For those saying Google is a benevolent company, here are a few signs that the bean counters are taking over: Tracking Google Apps for Education and even paid Google Apps for Business emails to build ad profiles, making misleading statement to the public that they're not doing so, and then when it finally came to statements to federal court, lacking the dare to continue lying and finally confessing the truth and then…
I would also ask if there is a "legal safeguard" at any email service? You could equally call out Yahoo and Microsoft for lack of transparency in their internal procedures around email. They just lack a publicly reported incident of an employee over-stepping bounds.