Ezine Check (Popularity: )
http://ezinecheck.com Checks your newsletter to see if it is spam. This service stops your opt-in newsletter from being labeled as spam.
Mailinator (Popularity: )
http://www.mailinator.com/ Offers web-based access to temporary public mail accounts that are created on the fly as mail comes in.
MessageDefense, LLC (Popularity: )
http://www.messagedefense.com Offers services to businesses by acting as an agent between senders and recipients to prevent spam and other insecure email. ...
Peer-to-Peer (Popularity: )
http://www.peertopeer.net/ Anti-Spam gateway which filters out spam and viruses for an entire domain. A 30-day free trial is offered.
POPFile (Popularity: )
http://popfile.sourceforge.net/ Open source automatic mail classification tool using Bayesian statistical methods. Offers details about installation and configuration procedures for the windows ...