Sure they can.
Their servers do it automatically to serve up ads to you on the right.
Will a person look at your emails?
Not unless they are alerted by a server to something illegal or criminal.
If you are doing something in your business that is illegal and violates the terms of service, they have a right to investigate your usage of the service and terminate it.
If you were google, wouldn't you? What if your datacenters alerted you that you had plotting terrorists -or even child pornographers as users? I think you would.
They have to be able to detect these things and shut them down. They do it through scanning algorithms -not people. Much more efficient and secure.
Read their terms of Service and read the privacy policy. You already agreed to them by signing up.
Google takes your companies privacy and security seriously. They are more serious about enterprise security than any company I've ever worked with.
They are not going to allow anyone to randomly browse your data.
It's not even stored in a humanly-readable format.
Your legal, proprietary data is safe in google apps.
They even shred old harddrives when they go faulty.
Check it out: http://www.youtube.com/wa
