37signals/mail_view — pull request #40 by stopdropandrew (2013-04-24 22:24:59+00:00)
Title: Default to the last part of the multipart unless a content type given

Most mail clients will display the last part of a multipart email as the default (http://en.wikipedia.org/wiki/MIME#Alternative). This pull request just makes the initial link, without specifying a specific content type, show the default instead of html.