SpamCopper – Easily report spam to SpamCop – MozillaZine Forums
SpamCop is a web site where you can report SPAM to help feed lists that block SPAM; plus SpamCop will report the Spammer to the ISP of origin.
Now with SpamCopper, an extension for ThunderBird, it is even easier to use the SpamCop service. To set it up you just put in your SpamCop ID (the mumble bit in your spamcop email address; submit.mumble@spam.spamcop.net). After the brief setup you can forward messages on to SpamCop for reporting simply by marking them as “junk” and then hitting the big SpamCop button in Thunderbird.
Shortly after you send the message, SpamCop will send you a confirmation email with a link to confirm that you really did think these were SPAM messages.
And that’s it; with a few clicks you can help fight SPAM in your Inbox.