People who send spam are called "spammers," and they send massive amounts of junk/bulk email to large numbers of people. They do this in hopes that the recipients will click on the links (or attachments) in the emails.
Useful things to know:
- Spammers collect email addresses from chatrooms, websites, customer lists, newsgroups and email viruses, which harvest users' address books. These addresses are then sold to other spammers.
- They use "email appending" or "epending" to gather additional data about their targets. They start with what they know -- like a postal address -- and use it to find the person's email address.
- Much spam is sent to invalid email addresses.
- Spam makes up the majority of all email sent.