2. Write your email like this - username (at the) domainname.com or net, or edu, whatever it may be.

3. Use a web form. Those who genuinely want to contact you will fill form with their details and get in touch with you. So you know who is contacting you.

4. Never reply to a spam email. Many advise that replying to a spam email confirms your email address to spammer.

5. While leaving your email address for filling up a form to get more information please check with their privacy policy, to ensure that they won't misuse your email for any other purpose, other than one you've requested.

6. Make use of your email provider's filtering facility to reduce spam.