The Spam Index is the first method for factoring a users’ actual experience in assessing the effectiveness of various anti-spam technologies. Based on the experience of over 520 business users, the users of challenge-response technology have the lowest average Spam Index, the most consistent Spam Index and the highest user satisfaction with the email experience.
The Spam Index Report compares users’ performance by anti-spam technology.
Complements The Problem with Email report.
