kivy/plyer — pull request #48 by Davideddu (2014-04-02 01:45:33+00:00)
Title: add Windows email support

Note: I haven't tried it as I don't have Windows. I simply replaced the "xdg-open" part from my linux implementation with what I found here, line 94:
http://code.activestate.com/recipes/511443-cross-platform-startfile-and-mailto-functions/