Batch job Failure email Alert

Hi,

I have a requirement where

We need to send an alert to the business if a specific case in a batch job fails.

Clarifying the requirement

a) Not want spool of all successful logs

b) Want alert to the batch job that is executed and finished successfully but has a failure case inside the batch.

c) Is there a way at all to see/ differentiate between jobs that "finished" successfully but have case failure inside the batch vs batch finshed successfully with no errors within the batch at all.

Suri