The data that the exception manager monitors can at times be very sensitive and unfit to be sent in an email. In those cases the user can hide it through the column formatting.
exMon offers the option to hide the data in emails and/or on the portal. Therefore you can hide sensitive columns only in the email, and work on the exceptions that are raised in the portal.
A password column which has been hidden in emails
For sensitive data, it may be advisable to read about Clearing old exceptions