Yep, but there is a catch: Google plans on reading your mail and then delivering ads based upon the content of the email.
So if your wife sends you a note saying, "If you don't figure out a way to get your dick hard, then I'm going to be forced to bone Santos our pool boy."
Then Google will include three ads in her message:
first for V/agra to offer help for your problematic erectile dysfunction
second for Purina dog food to help build healthy bones
and to satisfy the most important need - a local pool service.