Under Business Cards, check the box that says Mail
Now select the file that you want to be your Business Card that will be attached to all outgoing emails
On each outgoing email will appear a tiny rolodex card icon. When this is clicked, your business card will open up to the recipient. Remember that these emails can be forwarded so keep that in mind when selecting the information you would like seen by others. And there you have it, it’s just that simple.