Taking your email signatures from blah to bling is a simple way to set your messages apart from others, and it can be especially important if you need branded emails for your business. If you’ve ever seen one of those fancy email signatures that have Facebook, Twitter, or other social networking links, then you know what we’re talking about. Try as you might, but you won’t find any option in OS X’s Mail app to create image and link-based signatures. Fortunately, you don’t need any special software to pull this trick off. Continue reading to learn how it’s done.