Well, businesses are not as honest as you think. Google would be reading Microsoft emails in a microsecond. The only reason individual people allow a third pa

Well, businesses are not as honest as you think. Google would be reading Microsoft emails in a microsecond. The only reason individual people allow a third party to maintain their data is that they usually don't have anything of monetary value in there. Certain Microsoft emails are worth millions of dollars in the wrong hands. That and there is public trust of the brand that they won't do anything stupid.