Last year, Capital One bought up ING Direct and made the awkward transition from the hip, orange-branded Dutch company to red-and-blue American company that most people know through those whacky commercials. Needless to say, many customers were not thrilled. However, Capital One has successfully re-branded ING Direct as Capital One 360 and made internet banking as easy as it had been before. And their email messaging is simple and effective.
Here is an example of the "need a new mortgage?" email, executed to perfection. See below.