In 1996, Microsoft released Internet Explorer 3.0.
IE 3 included Internet Mail and News 1.0 and the Windows Address Book. It was also the
first version to adopt the blue letter “e” as its logo.
Learn more at http://en.wikipedia.org/wiki/History_of_Internet_Explorer#1994.E2.80.931997:_Beginnings_.26_Spyglass.