Nouran, under no circumstances should you ever answer one of the those spams. You should send it to your "this is spam" folder and then delete it. I use Yahoo email and I get at least 50 spam emails a day, I set my email account to delete them everyday.Every day at one or two sneak in to my regular account and I am amazed at how many "new " friends I have out there. If you don't know who sent the email, then delete it. If it comes with an attachment, do not open it or you will possibly infect your system with a virus. Remember, if it sounds to good to be true then it probably isn't.

Yes, as danno said, don't even waste your time responding to the e-mails. Occasionally the simple fact that you opened it will alert the other end that your email is valid, and more spam emails will begin. As a General rule, ignore spam messages.