0 produced and used to prevent people sending and receiving unwanted emails, especially advertisements:
anti-spam legislation/policies/resources/tools
1 intended to prevent spam (= unwanted email) from being received:
One takes a sample batch of e-mail - perhaps 200 each legitimate and "spam" messages - and tells the anti-spam software which is which.
For example, victims that use common anti-spam hardware, software or services provide opportunities for such tracking.
The server also includes anti-spam, antivirus, email archival.
It is still a reference and a melting pot for anti-spam research and theorization.
Further modules have been released over time, each providing a particular set of functionality, such as traffic shaping, and e-mail anti-virus and anti-spam.
This is somewhat different from the anti-spam uses of property rights in attention, which treat an individual's attention as his or her own property.
It can signal anticapitalist or political protest; it can denote anti-spam activists, security experts, or open source advocates.
Finding that his customers were being harassed with junk emails, he sought ways to stop the problem and in doing so became an anti-spam campaigner.