said by Noah Vail:Most POP clients don't encrypt unless you install security certificates at each end. I can sniff one and reassemble it on my networks. Sometimes I get passwords.
If you use SSL to access your gmail account, the email itself travels in plain text. I think Hushmail is supposed to deal with that, but I'm not very familiar with it.
NV
Hushmail PGP encrypts the message before it leaves the user and it only decrypts it when it is delivered to the recipient. In addition the User-to/from-Hushmail session is SSL Encrypted. Thus sniffing does no good.