We are enrolled in many SPAM complaint programs including Hotmail, AOL, etc. When you send an email campaign, some of your recipients may mark your email as “SPAM”. This kind of SPAM complaints are automatically detected by our system and those subscribers are removed from your lists.
You can now view how many of your subscribers have reported your email campaign as SPAM. This will give you an idea about the “quality” of your subscriber lists to avoid this kind of problems in the future.