Integrated PGP encryption
We can't stress e-mail security enough, and we think your
e-mail client should stress it more. Many apps make weak
attempts at encryption, but we demand integrated PGP, the
encryption gold standard, in every e-mailer. Users could
create a decryption key the first time they use the app, then
choose whether to autoencrypt every message or just click a
button to encrypt single pieces of outgoing mail. A similar
preference or button would autodecrypt on command.
http://home.cnet.com/software/0-8888-8-9161160-1.html
