Yes, of course - but you can decide whether to or not simply by checking the sender.
Spam
It is waste of time and money to spent for block spam mails. That will not controlled by anything. You may just report it on some spam filters and spam alert sites. I got more than 40 spam emails per day when i have yahoo mail id. You just delete the spam emails Don't open it. If you need to identify the spam emails without open it then visit some spam block lists. Also you can alert people by sending your spam mails to spamus@spamspamgoaway.com. and more on internet. That will protect others from yours affected one.
They have those so computers can't sign up for a faulty or spam e-mail account.
Did you sign up your e-mail? How long did you wait? Check your spam.
Spams can be avoided as:One way to avoid spam or junk mail is to create a filter that finds and does something to e-mail that you suspect is spam.Another tip is not to register yourself with true id to sign up for things on the internet. These places often share that e-mail address with other companies that then send you spam.
Well through your e-mail address, but beware. Usually it's spam, like the e-mails about the displaced royalty in Nigeria which needs to move it's funds, etc... It's just best to not even open it, sign it as a spam and delete it on the spot.
If you're receiving spam and it's entering your inbox then make that particular e-mail as spam and normally all e-mail systems send every e-mail from that particaular address to the spam box and after that you can simply delete it.
Junk mail or spam.
Spam is an ad to sell you something that you did not ask about. A scam is trying to steal from you.
most of mail reader software or internet email service has spam filter you can configure
Open Source mail filter, written in Perl, to identify spam using a wide range of heuristic tests on mail headers and body text. Free software.spamassassin.apache.org/
The current popular software for blocking spam are: Spam Fighter Pro, Cloudmark DesktopOne Pro, Mail Master Pro, Choice Mail One, IHateSpam, CleanMail Home,Spam Bully,Spam Eater Pro and Spam Buster.