I have noticed that Outlook (Outlook 2013) is showing the message "if there are problems with how this message is displayed, click here to view it in a web browser." on my mails created with Foundation albeit the message looks perfectly good in Outlook. Even worse when following the link prepared by Outlook the message is shown in a broken format (because it uses IE7 display mode in IE).
To get rid of this I found http://stackoverflow.com/questions/19631932/prevent-if-there-are-problems-with-how-this-message-is-displayed-on-outlook-20 and applied the mentioned metatag to ..src/layouts/default.html. So this solves the problem for me, not sure if there is any other method for this.