+A **spam filter** is a system designed to identify and block unwanted electronic messages, known as [Spam](/wiki/spam), before they reach a user's inbox. It employs various techniques, often utilizing [Machine Learning](/wiki/machine_learning), to analyze incoming [Email](/wiki/email) and distinguish legitimate communication from junk.
+## See also
+- [Spam](/wiki/spam)
+- [Email](/wiki/email)
+- [Phishing](/wiki/phishing)
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