One of OS X Yosemite’s new features is the Markup feature in Mail, where instead of using Preview to annotate a PDF or image before attaching it to an e-mail, you can perform these edits right in your new message. This not only adds exceptional convenience for managing your attachments in your various correspondences, but also reduces clutter and the need for odd workarounds such as printing a document to a PDF in Preview, annotating it, and then printing it to PDF again for the convenience of creating a new e-mail message with the PDF. Continue reading ⇒