Question: mail doesn't apply rule
I set up a rule in mail Version 9.3 (3124) under 10.11.6 (15G17023) on a MacPro 4.1. Rule is to delete messages that contain an array of two specified words separated by a simple blank space. Mail doesn't apply this rule even though this array is present, legible in the mail and found in that message's raw source.
Any hint appreciated.
Mac Pro, OS X El Capitan (10.11.6)