To learn more about an underlined place without leaving your Mail message, just hover over the place name and choose Search from the menu that appears. The Yahoo! Shortcuts overlay will appear, displaying a photo (when available), useful links, and Yahoo! Search results from one or more sources, including Image Search, Web Search, News Search, Yahoo! Answers.

You can get more results from any one source by clicking the More link that appears in each section, or choosing from the menu of links at the bottom of the overlay. A new browser window will open, taking you directly to the Yahoo! Search results page you've chosen.