It starts with your Internet Service Provider because that is where it all. To catch spam as
it comes in, they use a sophisticated software on their email servers and this way they
prevent it from reaching you.
That's where you go for individual anti-spam software, which runs
right from your email
program, whether that's Gmail, Outlook, or some other program. It flags emails that it
considers to be suspicious content and sends it straight into a spam folder, not your
regular inbox setting it aside for you to investigate later.
One approach developed long ago is called content filtering, where
examines the body and subject line (headline) of an email, as well as words in the
The subject line will always be different and tempting like "Win a
Trip to Hawaii!" (Guess
which one might be spam.) Content filtering examines the headline against an extensive
internal database of words and terms that spammers use, like the ones such as:
Gap discounts Free
Win Extra Cash
How to be a Millionaire
Content filters only block emails that contain flagged, "spammy"
words, word combinations and
word phrases. So spammers will alter word spellings and use other tricks to avoid getting
blocked out so they can sneak their messages through to you.