describe YOURMESSAGEBOD It's great that our message did something; we don't care
score YOURMESSAGEBOD 2.5
-body NODELIVERY /(?could not be|has not been) delivered/i
+body NODELIVERY /(?:could not be|has not been) delivered/i
describe NODELIVERY We don't care if it could be or has not been delivered
score NODELIVERY 1.5