SpamAssassin Rule: TVD_SPACE_RATIO
Standard description: eval:tvd_vertical_words('0','10')
According to a comment in the rules file "it's the ratio of spaces to non-spaces in each paragraph. apparently messages where generally there are lots of spaces mean the message is spam."
Extra space in HTML messages will be ignored in mail clients, but may not be ignored in pattern-matching filters. Slightly different messages may be sent to each recipient to avoid filtering.
The default scores for this rule can be found in the online list of tests.
Commited to main rules as revision 378252.