Spam Cop Offers on-site tracking and reporting of unsolicited email for free. Includes information on how to find email headers for most mail programs and member benefits.
Spamhaus Provides detailed lists of all known spammers and ISP's that are known to be spammer friendly. Includes a list of spamware: any email program designed to disguise the senders information.
SpamHelp Anti-spam resource featuring articles, software, services, appliances, tools, books and anything related to spam.
Bluebottle Spam-Free Email Free spam-protected email with 250MB of storage, POP3 and web-based access and outgoing SMTP. Bluebottle only accepts emails from trusted senders making your email spam-free. Paid service levels are available with enhanced features.
CAUCE The Coalition Against Unsolicited Commercial Email is a group of volunteers fighting for legislation to stop unsolicited email. Provides legal steps taken and what everyone can do to help.
Email Laundry, The Anti spam and virus service. Free trial available. There is a forms page where you can sign up for the 30 day trial of the service. A downloadable pdf is also available with technical details of how the service works.
Fighting Spam on the Internet Provides information on spam, what it is, who does it, and what can be done to regain control of personal and Internet providers' system resources.
Firetrust: Email Security Provides information about email security, spam filtering software and anti virus software. Products include MailWasher and Benign.
Mailshell Anti-spam and email management service. Includes caller I.D. for email, create an unlimited number of disposable email addresses, unsubscribe from any list or company instantly, and get free email forwarding.
Maps: Mail Abuse Prevention System Provides spam prevention resources to system administrators and services to Internet users. Includes list management principles and abuse, blackhole list, and legal steps taken.
Sam Spade Offers tools for tracking unsolicited email and online abuse. Includes the complete program for download or use the tools online, tool definitions and uses, and technical support.
Spam-L FAQ Provides detailed information on how to track the source of spam and file complaints to ISP's. A large interactive resource for anything to do with or about spam.
Spamex An online service allowing users to create multiple disposable email addresses when signing up or reregistering with an email address. All mail is forwarded to personal account.
Spamgourmet Provides free temporary email addresses for spam prevention and tracking. Also provides code for scripting similar services.