[noibl]

Surprised Ars didn't mention this:

"Microsoft switched to Word (from Internet Explorer) as its rendering engine with the introduction of Outlook 2007 and hasn’t looked back (errr, forward?) since. Despite the email community’s efforts and a well-intentioned response from Microsoft, this means that HTML and CSS support in Outlook has remain virtually unchanged between versions 2007, 2010 and now 2013."[1]

Nice.

[1] http://litmus.com/blog/outlook-2013-still-powered-by-word-no...