hi, this has probably been asked before sorry, please can i ask how does CIS, protect against infected emails, does it have a e-mail scanner?, does it need one, also can i ask the same question about a web scanner? thank you. ??? ??? :-TU
against what do you want to be protected? and what of it is not covered?
this is the important question for your interest.
while the names are the interest of the advertising 
It is Comodo’s view that when a virus gets written to disk or to memory it is early enough to catch it.
Comodo does not believe in having various shields like web shield, email shield, IM shield, p2p shield etc. It only increases system load. Not having those shields keeps CIS lightweight.