e mail

do any of you computer experts know why I'm getting email with no subject or from?? I'm affraid to open them. this has never happened before.  I just hope its not important and i'm not openning them.  I"ve received 4 of them.  has this ever happend to you?

NEVER open anything you don't recognize. Just delete it. If it's important you will get a regular email with a subject and from.

There's a lot of weird viruses out there.