You are would able to make out an email virus from their SUBJECT. Most of them contains anunsusal word, such as below:
Weah ^_^ :))
Hokki=)
Hi :)
ello!=))
Hello -:))
Hey, dude, it's me ^_^
access Mpeg
Re:your text
Re:Text message
Re:Msg reply
Re:Is that your document?
Re:Hot Movie(MPEG)
Re:Sexy pics
Re:Information...
Re;Important info
Re:This is your photos!:)
and more on sex, softwares or just reply messages
If you received emails with the subject as above, you should delete it immediately.
Also dont open any mail in your spam folder even if it's by your friend coz it could that his comp has been infected by virus and that virus is sending mass mails. Although you could open a mail in you spam box if you are expecting one but double check the id and subject. in Gmail if you just hover your mouse over the id it displays the complete id.
Make use of the spam filter provided by your email provider.
