A small San Francisco based software company named Streak has created a Gmail plugin that lets you send encrypted emails through your web browser before Google ever gets a chance to see it. Both the encryption and decryption occur on the local computer so the raw message never gets to Google’s servers. Even the drafts are hidden from Google. All Google sees is the encrypted version of the body.
The beautiful thing is that you don’t have to know anything about security keys becuase it works directly inside your browser and only the sender has to have the browser extension installed to send encrypted email.
On the one hand, SecureGmail isn’t bulletproof, but then again if you wanted bullet proof security you wouldn’t be using Gmail to send top secret messages in the first place.
Check it out.