Attachment Format Question

What are .zl9 or .zlq files good for? I use The Bat and NS Messenger as email clients, such emails look blank there since the mail client either blocks or isn't capable of handling it. I assume it's stupid script stuff, since it's usually to be found in "This is a very fun game I wish you would like it"-style emails which directly make their way into the trash section. Just curious.

I love google.

From http://www.icdatamaster.com/z.html

ZL9= AAICWpro/ZoneAlarm Mailsafe renamed File = .exe
ZLQ= AAICWpro/ZoneAlarm Mailsafe renamed File = .scr

This page is sorta fun. Im gonna poke around some more