After installing ESET NOD32, all inbound and outbound emails via Outlook / Outlook Express will be scanned, preventing you from email infections. By default, ESET NOD32 will append a label in all inbound and outbound emails so that you know ESET NOD32 is up and running. If, owing to some reasons you do not want the label to appear, please refer to the following steps to make the change:
Open ESET NOD32 Control Center, click IMON on the left and then Setup on the right.
Make changes referring to the following picture.