When we delete large number of old emails for users, they receive large number of emails with
Subject: Not read: This is a test email
"Your message
To: user x
Subject: This is a test email
Sent: Monday, December 1, 2013 .....
was deleted without being read on Monday,. ......
I want to block all such emails in getting into user's mailbox. So far, I've created only 1 rule that checks Subject for "No read:" from Inside to Outside. This would cause issues if legitimate emails uses the phrase.
Looking at the header, it doesn't contain disposition as mentioned in other articles or any other items that can be filtered with...
Is there another condition I can add in order to prevent someone using these words to not get blocked?