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Spam
E-mail Spam, also known as "bulk e-mail" or "junk e-mail," is a subset of Spam that involves nearly identical messages sent to numerous recipients by e-mail. A common synonym for Spam is unsolicited bulk e-mail (UBE). Definitions of Spam usually include the aspects that email is unsolicited and sent in bulk. "UCE" refers specifically to "unsolicited commercial e-mail."
E-mail Spam slowly but exponentially grew for several decades to several billion messages a day. Spam has frustrated, confused, and annoyed e-mail users. Laws against Spam have been sporadically implemented, with some being opt-out and others requiring opt in e-mail.