Outlook (video directions) Outlook Express (video directions) Windows Live Mac OS X Mail Using a signature file to promote yourself and your business.   You’re probably familiar with e-mail signature (or “sig”) files — they’re the few lines of contact information that many of us put at the bottom of every e-mail we send. Most e-mail software programs allow you to create and use sig files — even AOL. I’ve heard some people who don’t use sig files defend their position by saying, “All … [Read more...]