mantra,

Avast acts as an antivirus not a mail sensor :wink:
IT can be programmed to automatically remove the virus, but will leave the header and subject alone unless they are indeed infected.

Most of the email you receive is ok. It is usually the attachments that contain viri.

Open up the On Access Protection Console, find the Internet Mail module and then Customize. Go to the Advanced tab and check “Peform Silent Action”.
Avast will now take the deletion action without the popup screen and siren alert.

Good luck.