Static subject keyword

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Revision as of 01:17, 15 January 2008 by Johnl (talk | contribs) (New page: {{ast |date=early 1990s |difficult=Easy |popular=High, built into many MUAs |effective=Low |where=MUA or MTA }} Subject filters were are are popular, since large amounts of spam still is a...)
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Anti-spam technique: Static subject keyword
Date of first use: early 1990s
Effectiveness: Low
Popularity: High, built into many MUAs
Difficulty of implementation: Easy
Where implemented: MUA or MTA
Harm: {{{harm}}}

Subject filters were are are popular, since large amounts of spam still is about things that rarely appears in legitimate mail, such as certain drugs, body parts, and implausible third-world military and financial stories.

They are easily subverted by euphemism or deliberate misspellings, e.g. v1@gra.