SpamAssassin Rule: EMAIL_ROT13
Standard description: Body contains a ROT13-encoded email address
ROT13 is defined as: The simple Caesar-cypher encryption that replaces each English letter with the one 13 places forward or back along the alphabet, so that "The butler did it!" becomes "Gur ohgyre qvq vg!" This test indicated an e-mail address was encoded using ROT13. This is normally done to hide the identity of the recipient used for list washing.
The default scores for this rule can be found in the online list of tests.