SpamAssassin is an open-source anti-spam platform which gives system administrators a filter to classify email and block spam by using a robust scoring framework and plug-ins to integrate a wide range of advanced statistical analysis tests on email headers and body text including text anlaysis, Bayesian filtering, DNS blocklists, and collaborative filtering databases.
MailTester.com allows you to verify if an e-mail address is valid or not.This can help you keep your contacts database up to date.MailTester performs a series of tests (DNS lookups, SMTP checks) on an e-mail address to determineEmail Spam Testing Tools Mail Tester
The Spam Score is a number assigned to each email by applying a set of rules and it is filtered by the spam firewall. The score is established based on a number of spam filtering tests performed on each email. The higher the SpamEmail Spam Testing Tools