I post them to Facebook usually, but I email them also. It is simple; I make one card design each year in My Digital Studio, and then send that to EVERYONE for their birthday! They love it, I look awesome! WIN- WIN! Here are the past few years samples I sent.
This one I adjusted a template and personalized a bit for my taste.
This one was also a template - I just changed the colors. This shows you don't even have to be terribly creative to make this awesome program work for you!
These two were fabulous! Last year I just made the same design and changed the monochromatic color. The simple design of these two makes them stunning.