You have seen in many websites where webmaster use email address as a icon as shown in the figure.
Now reason webmaster use icon instead of text is just to prevent getting spammed by the email bots who crawl through the web .Email bots will fail to read images and you can easily trick those email bots using Email icons in your website.
You can create GMail, Hotmail, MSN, Yahoo!, AOL and many other email services email icon using email icon generator
