One thing I've found helps - I've deleted the Outlook Express shortcut icon from my desktop and start menu, and replaced it with the MailWasher oner. That stops me from inadevertently opening Outlook Express directly, rather than via MailWasher.

If Dante was writing the Inferno today he'd have a special circle of hell for people who play these kind of games - virus designers and unleashers, malevolent hackers, trolls and suchlike.