What a simple scam; a one line email that says:
You have a new E-CARD Message Waiting: Click Here
This email takes you to a website that tries to hijack your PC and tries to load a virus on your PC.
Hover your mouse over the link to see where it goes. If the link is an IP address, a strange looking link or odd looking website name just delete the email. Don’t take a chance on emails like this; you could have your PC down for days trying to clean this up.