... box, where you can specify what should set off the rule and what it should do in response. 5. In the lower half of the box, specify what you want to happen to messages that match the criteria. ... Reply. Mac OS X, in other words, gives you a second chance to address your reply to everyone.) 19 .5. 6. Forwarding Messages Instead of replying to the person who sent you a message, you may sometimes ... this joke about your mom." Finally, address it as you would any outgoing piece of mail. 19 .5. 7. Redirecting Messages A redirected message is similar to a forwarded message, with one useful...