If you don't think that humans have access to the contents of your cloud hosted email service then I've got a bridge to sell you.
Re:We're Fighting the Feds Over Your Email
by eitland on Wednesday July 30, 2014 @02:29PM
(#8110083)
They have access to it yes, they just risk being fired if they nose into data unrelated to their job.
(That is, at least for employees at one of the big ones. ;-)
Exactly. Employees at the UPS store can steam open your physical mail too. The question is whether you have a reasonable expectation of privacy, not whether you have actual privacy.
And the "reasonable expectation of privacy" in cloud email is based on the fact that, while computers necessarily have access to the data (it is not possible to provide email service otherwise), humans generally don't.