If you have to publish your email address, use the following format:

robATsheepareUNDERSCOREniceDOTnet. An automated spambot will not be able to read that, but a human will.

Why? There are spambot crawling this, and other forums, and they will pick up email addresses and send you loadsa spam. The spam filter will also flag posts with live email addresses, and will need to be edited by mods or admin.