As far as I know, as of v7 Tableau Server doesn't email anybody anything. In v8 there will be some alerting/emailing/subscribing features, for example users will be able to subscribe to a view and whenever the view is updated they will get an email.
Alternatively, you can use scripting, Tableau Server command utilities and optional third party tools to set up an email schedule, see http://community.tableau.com/thread/121590 for example.
But what kind of content do you want to be in the emails? Some content, but not all, is possible to extract via Tableau Server tabcmd utility.
Thanks a lot, Tracy. It really helped me.