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A mail filter is a piece of software which takes an input of an e-mail message. For its output, it might pass the message through unchanged for delivery to the user's mailbox, it might redirect the message for delivery elsewhere, or it might even throw the message away. Some mail filters are able to edit messages during processing. Computer software (or simply software) refers to one or more computer programs and data held in the storage of a computer for some purpose. ...
Wikipedia does not yet have an article with this exact name. ...
Motivation
Common uses for mail filters include removal of spam and of computer viruses. A less common use is to inspect outgoing e-mail at some companies to ensure that employees comply with appropriate laws. Users might also employ a mail filter to prioritize messages, and to sort them into folders based on subject matter or other criteria. A KMail folder full of spam emails collected over a few days. ...
In computer security, a computer virus is a self-replicating computer program that spreads by inserting copies of itself into other executable code or documents. ...
Users Mail filters can be installed by the user, either as an extension of the operating system, or as part of their mail user agent. Internet service providers can also install mail filters in their mail transfer agents as a service to all of their customers. Corporations often use them to protect their employees and their IT assets. An email client (or mail user agent [MUA]) is a computer program that is used to read and send email. ...
An Internet service provider (ISP, also called Internet access provider or IAP) is a business or organization that offers users access to the Internet and related services. ...
A mail transfer agent or MTA (also called a mail transport agent, mail server, or a mail exchange server in the context of the Domain Name System) is a computer program or software agent that transfer electronic mail messages from one computer to another. ...
[[[[[[Information technology]]]]]] (IT) or Information and communication(s) technology (ICT) (also Infocomm, esp. ...
Customization Mail filters have varying degrees of configurability. Sometimes they make decisions based on matching a regular expression. Othertimes, keywords in the message body are used, or perhaps the e-mail address of the sender of the message. Some more advanced filters, particularly anti-spam filters, use statistical document classification techniques such as the naive Bayes classifier. A regular expression (abbreviated as regexp or regex, with plural forms regexps, regexes, or regexen) is a string that describes or matches a set of strings, according to certain syntax rules. ...
Document classification is a problem in information science. ...
A naive Bayes classifier (also known as Idiots Bayes) is a simple probabilistic classifier. ...
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