“Reply All” button in Mail.app

Sometimes when you need to fire off a quick e-mail reply to someone you hit the Reply button… quickly. As you compose your brilliant reply you realize that what you really wanted to do was “Reply To All”. Instead of forcing you to close your composition window and start over, Mail.app features a handy “Reply To All” button right in your message composition window toolbar. Simply click to add the recipients and carry on with your brilliance.