Reporting spam is useful only if the recipient of your report can analyze the full headers of the spam email you received. If you don't know how to show full headers of an email in the email client or web mail application you are using, you can find instructions for a large number of programs and applications on this helpful page: How to Get Full Headers in Your Software. (The WHO@ site has more helpful information you may want to look at.)
Spam should always be reported to the ISP to which the originating IP address belongs. SpamCop can help with this process.
For particular types of spam there are additional email reporting addresses;
some countries also have general email spam-reporting addresses specific to that country;
these should be used in addition to any type-specific reporting adress.
These pages summarize these extra email reporting addresses, one page for each category.
Unconfirmed addresses (no reference web page found) may be mentioned but not as "live" mailto links.
All email addresses (text as well as mailto: links) are dynamically obfuscated to prevent harvesting by spambots.
Reporting addresses are organized by type of spam. Choose a page for one of the categories below, or go to the all-in-one page.
Additions and corrections are welcomed. Please provide a reference to a web page or other evidence that the owner of the email address actually wants to receive spam reports; also specify reporting criteria when known. Reporting spam to an address that isn't set up to handle that particular type of spam will hinder rather than help!