I'm using a signature for the first time with Mail since I am using my professional account with it. There are a couple of annoying things. One is that Mail doesn't add a signature separator of any kind. The other is that my signature from this account is not added when I reply to an email sent to it; it only appears when I create a new message. When I hit "reply," I get a drop-down menu with an option to add the signature, but it doesn't happen automatically (and still no separator). Is there a preference or plug-in that would help with either of these problems? Thanks.