Search could work just fine with a client-side generated (Google hosted) encrypted index. Spam Filtering is a big one though. Most people don't realize that 9

Search could work just fine with a client-side generated (Google hosted) encrypted index. Spam Filtering is a big one though. Most people don't realize that 98% of emails are spam. The spam that finds its way to your spam folder is only a tiny tiny fraction of the spam that was sent to you. The only reason that spam got through is because of the off chance that it might not be spam.