> If they're wiretapping everything, there's no way for you to hide the fact of a communication taking place, but at least you can protect the data itself using

> If they're wiretapping everything, there's no way for you to hide the fact of a communication taking place, but at least you can protect the data itself using client-side encryption No, you misunderstand. With S/MIME, the email headers are not encrypted. This means someone can go to your email provider, get all your emails, and even though these are all S/MIME encrypted, build a nice graph of who you are communicating with, how often, correlate with significant dates, see the subject of each letter, file names of attached files, etc.