The image at the right is a GIF
with a transparent background designed to look like text on the page. Add some text close to the image so that the visitor will know that it is not a hyperlink. Your visitors will still have to type the address in manually, but at least it will appear on
the page, and it wont be harvested for spamming.
Note! If you create a normal hyperlink to your mail address from this image, it will be able to be seen by the web robots and possibly harvested.