SpamAssassin Rule: BLANK_LINES_80_90
Standard description: Message body has 80-90% blank lines
This suggests that the sender is trying to hide content "below the page fold", that the recipient may not scroll down to see. This may include nonsense characters or random text taken from the Web, intended to thwart pattern-matching filters by sending slightly different messages to each recipient.
The default scores for this rule can be found in the online list of tests.