If you haven’t already, you should start seeing more articles like this one about ‘metadata.’ It isn’t just about reading the what of your email, but the who, when and where too…You know we don’t copy or save your email, nor CAN we read the contents of your email, but ShazzleMail’s architecture has the potential to significantly reduce metadata. We’re working on it.

http://www.businessinsider.com/whats-the-deal-with-metadata-2013-8