Revised Gravatars Plugin Posted 2010-05-20 by Phil. I have changed my OS X Address Book plugin for Gravatars to handle mixed-case email addresses. I have also given it a more permanent home at this page. Leave a Reply Click here to cancel reply. Name (required) Mail (required) (will not be published) Website XHTML: You can use these tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong> Authenticate this comment using OpenID.