Launches the webOS Email application in the compose new email view. Can pre-populate any or all email fields.
Example usage (populates with subject (summary) and body (text):
this.controller.serviceRequest('palm://com.palm.applicationManager', { method: 'launch', parameters: { id: 'com.palm.app.email', params: { summary: 'Check out this News story...', text: this.storyFeed.stories[this.storyIndex].url } } });