Extending email headers will enable you to identify who sent you a particular email message and how you received it. Complete the following steps to extend the header of an email and to file a complaint with NetZero regarding the spam or offending message.

To show extended email headers in Mozilla thunderbird:

Click on the View menu, then "Page Source," (ctrl-U in windows, meta-U in unix, ?-U on the Mac) to view the full headers.

Note: If you want to report spam or an offensive message, you will need to copy and paste the full header and the actual text of the spam or offensive message.