Mailinator
Offers web-based access to temporary public mail accounts that are created on the fly as mail comes in.
MailMoat
Provides disposable email addresses to discourage spamming.
MailVeil spam prevention
Offers a service to munge email addresses using flash to prevent harvesting.
MessageDefense, LLC
Offers services to businesses by acting as an agent between senders and recipients to prevent spam and other insecure email. Includes links to news on spam.
MessageLevel
The company that invented true Message Level Authentication for e-Mail. Provides an overview of the concept, product descriptions, how to get it for your organization and how to become a partner.
Messenger Guard
Offers software to prevent messenger service pop-up spam.
mungeMaster Online
Online tool to munge and obfuscate email addresses to prevent email harvesting. Murge includes link text and tooltip text.
Netmails.net
Provides users with up to 100 disposable email addresses mapped to a single inbox and a web-based email account.
No Spam Email
Private email address with your own domain and unlimited aliases prevents spammers from obtaining real email address.
Obsfuscate Email Addresses
Ciphers email addresses to foil spambots.
OptOutByDomain.com
Universal opt-out by domain list; created as a "convenient opt-out" measure per the CAN-SPAM act.
Outlook Express Tutorial
Step by step explanation with screenshots of how to set filters.
Paul Graham: Antispam
An intensive study essentially discussing spam-filtering techniques.
Personal Email Networks: An Effective Anti-Spam Tool
An automated graph theoretic method for identifying individual users' trusted networks of friends in cyberspace. [PDF/PostScript]
PHP Spam Poison (phpwpoison)
An automated page generator that create long lists of fake email addresses to poison the spammer's database.
Protect Against Spam
Explanations on bandwidth protection, spam filter installation, email address concealing, asking spammers to stop spam and joining an anti-spam group.
Redirect Mailto: For Spam Prevention
Prevent e-mail siphons from harvesting your e-mail addresses by separating the address from the Web page while still providing a way for users to click a link and have it open their local mailer. Examples in Perl, OpenACS, PHP, and ColdFusion.
Remove Me Now!
Online spam reduction service. Requires registration to test their service.
SafeMailto - Email Encoder
Offers simple and user challenge JavaScript based email encoder to prevent email harvesting.
Sneakemail
Use disposable email addresses to communicate with businesses that you do not fully trust, then delete them if you get spam.
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