Antispam filter

Very handy feature for users, which use, for example “The Bat”,“Mozilla Thunderbird” and etc.

there is one already called for Comodo Antispam (CAS).

Maybe build this in CIS?

what benefits will that have

Nowadays, most of the people are using online mail services like GMail, Yahoo, etc, so this feature would be just an unnecessary resource hog.

No new modules (except those that provide better virus protection like DACS, maybe Valkyrie) are needed in CIS.